---
_id: '15002'
abstract:
- lang: eng
text: "The lattice Schwinger model, the discrete version of QED in \r\n1\r\n+\r\n1\r\n
dimensions, is a well-studied test bench for lattice gauge theories. Here, we
study the fractal properties of this model. We reveal the self-similarity of the
ground state, which allows us to develop a recurrent procedure for finding the
ground-state wave functions and predicting ground-state energies. We present the
results of recurrently calculating ground-state wave functions using the fractal
Ansatz and automized software package for fractal image processing. In certain
parameter regimes, just a few terms are enough for our recurrent procedure to
predict ground-state energies close to the exact ones for several hundreds of
sites. Our findings pave the way to understanding the complexity of calculating
many-body wave functions in terms of their fractal properties as well as finding
new links between condensed matter and high-energy lattice models."
acknowledgement: "We thank A. Bargov, I. Khaymovich, and V. Tiunova for fruitful discussions
and for useful comments. M. C. B. thanks S. Kühn for discussions about the phase
structure of the model. A. K. F. thanks V. Gritsev and A. Garkun for insightful
comments. E. V. P., E. S. T., and A. K. F. are\r\nsupported by the RSF Grant No.
20-42-05002 (studying the fractal Ansatz) and the Roadmap on Quantum Computing (Contract
No. 868-1.3-15/15-2021, October 5, 2021; calculating on GS energies). A. K. F. thanks
the Priority 2030 program at the NIST “MISIS” under the project No. K1-2022-027.
M. C. B. was partly funded by the Deutsche Forschungsgemeinschaft (DFG, German Research
Foundation) under Germany’s Excellence Strategy—EXC-2111–390814868."
article_number: '050401'
article_processing_charge: No
article_type: original
author:
- first_name: Elena
full_name: Petrova, Elena
id: 0ac84990-897b-11ed-a09c-f5abb56a4ede
last_name: Petrova
- first_name: Egor S.
full_name: Tiunov, Egor S.
last_name: Tiunov
- first_name: Mari Carmen
full_name: Bañuls, Mari Carmen
last_name: Bañuls
- first_name: Aleksey K.
full_name: Fedorov, Aleksey K.
last_name: Fedorov
citation:
ama: Petrova E, Tiunov ES, Bañuls MC, Fedorov AK. Fractal states of the Schwinger
model. Physical Review Letters. 2024;132(5). doi:10.1103/PhysRevLett.132.050401
apa: Petrova, E., Tiunov, E. S., Bañuls, M. C., & Fedorov, A. K. (2024). Fractal
states of the Schwinger model. Physical Review Letters. American Physical
Society. https://doi.org/10.1103/PhysRevLett.132.050401
chicago: Petrova, Elena, Egor S. Tiunov, Mari Carmen Bañuls, and Aleksey K. Fedorov.
“Fractal States of the Schwinger Model.” Physical Review Letters. American
Physical Society, 2024. https://doi.org/10.1103/PhysRevLett.132.050401.
ieee: E. Petrova, E. S. Tiunov, M. C. Bañuls, and A. K. Fedorov, “Fractal states
of the Schwinger model,” Physical Review Letters, vol. 132, no. 5. American
Physical Society, 2024.
ista: Petrova E, Tiunov ES, Bañuls MC, Fedorov AK. 2024. Fractal states of the Schwinger
model. Physical Review Letters. 132(5), 050401.
mla: Petrova, Elena, et al. “Fractal States of the Schwinger Model.” Physical
Review Letters, vol. 132, no. 5, 050401, American Physical Society, 2024,
doi:10.1103/PhysRevLett.132.050401.
short: E. Petrova, E.S. Tiunov, M.C. Bañuls, A.K. Fedorov, Physical Review Letters
132 (2024).
date_created: 2024-02-18T23:01:00Z
date_published: 2024-01-30T00:00:00Z
date_updated: 2024-02-26T08:03:31Z
day: '30'
department:
- _id: MaSe
doi: 10.1103/PhysRevLett.132.050401
external_id:
arxiv:
- '2201.10220'
intvolume: ' 132'
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2201.10220
month: '01'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fractal states of the Schwinger model
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 132
year: '2024'
...
---
_id: '15122'
abstract:
- lang: eng
text: Quantum computers are increasing in size and quality but are still very noisy.
Error mitigation extends the size of the quantum circuits that noisy devices can
meaningfully execute. However, state-of-the-art error mitigation methods are hard
to implement and the limited qubit connectivity in superconducting qubit devices
restricts most applications to the hardware's native topology. Here we show a
quantum approximate optimization algorithm (QAOA) on nonplanar random regular
graphs with up to 40 nodes enabled by a machine learning-based error mitigation.
We use a swap network with careful decision-variable-to-qubit mapping and a feed-forward
neural network to optimize a depth-two QAOA on up to 40 qubits. We observe a meaningful
parameter optimization for the largest graph which requires running quantum circuits
with 958 two-qubit gates. Our paper emphasizes the need to mitigate samples, and
not only expectation values, in quantum approximate optimization. These results
are a step towards executing quantum approximate optimization at a scale that
is not classically simulable. Reaching such system sizes is key to properly understanding
the true potential of heuristic algorithms like QAOA.
acknowledgement: S.H.S. acknowledges support from the IBM Ph.D. fellowship 2022 in
quantum computing. The authors also thank M. Serbyn, R. Kueng, R. A. Medina, and
S. Woerner for fruitful discussions.
article_number: '013223'
article_processing_charge: Yes
article_type: original
author:
- first_name: Stefan
full_name: Sack, Stefan
id: dd622248-f6e0-11ea-865d-ce382a1c81a5
last_name: Sack
orcid: 0000-0001-5400-8508
- first_name: Daniel J.
full_name: Egger, Daniel J.
last_name: Egger
citation:
ama: Sack S, Egger DJ. Large-scale quantum approximate optimization on nonplanar
graphs with machine learning noise mitigation. Physical Review Research.
2024;6(1). doi:10.1103/PhysRevResearch.6.013223
apa: Sack, S., & Egger, D. J. (2024). Large-scale quantum approximate optimization
on nonplanar graphs with machine learning noise mitigation. Physical Review
Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.6.013223
chicago: Sack, Stefan, and Daniel J. Egger. “Large-Scale Quantum Approximate Optimization
on Nonplanar Graphs with Machine Learning Noise Mitigation.” Physical Review
Research. American Physical Society, 2024. https://doi.org/10.1103/PhysRevResearch.6.013223.
ieee: S. Sack and D. J. Egger, “Large-scale quantum approximate optimization on
nonplanar graphs with machine learning noise mitigation,” Physical Review Research,
vol. 6, no. 1. American Physical Society, 2024.
ista: Sack S, Egger DJ. 2024. Large-scale quantum approximate optimization on nonplanar
graphs with machine learning noise mitigation. Physical Review Research. 6(1),
013223.
mla: Sack, Stefan, and Daniel J. Egger. “Large-Scale Quantum Approximate Optimization
on Nonplanar Graphs with Machine Learning Noise Mitigation.” Physical Review
Research, vol. 6, no. 1, 013223, American Physical Society, 2024, doi:10.1103/PhysRevResearch.6.013223.
short: S. Sack, D.J. Egger, Physical Review Research 6 (2024).
date_created: 2024-03-17T23:00:59Z
date_published: 2024-03-01T00:00:00Z
date_updated: 2024-03-19T07:24:03Z
day: '01'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/PhysRevResearch.6.013223
external_id:
arxiv:
- '2307.14427'
file:
- access_level: open_access
checksum: 274c9f1b15b3547a10a03f39e4ccc582
content_type: application/pdf
creator: dernst
date_created: 2024-03-19T07:16:38Z
date_updated: 2024-03-19T07:16:38Z
file_id: '15123'
file_name: 2024_PhysicalReviewResearch_Sack.pdf
file_size: 2777593
relation: main_file
success: 1
file_date_updated: 2024-03-19T07:16:38Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: bd660c93-d553-11ed-ba76-fb0fb6f49c0d
name: Quantum_Quantum Circuits and Software_Variational quantum algorithms on NISQ
devices
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Large-scale quantum approximate optimization on nonplanar graphs with machine
learning noise mitigation
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2024'
...
---
_id: '13277'
abstract:
- lang: eng
text: Recent experimental advances have inspired the development of theoretical
tools to describe the non-equilibrium dynamics of quantum systems. Among them
an exact representation of quantum spin systems in terms of classical stochastic
processes has been proposed. Here we provide first steps towards the extension
of this stochastic approach to bosonic systems by considering the one-dimensional
quantum quartic oscillator. We show how to exactly parameterize the time evolution
of this prototypical model via the dynamics of a set of classical variables. We
interpret these variables as stochastic processes, which allows us to propose
a novel way to numerically simulate the time evolution of the system. We benchmark
our findings by considering analytically solvable limits and providing alternative
derivations of known results.
acknowledgement: 'S. De Nicola acknowledges funding from the Institute of Science
and Technology Austria (ISTA), and from the European Union’s Horizon 2020 research
and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411.
S. De Nicola also acknowledges funding from the EPSRC Center for Doctoral Training
in Cross-Disciplinary Approaches to NonEquilibrium Systems (CANES) under Grant EP/L015854/1. '
article_number: '029'
article_processing_charge: No
article_type: original
author:
- first_name: Gennaro
full_name: Tucci, Gennaro
last_name: Tucci
- first_name: Stefano
full_name: De Nicola, Stefano
id: 42832B76-F248-11E8-B48F-1D18A9856A87
last_name: De Nicola
orcid: 0000-0002-4842-6671
- first_name: Sascha
full_name: Wald, Sascha
last_name: Wald
- first_name: Andrea
full_name: Gambassi, Andrea
last_name: Gambassi
citation:
ama: Tucci G, De Nicola S, Wald S, Gambassi A. Stochastic representation of the
quantum quartic oscillator. SciPost Physics Core. 2023;6(2). doi:10.21468/scipostphyscore.6.2.029
apa: Tucci, G., De Nicola, S., Wald, S., & Gambassi, A. (2023). Stochastic representation
of the quantum quartic oscillator. SciPost Physics Core. SciPost Foundation.
https://doi.org/10.21468/scipostphyscore.6.2.029
chicago: Tucci, Gennaro, Stefano De Nicola, Sascha Wald, and Andrea Gambassi. “Stochastic
Representation of the Quantum Quartic Oscillator.” SciPost Physics Core.
SciPost Foundation, 2023. https://doi.org/10.21468/scipostphyscore.6.2.029.
ieee: G. Tucci, S. De Nicola, S. Wald, and A. Gambassi, “Stochastic representation
of the quantum quartic oscillator,” SciPost Physics Core, vol. 6, no. 2.
SciPost Foundation, 2023.
ista: Tucci G, De Nicola S, Wald S, Gambassi A. 2023. Stochastic representation
of the quantum quartic oscillator. SciPost Physics Core. 6(2), 029.
mla: Tucci, Gennaro, et al. “Stochastic Representation of the Quantum Quartic Oscillator.”
SciPost Physics Core, vol. 6, no. 2, 029, SciPost Foundation, 2023, doi:10.21468/scipostphyscore.6.2.029.
short: G. Tucci, S. De Nicola, S. Wald, A. Gambassi, SciPost Physics Core 6 (2023).
date_created: 2023-07-24T10:47:46Z
date_published: 2023-04-14T00:00:00Z
date_updated: 2023-07-31T09:03:28Z
day: '14'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.21468/scipostphyscore.6.2.029
ec_funded: 1
external_id:
arxiv:
- '2211.01923'
file:
- access_level: open_access
checksum: b472bc82108747eda5d52adf9e2ac7f3
content_type: application/pdf
creator: dernst
date_created: 2023-07-31T09:02:27Z
date_updated: 2023-07-31T09:02:27Z
file_id: '13329'
file_name: 2023_SciPostPhysCore_Tucci.pdf
file_size: 523236
relation: main_file
success: 1
file_date_updated: 2023-07-31T09:02:27Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '2'
keyword:
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics
- and Optics
- Nuclear and High Energy Physics
- Condensed Matter Physics
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: SciPost Physics Core
publication_identifier:
issn:
- 2666-9366
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
status: public
title: Stochastic representation of the quantum quartic oscillator
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2023'
...
---
_id: '12790'
abstract:
- lang: eng
text: Motivated by the recent discoveries of superconductivity in bilayer and trilayer
graphene, we theoretically investigate superconductivity and other interaction-driven
phases in multilayer graphene stacks. To this end, we study the density of states
of multilayer graphene with up to four layers at the single-particle band structure
level in the presence of a transverse electric field. Among the considered structures,
tetralayer graphene with rhombohedral (ABCA) stacking reaches the highest density
of states. We study the phases that can arise in ABCA graphene by tuning the carrier
density and transverse electric field. For a broad region of the tuning parameters,
the presence of strong Coulomb repulsion leads to a spontaneous spin and valley
symmetry breaking via Stoner transitions. Using a model that incorporates the
spontaneous spin and valley polarization, we explore the Kohn-Luttinger mechanism
for superconductivity driven by repulsive Coulomb interactions. We find that the
strongest superconducting instability is in the p-wave channel, and occurs in
proximity to the onset of Stoner transitions. Interestingly, we find a range of
densities and transverse electric fields where superconductivity develops out
of a strongly corrugated, singly connected Fermi surface in each valley, leading
to a topologically nontrivial chiral p+ip superconducting state with an even number
of copropagating chiral Majorana edge modes. Our work establishes ABCA-stacked
tetralayer graphene as a promising platform for observing strongly correlated
physics and topological superconductivity.
acknowledgement: E.B. and T.H. were supported by the European Research Council (ERC)
under grant HQMAT (Grant Agreement No. 817799), by the Israel-USA Binational Science
Foundation (BSF), and by a Research grant from Irving and Cherna Moskowitz.
article_number: '104502'
article_processing_charge: No
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Tobias
full_name: Holder, Tobias
last_name: Holder
- first_name: Erez
full_name: Berg, Erez
last_name: Berg
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Ghazaryan A, Holder T, Berg E, Serbyn M. Multilayer graphenes as a platform
for interaction-driven physics and topological superconductivity. Physical
Review B. 2023;107(10). doi:10.1103/PhysRevB.107.104502
apa: Ghazaryan, A., Holder, T., Berg, E., & Serbyn, M. (2023). Multilayer graphenes
as a platform for interaction-driven physics and topological superconductivity.
Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.107.104502
chicago: Ghazaryan, Areg, Tobias Holder, Erez Berg, and Maksym Serbyn. “Multilayer
Graphenes as a Platform for Interaction-Driven Physics and Topological Superconductivity.”
Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.107.104502.
ieee: A. Ghazaryan, T. Holder, E. Berg, and M. Serbyn, “Multilayer graphenes as
a platform for interaction-driven physics and topological superconductivity,”
Physical Review B, vol. 107, no. 10. American Physical Society, 2023.
ista: Ghazaryan A, Holder T, Berg E, Serbyn M. 2023. Multilayer graphenes as a platform
for interaction-driven physics and topological superconductivity. Physical Review
B. 107(10), 104502.
mla: Ghazaryan, Areg, et al. “Multilayer Graphenes as a Platform for Interaction-Driven
Physics and Topological Superconductivity.” Physical Review B, vol. 107,
no. 10, 104502, American Physical Society, 2023, doi:10.1103/PhysRevB.107.104502.
short: A. Ghazaryan, T. Holder, E. Berg, M. Serbyn, Physical Review B 107 (2023).
date_created: 2023-04-02T22:01:10Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2023-08-01T13:59:29Z
day: '01'
department:
- _id: MaSe
- _id: MiLe
doi: 10.1103/PhysRevB.107.104502
external_id:
arxiv:
- '2211.02492'
isi:
- '000945526400003'
intvolume: ' 107'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2211.02492
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on the ISTA website
relation: press_release
url: https://ista.ac.at/en/news/reaching-superconductivity-layer-by-layer/
scopus_import: '1'
status: public
title: Multilayer graphenes as a platform for interaction-driven physics and topological
superconductivity
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '12839'
abstract:
- lang: eng
text: Universal nonequilibrium properties of isolated quantum systems are typically
probed by studying transport of conserved quantities, such as charge or spin,
while transport of energy has received considerably less attention. Here, we study
infinite-temperature energy transport in the kinetically constrained PXP model
describing Rydberg atom quantum simulators. Our state-of-the-art numerical simulations,
including exact diagonalization and time-evolving block decimation methods, reveal
the existence of two distinct transport regimes. At moderate times, the energy-energy
correlation function displays periodic oscillations due to families of eigenstates
forming different su(2) representations hidden within the spectrum. These families
of eigenstates generalize the quantum many-body scarred states found in previous
works and leave an imprint on the infinite-temperature energy transport. At later
times, we observe a long-lived superdiffusive transport regime that we attribute
to the proximity of a nearby integrable point. While generic strong deformations
of the PXP model indeed restore diffusive transport, adding a strong chemical
potential intriguingly gives rise to a well-converged superdiffusive exponent
z≈3/2. Our results suggest constrained models to be potential hosts of novel transport
regimes and call for developing an analytic understanding of their energy transport.
acknowledgement: "We would like to thank Alexios Michailidis, Sarang Gopalakrishnan,
and Achilleas Lazarides for useful comments. M. L. and M. S. acknowledge support
by the European Research Council under the European Union’s Horizon 2020 research
and innovation program (Grant\r\nAgreement No. 850899). J.-Y. D. and Z. P. acknowledge
support by EPSRC Grant No. EP/R513258/1 and the Leverhulme Trust Research Leadership
Grant No. RL2019-015. Statement of compliance with EPSRC policy framework on research
data: This publication is theoretical work that does not require supporting research
data. M. S., M. L., and Z. P. acknowledge support by the Erwin Schrödinger International
Institute for Mathematics and\r\nPhysics. M. L. and M. S. acknowledge PRACE for
awarding us access to Joliot-Curie at GENCI@CEA, France, where the TEBD simulations
were performed. The TEBD\r\nsimulations were performed using the ITENSOR library
[54]."
article_number: '011033'
article_processing_charge: No
article_type: original
author:
- first_name: Marko
full_name: Ljubotina, Marko
id: F75EE9BE-5C90-11EA-905D-16643DDC885E
last_name: Ljubotina
- first_name: Jean Yves
full_name: Desaules, Jean Yves
last_name: Desaules
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
citation:
ama: Ljubotina M, Desaules JY, Serbyn M, Papić Z. Superdiffusive energy transport
in kinetically constrained models. Physical Review X. 2023;13(1). doi:10.1103/PhysRevX.13.011033
apa: Ljubotina, M., Desaules, J. Y., Serbyn, M., & Papić, Z. (2023). Superdiffusive
energy transport in kinetically constrained models. Physical Review X.
American Physical Society. https://doi.org/10.1103/PhysRevX.13.011033
chicago: Ljubotina, Marko, Jean Yves Desaules, Maksym Serbyn, and Zlatko Papić.
“Superdiffusive Energy Transport in Kinetically Constrained Models.” Physical
Review X. American Physical Society, 2023. https://doi.org/10.1103/PhysRevX.13.011033.
ieee: M. Ljubotina, J. Y. Desaules, M. Serbyn, and Z. Papić, “Superdiffusive energy
transport in kinetically constrained models,” Physical Review X, vol. 13,
no. 1. American Physical Society, 2023.
ista: Ljubotina M, Desaules JY, Serbyn M, Papić Z. 2023. Superdiffusive energy transport
in kinetically constrained models. Physical Review X. 13(1), 011033.
mla: Ljubotina, Marko, et al. “Superdiffusive Energy Transport in Kinetically Constrained
Models.” Physical Review X, vol. 13, no. 1, 011033, American Physical Society,
2023, doi:10.1103/PhysRevX.13.011033.
short: M. Ljubotina, J.Y. Desaules, M. Serbyn, Z. Papić, Physical Review X 13 (2023).
date_created: 2023-04-16T22:01:09Z
date_published: 2023-03-07T00:00:00Z
date_updated: 2023-08-01T14:11:28Z
day: '07'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/PhysRevX.13.011033
ec_funded: 1
external_id:
isi:
- '000957625700001'
file:
- access_level: open_access
checksum: ee060cea609af79bba7af74b1ce28078
content_type: application/pdf
creator: dernst
date_created: 2023-04-17T08:36:53Z
date_updated: 2023-04-17T08:36:53Z
file_id: '12845'
file_name: 2023_PhysReviewX_Ljubotina.pdf
file_size: 1958523
relation: main_file
success: 1
file_date_updated: 2023-04-17T08:36:53Z
has_accepted_license: '1'
intvolume: ' 13'
isi: 1
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review X
publication_identifier:
eissn:
- 2160-3308
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superdiffusive energy transport in kinetically constrained models
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 13
year: '2023'
...
---
_id: '13963'
abstract:
- lang: eng
text: The many-body localization (MBL) proximity effect is an intriguing phenomenon
where a thermal bath localizes due to the interaction with a disordered system.
The interplay of thermal and nonergodic behavior in these systems gives rise to
a rich phase diagram, whose exploration is an active field of research. In this
paper, we study a bosonic Hubbard model featuring two particle species representing
the bath and the disordered system. Using state-of-the-art numerical techniques,
we investigate the dynamics of the model in different regimes, based on which
we obtain a tentative phase diagram as a function of coupling strength and bath
size. When the bath is composed of a single particle, we observe clear signatures
of a transition from an MBL proximity effect to a delocalized phase. Increasing
the bath size, however, its thermalizing effect becomes stronger and eventually
the whole system delocalizes in the range of moderate interaction strengths studied.
In this regime, we characterize particle transport, revealing diffusive behavior
of the originally localized bosons.
acknowledgement: "We thank A. A. Michailidis and A. Mirlin for insightful discussions.
P.B., M.L., and M.S. acknowledge support by the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation program (Grant Agreement
No. 850899). D.A. was\r\nsupported by the European Research Council (ERC) under
the European Union’s Horizon 2020 research and innovation program (Grant Agreement
No. 864597) and by the Swiss National Science Foundation. P.B., M.L., and M.S. acknowledge
PRACE for awarding us access to Joliot-Curie at GENCI@CEA, France, where the TEBD
simulations were performed. The TEBD simulations were performed using the ITensor
library [60]."
article_number: '054201'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Marko
full_name: Ljubotina, Marko
id: F75EE9BE-5C90-11EA-905D-16643DDC885E
last_name: Ljubotina
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Brighi P, Ljubotina M, Abanin DA, Serbyn M. Many-body localization proximity
effect in a two-species bosonic Hubbard model. Physical Review B. 2023;108(5).
doi:10.1103/physrevb.108.054201
apa: Brighi, P., Ljubotina, M., Abanin, D. A., & Serbyn, M. (2023). Many-body
localization proximity effect in a two-species bosonic Hubbard model. Physical
Review B. American Physical Society. https://doi.org/10.1103/physrevb.108.054201
chicago: Brighi, Pietro, Marko Ljubotina, Dmitry A. Abanin, and Maksym Serbyn. “Many-Body
Localization Proximity Effect in a Two-Species Bosonic Hubbard Model.” Physical
Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.108.054201.
ieee: P. Brighi, M. Ljubotina, D. A. Abanin, and M. Serbyn, “Many-body localization
proximity effect in a two-species bosonic Hubbard model,” Physical Review B,
vol. 108, no. 5. American Physical Society, 2023.
ista: Brighi P, Ljubotina M, Abanin DA, Serbyn M. 2023. Many-body localization proximity
effect in a two-species bosonic Hubbard model. Physical Review B. 108(5), 054201.
mla: Brighi, Pietro, et al. “Many-Body Localization Proximity Effect in a Two-Species
Bosonic Hubbard Model.” Physical Review B, vol. 108, no. 5, 054201, American
Physical Society, 2023, doi:10.1103/physrevb.108.054201.
short: P. Brighi, M. Ljubotina, D.A. Abanin, M. Serbyn, Physical Review B 108 (2023).
date_created: 2023-08-05T18:25:22Z
date_published: 2023-08-01T00:00:00Z
date_updated: 2023-08-07T09:51:39Z
day: '01'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physrevb.108.054201
ec_funded: 1
external_id:
arxiv:
- '2303.16876'
file:
- access_level: open_access
checksum: f763000339b5fd543c14377109920690
content_type: application/pdf
creator: dernst
date_created: 2023-08-07T09:48:08Z
date_updated: 2023-08-07T09:48:08Z
file_id: '13981'
file_name: 2023_PhysRevB_Brighi.pdf
file_size: 3051398
relation: main_file
success: 1
file_date_updated: 2023-08-07T09:48:08Z
has_accepted_license: '1'
intvolume: ' 108'
issue: '5'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Many-body localization proximity effect in a two-species bosonic Hubbard model
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '14320'
abstract:
- lang: eng
text: The development of two-dimensional materials has resulted in a diverse range
of novel, high-quality compounds with increasing complexity. A key requirement
for a comprehensive quantitative theory is the accurate determination of these
materials' band structure parameters. However, this task is challenging due to
the intricate band structures and the indirect nature of experimental probes.
In this work, we introduce a general framework to derive band structure parameters
from experimental data using deep neural networks. We applied our method to the
penetration field capacitance measurement of trilayer graphene, an effective probe
of its density of states. First, we demonstrate that a trained deep network gives
accurate predictions for the penetration field capacitance as a function of tight-binding
parameters. Next, we use the fast and accurate predictions from the trained network
to automatically determine tight-binding parameters directly from experimental
data, with extracted parameters being in a good agreement with values in the literature.
We conclude by discussing potential applications of our method to other materials
and experimental techniques beyond penetration field capacitance.
acknowledgement: A.F.Y. acknowledges primary support from the Department of Energy
under award DE-SC0020043, and additional support from the Gordon and Betty Moore
Foundation under award GBMF9471 for group operations.
article_number: '125411'
article_processing_charge: No
article_type: original
author:
- first_name: Paul M
full_name: Henderson, Paul M
id: 13C09E74-18D9-11E9-8878-32CFE5697425
last_name: Henderson
orcid: 0000-0002-5198-7445
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Alexander A.
full_name: Zibrov, Alexander A.
last_name: Zibrov
- first_name: Andrea F.
full_name: Young, Andrea F.
last_name: Young
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: 'Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. Deep learning extraction
of band structure parameters from density of states: A case study on trilayer
graphene. Physical Review B. 2023;108(12). doi:10.1103/physrevb.108.125411'
apa: 'Henderson, P. M., Ghazaryan, A., Zibrov, A. A., Young, A. F., & Serbyn,
M. (2023). Deep learning extraction of band structure parameters from density
of states: A case study on trilayer graphene. Physical Review B. American
Physical Society. https://doi.org/10.1103/physrevb.108.125411'
chicago: 'Henderson, Paul M, Areg Ghazaryan, Alexander A. Zibrov, Andrea F. Young,
and Maksym Serbyn. “Deep Learning Extraction of Band Structure Parameters from
Density of States: A Case Study on Trilayer Graphene.” Physical Review B.
American Physical Society, 2023. https://doi.org/10.1103/physrevb.108.125411.'
ieee: 'P. M. Henderson, A. Ghazaryan, A. A. Zibrov, A. F. Young, and M. Serbyn,
“Deep learning extraction of band structure parameters from density of states:
A case study on trilayer graphene,” Physical Review B, vol. 108, no. 12.
American Physical Society, 2023.'
ista: 'Henderson PM, Ghazaryan A, Zibrov AA, Young AF, Serbyn M. 2023. Deep learning
extraction of band structure parameters from density of states: A case study on
trilayer graphene. Physical Review B. 108(12), 125411.'
mla: 'Henderson, Paul M., et al. “Deep Learning Extraction of Band Structure Parameters
from Density of States: A Case Study on Trilayer Graphene.” Physical Review
B, vol. 108, no. 12, 125411, American Physical Society, 2023, doi:10.1103/physrevb.108.125411.'
short: P.M. Henderson, A. Ghazaryan, A.A. Zibrov, A.F. Young, M. Serbyn, Physical
Review B 108 (2023).
date_created: 2023-09-12T07:12:12Z
date_published: 2023-09-15T00:00:00Z
date_updated: 2023-09-20T09:38:24Z
day: '15'
department:
- _id: MaSe
- _id: ChLa
- _id: MiLe
doi: 10.1103/physrevb.108.125411
external_id:
arxiv:
- '2210.06310'
intvolume: ' 108'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2210.06310
month: '09'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Deep learning extraction of band structure parameters from density of states:
A case study on trilayer graphene'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '12732'
abstract:
- lang: eng
text: "Nonergodic systems, whose out-of-equilibrium dynamics fail to thermalize,
provide a fascinating research direction both for fundamental reasons and for
application in state of the art quantum devices.\r\nGoing beyond the description
of statistical mechanics, ergodicity breaking yields a new paradigm in quantum
many-body physics, introducing novel phases of matter with no counterpart at equilibrium.\r\nIn
this Thesis, we address different open questions in the field, focusing on disorder-induced
many-body localization (MBL) and on weak ergodicity breaking in kinetically constrained
models.\r\nIn particular, we contribute to the debate about transport in kinetically
constrained models, studying the effect of $U(1)$ conservation and inversion-symmetry
breaking in a family of quantum East models.\r\nUsing tensor network techniques,
we analyze the dynamics of large MBL systems beyond the limit of exact numerical
methods.\r\nIn this setting, we approach the debated topic of the coexistence
of localized and thermal eigenstates separated by energy thresholds known as many-body
mobility edges.\r\nInspired by recent experiments, our work further investigates
the localization of a small bath induced by the coupling to a large localized
chain, the so-called MBL proximity effect.\r\n\r\nIn the first Chapter, we introduce
a family of particle-conserving kinetically constrained models, inspired by the
quantum East model.\r\nThe system we study features strong inversion-symmetry
breaking, due to the nature of the correlated hopping.\r\nWe show that these models
host so-called quantum Hilbert space fragmentation, consisting of disconnected
subsectors in an entangled basis, and further provide an analytical description
of this phenomenon.\r\nWe further probe its effect on dynamics of simple product
states, showing revivals in fidelity and local observalbes.\r\nThe study of dynamics
within the largest subsector reveals an anomalous transient superdiffusive behavior
crossing over to slow logarithmic dynamics at later times.\r\nThis work suggests
that particle conserving constrained models with inversion-symmetry breaking realize
new universality classes of dynamics and invite their further theoretical and
experimental studies.\r\n\r\nNext, we use kinetic constraints and disorder to
design a model with many-body mobility edges in particle density.\r\nThis feature
allows to study the dynamics of localized and thermal states in large systems
beyond the limitations of previous studies.\r\nThe time-evolution shows typical
signatures of localization at small densities, replaced by thermal behavior at
larger densities.\r\nOur results provide evidence in favor of the stability of
many-body mobility edges, which was recently challenged by a theoretical argument.\r\nTo
support our findings, we probe the mechanism proposed as a cause of delocalization
in many-body localized systems with mobility edges suggesting its ineffectiveness
in the model studied.\r\n\r\nIn the last Chapter of this Thesis, we address the
topic of many-body localization proximity effect.\r\nWe study a model inspired
by recent experiments, featuring Anderson localized coupled to a small bath of
free hard-core bosons.\r\nThe interaction among the two particle species results
in non-trivial dynamics, which we probe using tensor network techniques.\r\nOur
simulations show convincing evidence of many-body localization proximity effect
when the bath is composed by a single free particle and interactions are strong.\r\nWe
furthter observe an anomalous entanglement dynamics, which we explain through
a phenomenological theory.\r\nFinally, we extract highly excited eigenstates of
large systems, providing supplementary evidence in favor of our findings."
acknowledged_ssus:
- _id: ScienComp
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
citation:
ama: Brighi P. Ergodicity breaking in disordered and kinetically constrained quantum
many-body systems. 2023. doi:10.15479/at:ista:12732
apa: Brighi, P. (2023). Ergodicity breaking in disordered and kinetically constrained
quantum many-body systems. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:12732
chicago: Brighi, Pietro. “Ergodicity Breaking in Disordered and Kinetically Constrained
Quantum Many-Body Systems.” Institute of Science and Technology Austria, 2023.
https://doi.org/10.15479/at:ista:12732.
ieee: P. Brighi, “Ergodicity breaking in disordered and kinetically constrained
quantum many-body systems,” Institute of Science and Technology Austria, 2023.
ista: Brighi P. 2023. Ergodicity breaking in disordered and kinetically constrained
quantum many-body systems. Institute of Science and Technology Austria.
mla: Brighi, Pietro. Ergodicity Breaking in Disordered and Kinetically Constrained
Quantum Many-Body Systems. Institute of Science and Technology Austria, 2023,
doi:10.15479/at:ista:12732.
short: P. Brighi, Ergodicity Breaking in Disordered and Kinetically Constrained
Quantum Many-Body Systems, Institute of Science and Technology Austria, 2023.
date_created: 2023-03-17T13:30:48Z
date_published: 2023-03-21T00:00:00Z
date_updated: 2023-09-20T10:44:12Z
day: '21'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MaSe
doi: 10.15479/at:ista:12732
ec_funded: 1
file:
- access_level: closed
checksum: 5d2de651ef9449c1b8dc27148ca74777
content_type: application/zip
creator: pbrighi
date_created: 2023-03-23T16:42:56Z
date_updated: 2023-03-23T16:42:56Z
file_id: '12753'
file_name: Thesis_sub_PBrighi.zip
file_size: 42167561
relation: source_file
- access_level: open_access
checksum: 7caa153d4a5b0873a79358787d2dfe1e
content_type: application/pdf
creator: pbrighi
date_created: 2023-03-23T16:43:14Z
date_updated: 2023-03-23T16:43:14Z
file_id: '12754'
file_name: Thesis_PBrighi.pdf
file_size: 13977000
relation: main_file
success: 1
file_date_updated: 2023-03-23T16:43:14Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '03'
oa: 1
oa_version: None
page: '158'
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '11470'
relation: part_of_dissertation
status: public
- id: '8308'
relation: part_of_dissertation
status: public
- id: '11469'
relation: part_of_dissertation
status: public
- id: '12750'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
title: Ergodicity breaking in disordered and kinetically constrained quantum many-body
systems
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '14334'
abstract:
- lang: eng
text: Quantum kinetically constrained models have recently attracted significant
attention due to their anomalous dynamics and thermalization. In this work, we
introduce a hitherto unexplored family of kinetically constrained models featuring
conserved particle number and strong inversion-symmetry breaking due to facilitated
hopping. We demonstrate that these models provide a generic example of so-called
quantum Hilbert space fragmentation, that is manifested in disconnected sectors
in the Hilbert space that are not apparent in the computational basis. Quantum
Hilbert space fragmentation leads to an exponential in system size number of eigenstates
with exactly zero entanglement entropy across several bipartite cuts. These eigenstates
can be probed dynamically using quenches from simple initial product states. In
addition, we study the particle spreading under unitary dynamics launched from
the domain wall state, and find faster than diffusive dynamics at high particle
densities, that crosses over into logarithmically slow relaxation at smaller densities.
Using a classically simulable cellular automaton, we reproduce the logarithmic
dynamics observed in the quantum case. Our work suggests that particle conserving
constrained models with inversion symmetry breaking realize so far unexplored
dynamical behavior and invite their further theoretical and experimental studies.
acknowledgement: "We would like to thank Raimel A. Medina, Hansveer Singh, and Dmitry
Abanin for useful\r\ndiscussions.The authors acknowledge support by the European
Research Council\r\n(ERC) under the European Union’s Horizon 2020 research and innovation
program (Grant\r\nAgreement No. 850899). We acknowledge support by the Erwin Schrödinger
International\r\nInstitute for Mathematics and Physics (ESI)."
article_number: '093'
article_processing_charge: No
article_type: original
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Marko
full_name: Ljubotina, Marko
id: F75EE9BE-5C90-11EA-905D-16643DDC885E
last_name: Ljubotina
orcid: 0000-0003-0038-7068
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics
in particle-conserving quantum East models. SciPost Physics. 2023;15(3).
doi:10.21468/scipostphys.15.3.093
apa: Brighi, P., Ljubotina, M., & Serbyn, M. (2023). Hilbert space fragmentation
and slow dynamics in particle-conserving quantum East models. SciPost Physics.
SciPost Foundation. https://doi.org/10.21468/scipostphys.15.3.093
chicago: Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Hilbert Space Fragmentation
and Slow Dynamics in Particle-Conserving Quantum East Models.” SciPost Physics.
SciPost Foundation, 2023. https://doi.org/10.21468/scipostphys.15.3.093.
ieee: P. Brighi, M. Ljubotina, and M. Serbyn, “Hilbert space fragmentation and slow
dynamics in particle-conserving quantum East models,” SciPost Physics,
vol. 15, no. 3. SciPost Foundation, 2023.
ista: Brighi P, Ljubotina M, Serbyn M. 2023. Hilbert space fragmentation and slow
dynamics in particle-conserving quantum East models. SciPost Physics. 15(3), 093.
mla: Brighi, Pietro, et al. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving
Quantum East Models.” SciPost Physics, vol. 15, no. 3, 093, SciPost Foundation,
2023, doi:10.21468/scipostphys.15.3.093.
short: P. Brighi, M. Ljubotina, M. Serbyn, SciPost Physics 15 (2023).
date_created: 2023-09-14T13:08:23Z
date_published: 2023-09-13T00:00:00Z
date_updated: 2023-09-20T10:46:29Z
day: '13'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.21468/scipostphys.15.3.093
ec_funded: 1
external_id:
arxiv:
- '2210.15607'
file:
- access_level: open_access
checksum: 4cef6a8021f6b6c47ab2f2f2b1387ac2
content_type: application/pdf
creator: dernst
date_created: 2023-09-20T10:46:10Z
date_updated: 2023-09-20T10:46:10Z
file_id: '14350'
file_name: 2023_SciPostPhysics_Brighi.pdf
file_size: 4866506
relation: main_file
success: 1
file_date_updated: 2023-09-20T10:46:10Z
has_accepted_license: '1'
intvolume: ' 15'
issue: '3'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: SciPost Physics
publication_identifier:
issn:
- 2542-4653
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
related_material:
record:
- id: '12750'
relation: earlier_version
status: public
status: public
title: Hilbert space fragmentation and slow dynamics in particle-conserving quantum
East models
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2023'
...
---
_id: '14406'
abstract:
- lang: eng
text: "Recently, a concept of generalized multifractality, which characterizes fluctuations
and correlations of critical eigenstates, was introduced and explored for all
10 symmetry classes of disordered systems. Here, by using the nonlinear sigma-model
(\r\nNL\r\nσ\r\nM\r\n) field theory, we extend the theory of generalized multifractality
to boundaries of systems at criticality. Our numerical simulations on two-dimensional
systems of symmetry classes A, C, and AII fully confirm the analytical predictions
of pure-scaling observables and Weyl symmetry relations between critical exponents
of surface generalized multifractality. This demonstrates the validity of the
\r\nNL\r\nσ\r\nM\r\n for the description of Anderson-localization critical phenomena,
not only in the bulk but also on the boundary. The critical exponents strongly
violate generalized parabolicity, in analogy with earlier results for the bulk,
corroborating the conclusion that the considered Anderson-localization critical
points are not described by conformal field theories. We further derive relations
between generalized surface multifractal spectra and linear combinations of Lyapunov
exponents of a strip in quasi-one-dimensional geometry, which hold under the assumption
of invariance with respect to a logarithmic conformal map. Our numerics demonstrate
that these relations hold with an excellent accuracy. Taken together, our results
indicate an intriguing situation: the conformal invariance is broken but holds
partially at critical points of Anderson localization."
acknowledgement: "We thank Ilya Gruzberg for many illuminating discussions. S.S.B.,
J.F.K., and A.D.M. acknowledge support by the Deutsche Forschungsgemeinschaft (DFG)
via the Grant\r\nNo. MI 658/14-1. I.S.B. acknowledges support from Russian Science
Foundation (Grant No. 22-42-04416)."
article_number: '104205'
article_processing_charge: No
article_type: original
author:
- first_name: Serafim
full_name: Babkin, Serafim
id: 41e64307-6672-11ee-b9ad-cc7a0075a479
last_name: Babkin
orcid: 0009-0003-7382-8036
- first_name: Jonas F.
full_name: Karcher, Jonas F.
last_name: Karcher
- first_name: Igor S.
full_name: Burmistrov, Igor S.
last_name: Burmistrov
- first_name: Alexander D.
full_name: Mirlin, Alexander D.
last_name: Mirlin
citation:
ama: Babkin S, Karcher JF, Burmistrov IS, Mirlin AD. Generalized surface multifractality
in two-dimensional disordered systems. Physical Review B. 2023;108(10).
doi:10.1103/PhysRevB.108.104205
apa: Babkin, S., Karcher, J. F., Burmistrov, I. S., & Mirlin, A. D. (2023).
Generalized surface multifractality in two-dimensional disordered systems. Physical
Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.108.104205
chicago: Babkin, Serafim, Jonas F. Karcher, Igor S. Burmistrov, and Alexander D.
Mirlin. “Generalized Surface Multifractality in Two-Dimensional Disordered Systems.”
Physical Review B. American Physical Society, 2023. https://doi.org/10.1103/PhysRevB.108.104205.
ieee: S. Babkin, J. F. Karcher, I. S. Burmistrov, and A. D. Mirlin, “Generalized
surface multifractality in two-dimensional disordered systems,” Physical Review
B, vol. 108, no. 10. American Physical Society, 2023.
ista: Babkin S, Karcher JF, Burmistrov IS, Mirlin AD. 2023. Generalized surface
multifractality in two-dimensional disordered systems. Physical Review B. 108(10),
104205.
mla: Babkin, Serafim, et al. “Generalized Surface Multifractality in Two-Dimensional
Disordered Systems.” Physical Review B, vol. 108, no. 10, 104205, American
Physical Society, 2023, doi:10.1103/PhysRevB.108.104205.
short: S. Babkin, J.F. Karcher, I.S. Burmistrov, A.D. Mirlin, Physical Review B
108 (2023).
date_created: 2023-10-08T22:01:17Z
date_published: 2023-09-01T00:00:00Z
date_updated: 2023-10-09T07:09:30Z
day: '01'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.108.104205
external_id:
arxiv:
- '2306.09455'
intvolume: ' 108'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2306.09455
month: '09'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Generalized surface multifractality in two-dimensional disordered systems
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '13125'
abstract:
- lang: eng
text: 'The quantum approximate optimization algorithm (QAOA) is a variational quantum
algorithm, where a quantum computer implements a variational ansatz consisting
of p layers of alternating unitary operators and a classical computer is used
to optimize the variational parameters. For a random initialization, the optimization
typically leads to local minima with poor performance, motivating the search for
initialization strategies of QAOA variational parameters. Although numerous heuristic
initializations exist, an analytical understanding and performance guarantees
for large p remain evasive.We introduce a greedy initialization of QAOA which
guarantees improving performance with an increasing number of layers. Our main
result is an analytic construction of 2p + 1 transition states—saddle points with
a unique negative curvature direction—for QAOA with p + 1 layers that use the
local minimum of QAOA with p layers. Transition states connect to new local minima,
which are guaranteed to lower the energy compared to the minimum found for p layers.
We use the GREEDY procedure to navigate the exponentially increasing with p number
of local minima resulting from the recursive application of our analytic construction.
The performance of the GREEDY procedure matches available initialization strategies
while providing a guarantee for the minimal energy to decrease with an increasing
number of layers p. '
acknowledgement: 'We thank V. Verteletskyi for a joint collaboration on numerical
studies of the QAOA during his internship at ISTA that inspired analytic results
on TS reported in this work. We acknowledge A. A. Mele and M. Brooks for discussions
and D. Egger, P. Love, and D. Wierichs for valuable feedback on the manuscript.
S.H.S., R.A.M., and M.S. acknowledge support by the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation program (Grant Agreement
No. 850899). R.K. is supported by the SFB BeyondC (Grant No. F7107-N38) and the
project QuantumReady (FFG 896217). '
article_number: '062404'
article_processing_charge: No
article_type: original
author:
- first_name: Stefan
full_name: Sack, Stefan
id: dd622248-f6e0-11ea-865d-ce382a1c81a5
last_name: Sack
orcid: 0000-0001-5400-8508
- first_name: Raimel A
full_name: Medina Ramos, Raimel A
id: CE680B90-D85A-11E9-B684-C920E6697425
last_name: Medina Ramos
orcid: 0000-0002-5383-2869
- first_name: Richard
full_name: Kueng, Richard
last_name: Kueng
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Sack S, Medina Ramos RA, Kueng R, Serbyn M. Recursive greedy initialization
of the quantum approximate optimization algorithm with guaranteed improvement.
Physical Review A. 2023;107(6). doi:10.1103/physreva.107.062404
apa: Sack, S., Medina Ramos, R. A., Kueng, R., & Serbyn, M. (2023). Recursive
greedy initialization of the quantum approximate optimization algorithm with guaranteed
improvement. Physical Review A. American Physical Society. https://doi.org/10.1103/physreva.107.062404
chicago: Sack, Stefan, Raimel A Medina Ramos, Richard Kueng, and Maksym Serbyn.
“Recursive Greedy Initialization of the Quantum Approximate Optimization Algorithm
with Guaranteed Improvement.” Physical Review A. American Physical Society,
2023. https://doi.org/10.1103/physreva.107.062404.
ieee: S. Sack, R. A. Medina Ramos, R. Kueng, and M. Serbyn, “Recursive greedy initialization
of the quantum approximate optimization algorithm with guaranteed improvement,”
Physical Review A, vol. 107, no. 6. American Physical Society, 2023.
ista: Sack S, Medina Ramos RA, Kueng R, Serbyn M. 2023. Recursive greedy initialization
of the quantum approximate optimization algorithm with guaranteed improvement.
Physical Review A. 107(6), 062404.
mla: Sack, Stefan, et al. “Recursive Greedy Initialization of the Quantum Approximate
Optimization Algorithm with Guaranteed Improvement.” Physical Review A,
vol. 107, no. 6, 062404, American Physical Society, 2023, doi:10.1103/physreva.107.062404.
short: S. Sack, R.A. Medina Ramos, R. Kueng, M. Serbyn, Physical Review A 107 (2023).
date_created: 2023-06-07T06:57:32Z
date_published: 2023-06-02T00:00:00Z
date_updated: 2023-12-13T14:47:25Z
day: '02'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physreva.107.062404
ec_funded: 1
external_id:
arxiv:
- '2209.01159'
isi:
- '001016927100012'
file:
- access_level: open_access
checksum: 0d71423888eeccaa60d8f41197f26306
content_type: application/pdf
creator: dernst
date_created: 2023-06-13T07:28:36Z
date_updated: 2023-06-13T07:28:36Z
file_id: '13131'
file_name: 2023_PhysRevA_Sack.pdf
file_size: 2524611
relation: main_file
success: 1
file_date_updated: 2023-06-13T07:28:36Z
has_accepted_license: '1'
intvolume: ' 107'
isi: 1
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '14622'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Recursive greedy initialization of the quantum approximate optimization algorithm
with guaranteed improvement
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '14622'
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Stefan
full_name: Sack, Stefan
id: dd622248-f6e0-11ea-865d-ce382a1c81a5
last_name: Sack
orcid: 0000-0001-5400-8508
citation:
ama: 'Sack S. Improving variational quantum algorithms: Innovative initialization
techniques and extensions to qudit systems. 2023. doi:10.15479/at:ista:14622'
apa: 'Sack, S. (2023). Improving variational quantum algorithms: Innovative initialization
techniques and extensions to qudit systems. Institute of Science and Technology
Austria. https://doi.org/10.15479/at:ista:14622'
chicago: 'Sack, Stefan. “Improving Variational Quantum Algorithms: Innovative Initialization
Techniques and Extensions to Qudit Systems.” Institute of Science and Technology
Austria, 2023. https://doi.org/10.15479/at:ista:14622.'
ieee: 'S. Sack, “Improving variational quantum algorithms: Innovative initialization
techniques and extensions to qudit systems,” Institute of Science and Technology
Austria, 2023.'
ista: 'Sack S. 2023. Improving variational quantum algorithms: Innovative initialization
techniques and extensions to qudit systems. Institute of Science and Technology
Austria.'
mla: 'Sack, Stefan. Improving Variational Quantum Algorithms: Innovative Initialization
Techniques and Extensions to Qudit Systems. Institute of Science and Technology
Austria, 2023, doi:10.15479/at:ista:14622.'
short: 'S. Sack, Improving Variational Quantum Algorithms: Innovative Initialization
Techniques and Extensions to Qudit Systems, Institute of Science and Technology
Austria, 2023.'
date_created: 2023-11-28T10:58:13Z
date_published: 2023-11-30T00:00:00Z
date_updated: 2023-12-13T14:47:25Z
day: '30'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MaSe
doi: 10.15479/at:ista:14622
ec_funded: 1
file:
- access_level: closed
checksum: 068fd3570506ec42b2faa390de784bc4
content_type: application/pdf
creator: ssack
date_created: 2023-11-30T15:53:10Z
date_updated: 2023-12-01T11:10:46Z
embargo: 2024-11-30
embargo_to: open_access
file_id: '14635'
file_name: PhD_Thesis.pdf
file_size: 11947523
relation: main_file
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checksum: 0fa3bc0d108aed0ac59d2c6beef2220a
content_type: application/zip
creator: ssack
date_created: 2023-11-30T15:54:11Z
date_updated: 2023-12-01T11:10:46Z
file_id: '14636'
file_name: PhD Thesis (1).zip
file_size: 18422964
relation: source_file
file_date_updated: 2023-12-01T11:10:46Z
has_accepted_license: '1'
language:
- iso: eng
month: '11'
oa_version: Published Version
page: '142'
project:
- _id: bd660c93-d553-11ed-ba76-fb0fb6f49c0d
name: Quantum_Quantum Circuits and Software_Variational quantum algorithms on NISQ
devices
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication_identifier:
issn:
- 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '11471'
relation: part_of_dissertation
status: public
- id: '13125'
relation: part_of_dissertation
status: public
- id: '9760'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
title: 'Improving variational quantum algorithms: Innovative initialization techniques
and extensions to qudit systems'
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '14690'
abstract:
- lang: eng
text: Generalized multifractality characterizes system size dependence of pure scaling
local observables at Anderson transitions in all 10 symmetry classes of disordered
systems. Recently, the concept of generalized multifractality has been extended
to boundaries of critical disordered noninteracting systems. Here we study the
generalized boundary multifractality in the presence of electron-electron interaction,
focusing on the spin quantum Hall symmetry class (class C). Employing the two-loop
renormalization group analysis within the Finkel'stein nonlinear sigma model,
we compute the anomalous dimensions of the pure scaling operators located at the
boundary of the system. We find that generalized boundary multifractal exponents
are twice larger than their bulk counterparts. Exact symmetry relations between
generalized boundary multifractal exponents in the case of noninteracting systems
are explicitly broken by the interaction.
acknowledgement: The authors are grateful to J. Karcher and A. Mirlin for collaboration
on the related project. We thank I. Gruzberg and A. Mirlin for useful discussions
and comments. I.S.B. is grateful to M. Parfenov and P. Ostrovsky for collaboration
on the related project. The research was supported by Russian Science Foundation
(Grant No. 22-42-04416).
article_number: '205429'
article_processing_charge: No
article_type: original
author:
- first_name: Serafim
full_name: Babkin, Serafim
id: 41e64307-6672-11ee-b9ad-cc7a0075a479
last_name: Babkin
orcid: 0009-0003-7382-8036
- first_name: I
full_name: Burmistrov, I
last_name: Burmistrov
citation:
ama: Babkin S, Burmistrov I. Boundary multifractality in the spin quantum Hall symmetry
class with interaction. Physical Review B. 2023;108(20). doi:10.1103/PhysRevB.108.205429
apa: Babkin, S., & Burmistrov, I. (2023). Boundary multifractality in the spin
quantum Hall symmetry class with interaction. Physical Review B. American
Physical Society. https://doi.org/10.1103/PhysRevB.108.205429
chicago: Babkin, Serafim, and I Burmistrov. “Boundary Multifractality in the Spin
Quantum Hall Symmetry Class with Interaction.” Physical Review B. American
Physical Society, 2023. https://doi.org/10.1103/PhysRevB.108.205429.
ieee: S. Babkin and I. Burmistrov, “Boundary multifractality in the spin quantum
Hall symmetry class with interaction,” Physical Review B, vol. 108, no.
20. American Physical Society, 2023.
ista: Babkin S, Burmistrov I. 2023. Boundary multifractality in the spin quantum
Hall symmetry class with interaction. Physical Review B. 108(20), 205429.
mla: Babkin, Serafim, and I. Burmistrov. “Boundary Multifractality in the Spin Quantum
Hall Symmetry Class with Interaction.” Physical Review B, vol. 108, no.
20, 205429, American Physical Society, 2023, doi:10.1103/PhysRevB.108.205429.
short: S. Babkin, I. Burmistrov, Physical Review B 108 (2023).
date_created: 2023-12-17T23:00:53Z
date_published: 2023-11-15T00:00:00Z
date_updated: 2023-12-18T08:45:28Z
day: '15'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.108.205429
external_id:
arxiv:
- '2308.16852'
intvolume: ' 108'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2308.16852'
month: '11'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Boundary multifractality in the spin quantum Hall symmetry class with interaction
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '10769'
abstract:
- lang: eng
text: studiamos aspectos de Teoría Cuántica de Campos a densidad finita usando técnicas
y conceptos de información cuántica. Nos enfocamos en fermiones de Dirac masivos
con potencial químico en 1+1 dimensiones espacio-temporales. Usando la entropía
de entrelazamiento en un intervalo, construimos la función c entrópica que es
finita. Esta función c no es monótona, e incorpora el entrelazamiento de largo
alcance proveniente de la superficie de Fermi. Motivados por trabajos previos
de modelos en la red, calculamos numéricamente las entropías de Renyi y encontramos
oscilaciones de Friedel. Seguidamente, analizamos la información mutua como una
medida de correlación entre diferentes regiones. Usando una expansión de distancia
grande desarrollada por Cardy, argumentamos que la información mutua detecta las
correlaciones inducidas por la superficie de Fermi todavía al orden dominante
en la expansión. Finalmente, analizamos la entropía relativa y sus generalizaciones
de Renyi para distinguir estados con diferente carga. Encontramos que estados
en diferentes sectores de superselección dan origen a un comportamiento super-extensivo
en la entropía relativa.
acknowledgement: "Se agradece a Horacio Casini por distintas discusiones y comentarios
a lo largo del trabajo. LD cuenta con el apoyo de CNEA y UNCuyo, Inst. GT cuenta
con el apoyo de CONICET,\r\nANPCyT, CNEA, y UNCuyo, Inst. Balseiro. RM cuenta con
el apoyo de IST Austria. MS cuenta con el apoyode CONICET y UNCuyo, Inst. Balseiro.
También se agradece a la Asociación Argentina de Física por la posibilidad de presentar
este artículo en el marco de una Mención Especial por el Premio Luis Másperi 2020."
article_processing_charge: No
article_type: original
author:
- first_name: L.
full_name: Daguerre, L.
last_name: Daguerre
- first_name: G.
full_name: Torroba, G.
last_name: Torroba
- first_name: Raimel A
full_name: Medina Ramos, Raimel A
id: CE680B90-D85A-11E9-B684-C920E6697425
last_name: Medina Ramos
- first_name: M.
full_name: Solís, M.
last_name: Solís
citation:
ama: 'Daguerre L, Torroba G, Medina Ramos RA, Solís M. Non relativistic quantum
field theory: Dynamics and irreversibility. Anales de la Asociacion Fisica
Argentina. 2022;32(4):93-98. doi:10.31527/analesafa.2021.32.4.93'
apa: 'Daguerre, L., Torroba, G., Medina Ramos, R. A., & Solís, M. (2022). Non
relativistic quantum field theory: Dynamics and irreversibility. Anales de
la Asociacion Fisica Argentina. Asociación Física Argentina. https://doi.org/10.31527/analesafa.2021.32.4.93'
chicago: 'Daguerre, L., G. Torroba, Raimel A Medina Ramos, and M. Solís. “Non relativistic
quantum field theory: Dynamics and irreversibility.” Anales de la Asociacion
Fisica Argentina. Asociación Física Argentina, 2022. https://doi.org/10.31527/analesafa.2021.32.4.93.'
ieee: 'L. Daguerre, G. Torroba, R. A. Medina Ramos, and M. Solís, “Non relativistic
quantum field theory: Dynamics and irreversibility,” Anales de la Asociacion
Fisica Argentina, vol. 32, no. 4. Asociación Física Argentina, pp. 93–98,
2022.'
ista: 'Daguerre L, Torroba G, Medina Ramos RA, Solís M. 2022. Non relativistic quantum
field theory: Dynamics and irreversibility. Anales de la Asociacion Fisica Argentina.
32(4), 93–98.'
mla: 'Daguerre, L., et al. “Non relativistic quantum field theory: Dynamics and
irreversibility.” Anales de la Asociacion Fisica Argentina, vol. 32, no.
4, Asociación Física Argentina, 2022, pp. 93–98, doi:10.31527/analesafa.2021.32.4.93.'
short: L. Daguerre, G. Torroba, R.A. Medina Ramos, M. Solís, Anales de la Asociacion
Fisica Argentina 32 (2022) 93–98.
date_created: 2022-02-20T23:01:32Z
date_published: 2022-01-13T00:00:00Z
date_updated: 2022-02-21T09:36:01Z
day: '13'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.31527/analesafa.2021.32.4.93
file:
- access_level: open_access
checksum: ca66a3017205677c5b4d22b3bb74fb0b
content_type: application/pdf
creator: dernst
date_created: 2022-02-21T09:32:44Z
date_updated: 2022-02-21T09:32:44Z
file_id: '10782'
file_name: 2022_AnalesAFA_Daguerre.pdf
file_size: 4505751
relation: main_file
success: 1
file_date_updated: 2022-02-21T09:32:44Z
has_accepted_license: '1'
intvolume: ' 32'
issue: '4'
language:
- iso: spa
month: '01'
oa: 1
oa_version: Published Version
page: 93-98
publication: Anales de la Asociacion Fisica Argentina
publication_identifier:
eissn:
- '18501168'
publication_status: published
publisher: Asociación Física Argentina
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Non relativistic quantum field theory: Dynamics and irreversibility'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 32
year: '2022'
...
---
_id: '12111'
abstract:
- lang: eng
text: Quantum impurities exhibit fascinating many-body phenomena when the small
interacting impurity changes the physics of a large noninteracting environment.
The characterisation of such strongly correlated nonperturbative effects is particularly
challenging due to the infinite size of the environment, and the inability of
local correlators to capture the buildup of long-ranged entanglement in the system.
Here, we harness an entanglement-based observable—the purity of the impurity—as
a witness for the formation of strong correlations. We showcase the utility of
our scheme by exactly solving the open Kondo box model in the small box limit,
and thus describe all-electronic dot-cavity devices. Specifically, we conclusively
characterize the metal-to-insulator phase transition in the system and identify
how the (conducting) dot-lead Kondo singlet is quenched by an (insulating) intraimpurity
singlet formation. Furthermore, we propose an experimentally feasible tomography
protocol for the measurement of the purity, which motivates the observation of
impurity physics through their entanglement build up.
acknowledgement: We thank G. Blatter, T. Ihn, K. Ensslin, M. Goldstein, C. Carisch,
and J. del Pino for illuminating discussions and acknowledge financial support from
the Swiss National Science Foundation (SNSF) through Project No. 190078, and from
the Deutsche Forschungsgemeinschaft (DFG) - Project No. 449653034. Our numerical
implementations are based on the ITensors JULIA library [64].
article_number: '043177'
article_processing_charge: No
article_type: original
author:
- first_name: Lidia
full_name: Stocker, Lidia
last_name: Stocker
- first_name: Stefan
full_name: Sack, Stefan
id: dd622248-f6e0-11ea-865d-ce382a1c81a5
last_name: Sack
- first_name: Michael S.
full_name: Ferguson, Michael S.
last_name: Ferguson
- first_name: Oded
full_name: Zilberberg, Oded
last_name: Zilberberg
citation:
ama: Stocker L, Sack S, Ferguson MS, Zilberberg O. Entanglement-based observables
for quantum impurities. Physical Review Research. 2022;4(4). doi:10.1103/PhysRevResearch.4.043177
apa: Stocker, L., Sack, S., Ferguson, M. S., & Zilberberg, O. (2022). Entanglement-based
observables for quantum impurities. Physical Review Research. American
Physical Society. https://doi.org/10.1103/PhysRevResearch.4.043177
chicago: Stocker, Lidia, Stefan Sack, Michael S. Ferguson, and Oded Zilberberg.
“Entanglement-Based Observables for Quantum Impurities.” Physical Review Research.
American Physical Society, 2022. https://doi.org/10.1103/PhysRevResearch.4.043177.
ieee: L. Stocker, S. Sack, M. S. Ferguson, and O. Zilberberg, “Entanglement-based
observables for quantum impurities,” Physical Review Research, vol. 4,
no. 4. American Physical Society, 2022.
ista: Stocker L, Sack S, Ferguson MS, Zilberberg O. 2022. Entanglement-based observables
for quantum impurities. Physical Review Research. 4(4), 043177.
mla: Stocker, Lidia, et al. “Entanglement-Based Observables for Quantum Impurities.”
Physical Review Research, vol. 4, no. 4, 043177, American Physical Society,
2022, doi:10.1103/PhysRevResearch.4.043177.
short: L. Stocker, S. Sack, M.S. Ferguson, O. Zilberberg, Physical Review Research
4 (2022).
date_created: 2023-01-08T23:00:53Z
date_published: 2022-12-01T00:00:00Z
date_updated: 2023-02-13T09:08:28Z
day: '01'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/PhysRevResearch.4.043177
file:
- access_level: open_access
checksum: 556820cf6e4af77c8476e5b8f4114d1a
content_type: application/pdf
creator: dernst
date_created: 2023-01-20T12:03:31Z
date_updated: 2023-01-20T12:03:31Z
file_id: '12328'
file_name: 2022_PhysicalReviewResearch_Stocker.pdf
file_size: 2941167
relation: main_file
success: 1
file_date_updated: 2023-01-20T12:03:31Z
has_accepted_license: '1'
intvolume: ' 4'
issue: '4'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Entanglement-based observables for quantum impurities
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 4
year: '2022'
...
---
_id: '12276'
abstract:
- lang: eng
text: Ongoing development of quantum simulators allows for a progressively finer
degree of control of quantum many-body systems. This motivates the development
of efficient approaches to facilitate the control of such systems and enable the
preparation of nontrivial quantum states. Here we formulate an approach to control
quantum systems based on matrix product states (MPSs). We compare counterdiabatic
and leakage minimization approaches to the so-called local steering problem that
consists in finding the best value of the control parameters for generating a
unitary evolution of the specific MPS in a given direction. In order to benchmark
the different approaches, we apply them to the generalization of the PXP model
known to exhibit coherent quantum dynamics due to quantum many-body scars. We
find that the leakage-based approach generally outperforms the counterdiabatic
framework and use it to construct a Floquet model with quantum scars. We perform
the first steps towards global trajectory optimization and demonstrate entanglement
steering capabilities in the generalized PXP model. Finally, we apply our leakage
minimization approach to construct quantum scars in the periodically driven nonintegrable
Ising model.
acknowledgement: We thank A. A. Michailidis for insightful discussions. M.L. and M.S.
acknowledge support from the European Research Council (ERC) under the European
Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 850899).
D.A. is supported by the European Research Council (ERC) under the European Union’s
Horizon 2020 research and innovation programme (Grant Agreement No. 864597) and
by the Swiss National Science Foundation. The infinite TEBD simulations were performed
using the ITensor library [67].
article_number: '030343'
article_processing_charge: No
article_type: original
author:
- first_name: Marko
full_name: Ljubotina, Marko
id: F75EE9BE-5C90-11EA-905D-16643DDC885E
last_name: Ljubotina
- first_name: Barbara
full_name: Roos, Barbara
id: 5DA90512-D80F-11E9-8994-2E2EE6697425
last_name: Roos
orcid: 0000-0002-9071-5880
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Ljubotina M, Roos B, Abanin DA, Serbyn M. Optimal steering of matrix product
states and quantum many-body scars. PRX Quantum. 2022;3(3). doi:10.1103/prxquantum.3.030343
apa: Ljubotina, M., Roos, B., Abanin, D. A., & Serbyn, M. (2022). Optimal steering
of matrix product states and quantum many-body scars. PRX Quantum. American
Physical Society. https://doi.org/10.1103/prxquantum.3.030343
chicago: Ljubotina, Marko, Barbara Roos, Dmitry A. Abanin, and Maksym Serbyn. “Optimal
Steering of Matrix Product States and Quantum Many-Body Scars.” PRX Quantum.
American Physical Society, 2022. https://doi.org/10.1103/prxquantum.3.030343.
ieee: M. Ljubotina, B. Roos, D. A. Abanin, and M. Serbyn, “Optimal steering of matrix
product states and quantum many-body scars,” PRX Quantum, vol. 3, no. 3.
American Physical Society, 2022.
ista: Ljubotina M, Roos B, Abanin DA, Serbyn M. 2022. Optimal steering of matrix
product states and quantum many-body scars. PRX Quantum. 3(3), 030343.
mla: Ljubotina, Marko, et al. “Optimal Steering of Matrix Product States and Quantum
Many-Body Scars.” PRX Quantum, vol. 3, no. 3, 030343, American Physical
Society, 2022, doi:10.1103/prxquantum.3.030343.
short: M. Ljubotina, B. Roos, D.A. Abanin, M. Serbyn, PRX Quantum 3 (2022).
date_created: 2023-01-16T10:01:56Z
date_published: 2022-09-23T00:00:00Z
date_updated: 2023-01-30T11:05:23Z
day: '23'
ddc:
- '530'
department:
- _id: MaSe
- _id: RoSe
doi: 10.1103/prxquantum.3.030343
ec_funded: 1
external_id:
arxiv:
- '2204.02899'
file:
- access_level: open_access
checksum: ef8f0a1b5a019b3958009162de0fa4c3
content_type: application/pdf
creator: dernst
date_created: 2023-01-30T11:02:50Z
date_updated: 2023-01-30T11:02:50Z
file_id: '12457'
file_name: 2022_PRXQuantum_Ljubotina.pdf
file_size: 7661905
relation: main_file
success: 1
file_date_updated: 2023-01-30T11:02:50Z
has_accepted_license: '1'
intvolume: ' 3'
issue: '3'
keyword:
- General Medicine
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: PRX Quantum
publication_identifier:
eissn:
- 2691-3399
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Optimal steering of matrix product states and quantum many-body scars
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2022'
...
---
_id: '10863'
abstract:
- lang: eng
text: 'Nonlinear optical responses are commonly used as a probe for studying the
electronic properties of materials. For topological materials, studies thus far
focused on photogalvanic electric currents, which are forbidden in centrosymmetric
materials because they require broken inversion symmetry. In this Letter, we propose
a class of symmetry-allowed responses for inversion-symmetric topological insulators
with two doubly degenerate bands. We consider a specific example of such a response,
the orbital current, and show that the sign of the response reflects the Z2 topological
index, i.e., the orbital current changes sign at the transition between trivial
and topological insulator phases. This is illustrated in two models of topological
insulators: the Bernevig-Hughes-Zhang model and the 1T′ phase of transition metal
dichalcogenides.'
acknowledgement: "We are grateful to Takahiro Morimoto and Zhanybek Alpichshev for
fruitful discussions. MD was supported by Austrian Agency for International Cooperation
in Education and Research (OeAD-GmbH) and by the John Seo Fellowship at MIT. HI
was supported by JSPS KAKENHI Grant Numbers JP19K14649 and JP18H03676, and by UTokyo
Global Activity Support Program for\r\nYoung Researchers."
article_number: L121407
article_processing_charge: No
article_type: letter_note
author:
- first_name: Margarita
full_name: Davydova, Margarita
last_name: Davydova
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Hiroaki
full_name: Ishizuka, Hiroaki
last_name: Ishizuka
citation:
ama: Davydova M, Serbyn M, Ishizuka H. Symmetry-allowed nonlinear orbital response
across the topological phase transition in centrosymmetric materials. Physical
Review B. 2022;105. doi:10.1103/PhysRevB.105.L121407
apa: Davydova, M., Serbyn, M., & Ishizuka, H. (2022). Symmetry-allowed nonlinear
orbital response across the topological phase transition in centrosymmetric materials.
Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.105.L121407
chicago: Davydova, Margarita, Maksym Serbyn, and Hiroaki Ishizuka. “Symmetry-Allowed
Nonlinear Orbital Response across the Topological Phase Transition in Centrosymmetric
Materials.” Physical Review B. American Physical Society, 2022. https://doi.org/10.1103/PhysRevB.105.L121407.
ieee: M. Davydova, M. Serbyn, and H. Ishizuka, “Symmetry-allowed nonlinear orbital
response across the topological phase transition in centrosymmetric materials,”
Physical Review B, vol. 105. American Physical Society, 2022.
ista: Davydova M, Serbyn M, Ishizuka H. 2022. Symmetry-allowed nonlinear orbital
response across the topological phase transition in centrosymmetric materials.
Physical Review B. 105, L121407.
mla: Davydova, Margarita, et al. “Symmetry-Allowed Nonlinear Orbital Response across
the Topological Phase Transition in Centrosymmetric Materials.” Physical Review
B, vol. 105, L121407, American Physical Society, 2022, doi:10.1103/PhysRevB.105.L121407.
short: M. Davydova, M. Serbyn, H. Ishizuka, Physical Review B 105 (2022).
date_created: 2022-03-18T10:20:46Z
date_published: 2022-03-17T00:00:00Z
date_updated: 2023-08-03T06:09:56Z
day: '17'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.105.L121407
external_id:
arxiv:
- '2101.08277'
isi:
- '000800752500001'
intvolume: ' 105'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2101.08277
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
issn:
- 2469-9969
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Symmetry-allowed nonlinear orbital response across the topological phase transition
in centrosymmetric materials
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 105
year: '2022'
...
---
_id: '11337'
abstract:
- lang: eng
text: 'Nonanalytic points in the return probability of a quantum state as a function
of time, known as dynamical quantum phase transitions (DQPTs), have received great
attention in recent years, but the understanding of their mechanism is still incomplete.
In our recent work [Phys. Rev. Lett. 126, 040602 (2021)], we demonstrated that
one-dimensional DQPTs can be produced by two distinct mechanisms, namely semiclassical
precession and entanglement generation, leading to the definition of precession
(pDQPTs) and entanglement (eDQPTs) dynamical quantum phase transitions. In this
manuscript, we extend and investigate the notion of p- and eDQPTs in two-dimensional
systems by considering semi-infinite ladders of varying width. For square lattices,
we find that pDQPTs and eDQPTs persist and are characterized by similar phenomenology
as in 1D: pDQPTs are associated with a magnetization sign change and a wide entanglement
gap, while eDQPTs correspond to suppressed local observables and avoided crossings
in the entanglement spectrum. However, DQPTs show higher sensitivity to the ladder
width and other details, challenging the extrapolation to the thermodynamic limit
especially for eDQPTs. Moving to honeycomb lattices, we also demonstrate that
lattices with an odd number of nearest neighbors give rise to phenomenologies
beyond the one-dimensional classification.'
acknowledgement: "We acknowledge support by the European Research Council (ERC) under
the European Union’s Horizon 2020 research and innovation programme (Grant Agreement
No. 850899).\r\nS.D.N. also acknowledges funding from the Institute of Science and
Technology (IST) Austria, and from the European Union’s Horizon 2020 Research and
Innovation Programme under the Marie Skłodowska-Curie Grant Agreement No. 754411."
article_number: '165149'
article_processing_charge: No
article_type: original
author:
- first_name: Stefano
full_name: De Nicola, Stefano
id: 42832B76-F248-11E8-B48F-1D18A9856A87
last_name: De Nicola
orcid: 0000-0002-4842-6671
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: De Nicola S, Michailidis A, Serbyn M. Entanglement and precession in two-dimensional
dynamical quantum phase transitions. Physical Review B. 2022;105. doi:10.1103/PhysRevB.105.165149
apa: De Nicola, S., Michailidis, A., & Serbyn, M. (2022). Entanglement and precession
in two-dimensional dynamical quantum phase transitions. Physical Review B.
American Physical Society. https://doi.org/10.1103/PhysRevB.105.165149
chicago: De Nicola, Stefano, Alexios Michailidis, and Maksym Serbyn. “Entanglement
and Precession in Two-Dimensional Dynamical Quantum Phase Transitions.” Physical
Review B. American Physical Society, 2022. https://doi.org/10.1103/PhysRevB.105.165149.
ieee: S. De Nicola, A. Michailidis, and M. Serbyn, “Entanglement and precession
in two-dimensional dynamical quantum phase transitions,” Physical Review B,
vol. 105. American Physical Society, 2022.
ista: De Nicola S, Michailidis A, Serbyn M. 2022. Entanglement and precession in
two-dimensional dynamical quantum phase transitions. Physical Review B. 105, 165149.
mla: De Nicola, Stefano, et al. “Entanglement and Precession in Two-Dimensional
Dynamical Quantum Phase Transitions.” Physical Review B, vol. 105, 165149,
American Physical Society, 2022, doi:10.1103/PhysRevB.105.165149.
short: S. De Nicola, A. Michailidis, M. Serbyn, Physical Review B 105 (2022).
date_created: 2022-04-28T08:06:10Z
date_published: 2022-04-15T00:00:00Z
date_updated: 2023-08-03T06:33:33Z
day: '15'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.105.165149
ec_funded: 1
external_id:
arxiv:
- '2112.11273'
isi:
- '000806812400004'
intvolume: ' 105'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2112.11273'
month: '04'
oa: 1
oa_version: Preprint
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review B
publication_identifier:
eisbn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Entanglement and precession in two-dimensional dynamical quantum phase transitions
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 105
year: '2022'
...
---
_id: '11379'
abstract:
- lang: eng
text: Bernal-stacked multilayer graphene is a versatile platform to explore quantum
transport phenomena and interaction physics due to its exceptional tunability
via electrostatic gating. For instance, upon applying a perpendicular electric
field, its band structure exhibits several off-center Dirac points (so-called
Dirac gullies) in each valley. Here, the formation of Dirac gullies and the interaction-induced
breakdown of gully coherence is explored via magnetotransport measurements in
high-quality Bernal-stacked (ABA) trilayer graphene. At zero magnetic field, multiple
Lifshitz transitions indicating the formation of Dirac gullies are identified.
In the quantum Hall regime, the emergence of Dirac gullies is evident as an increase
in Landau level degeneracy. When tuning both electric and magnetic fields, electron–electron
interactions can be controllably enhanced until, beyond critical electric and
magnetic fields, the gully degeneracy is eventually lifted. The arising correlated
ground state is consistent with a previously predicted nematic phase that spontaneously
breaks the rotational gully symmetry.
acknowledgement: "We acknowledge funding from the Center for Nanoscience (CeNS) and
by the Deutsche\r\nForschungsgemeinschaft (DFG, German Research Foundation) under
Germany’s Excellence Strategy-EXC-2111-390814868 (MCQST). K.W. and T.T. acknowledge
support from the Elemental Strategy Initiative conducted by the MEXT, Japan (Grant
Number PMXP0112101001) and JSPS KAKENHI (Grant Numbers 19H05790 and JP20H00354)."
article_processing_charge: No
article_type: original
author:
- first_name: Felix
full_name: Winterer, Felix
last_name: Winterer
- first_name: Anna M.
full_name: Seiler, Anna M.
last_name: Seiler
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Fabian R.
full_name: Geisenhof, Fabian R.
last_name: Geisenhof
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: R. Thomas
full_name: Weitz, R. Thomas
last_name: Weitz
citation:
ama: Winterer F, Seiler AM, Ghazaryan A, et al. Spontaneous gully-polarized quantum
hall states in ABA trilayer graphene. Nano Letters. 2022;22(8):3317-3322.
doi:10.1021/acs.nanolett.2c00435
apa: Winterer, F., Seiler, A. M., Ghazaryan, A., Geisenhof, F. R., Watanabe, K.,
Taniguchi, T., … Weitz, R. T. (2022). Spontaneous gully-polarized quantum hall
states in ABA trilayer graphene. Nano Letters. American Chemical Society.
https://doi.org/10.1021/acs.nanolett.2c00435
chicago: Winterer, Felix, Anna M. Seiler, Areg Ghazaryan, Fabian R. Geisenhof, Kenji
Watanabe, Takashi Taniguchi, Maksym Serbyn, and R. Thomas Weitz. “Spontaneous
Gully-Polarized Quantum Hall States in ABA Trilayer Graphene.” Nano Letters.
American Chemical Society, 2022. https://doi.org/10.1021/acs.nanolett.2c00435.
ieee: F. Winterer et al., “Spontaneous gully-polarized quantum hall states
in ABA trilayer graphene,” Nano Letters, vol. 22, no. 8. American Chemical
Society, pp. 3317–3322, 2022.
ista: Winterer F, Seiler AM, Ghazaryan A, Geisenhof FR, Watanabe K, Taniguchi T,
Serbyn M, Weitz RT. 2022. Spontaneous gully-polarized quantum hall states in ABA
trilayer graphene. Nano Letters. 22(8), 3317–3322.
mla: Winterer, Felix, et al. “Spontaneous Gully-Polarized Quantum Hall States in
ABA Trilayer Graphene.” Nano Letters, vol. 22, no. 8, American Chemical
Society, 2022, pp. 3317–22, doi:10.1021/acs.nanolett.2c00435.
short: F. Winterer, A.M. Seiler, A. Ghazaryan, F.R. Geisenhof, K. Watanabe, T. Taniguchi,
M. Serbyn, R.T. Weitz, Nano Letters 22 (2022) 3317–3322.
date_created: 2022-05-15T22:01:41Z
date_published: 2022-04-27T00:00:00Z
date_updated: 2023-08-03T07:12:45Z
day: '27'
department:
- _id: MaSe
doi: 10.1021/acs.nanolett.2c00435
external_id:
arxiv:
- '2109.00556'
isi:
- '000809056900019'
intvolume: ' 22'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2109.00556'
month: '04'
oa: 1
oa_version: Preprint
page: 3317-3322
publication: Nano Letters
publication_identifier:
eissn:
- '15306992'
issn:
- '15306984'
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Spontaneous gully-polarized quantum hall states in ABA trilayer graphene
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 22
year: '2022'
...
---
_id: '11470'
abstract:
- lang: eng
text: Many-body localization (MBL) is an example of a dynamical phase of matter
that avoids thermalization. While the MBL phase is robust to weak local perturbations,
the fate of an MBL system coupled to a thermalizing quantum system that represents
a “heat bath” is an open question that is actively investigated theoretically
and experimentally. In this work, we consider the stability of an Anderson insulator
with a finite density of particles interacting with a single mobile impurity—a
small quantum bath. We give perturbative arguments that support the stability
of localization in the strong interaction regime. Large-scale tensor network simulations
of dynamics are employed to corroborate the presence of the localized phase and
give quantitative predictions in the thermodynamic limit. We develop a phenomenological
description of the dynamics in the strong interaction regime, and we demonstrate
that the impurity effectively turns the Anderson insulator into an MBL phase,
giving rise to nontrivial entanglement dynamics well captured by our phenomenology.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: We acknowledge useful discussions with M. Ljubotina. P. B., A. M.,
and M. S. were supported by the European Research Council (ERC) under the European
Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899).
D.A. was supported by the Swiss National Science Foundation and by the European
Research Council (ERC) under the European Union’s Horizon 2020 research and innovation
program (Grant Agreement No. 864597). The development of parallel TEBD code was
was supported by S. Elefante from the Scientific Computing (SciComp) that is part
of Scientific Service Units (SSU) of IST Austria. Some of the computations were
performed on the Baobab cluster of the University of Geneva.
article_number: L220203
article_processing_charge: No
article_type: original
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Alexios A.
full_name: Michailidis, Alexios A.
last_name: Michailidis
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Brighi P, Michailidis AA, Abanin DA, Serbyn M. Propagation of many-body localization
in an Anderson insulator. Physical Review B. 2022;105(22). doi:10.1103/physrevb.105.l220203
apa: Brighi, P., Michailidis, A. A., Abanin, D. A., & Serbyn, M. (2022). Propagation
of many-body localization in an Anderson insulator. Physical Review B.
American Physical Society. https://doi.org/10.1103/physrevb.105.l220203
chicago: Brighi, Pietro, Alexios A. Michailidis, Dmitry A. Abanin, and Maksym Serbyn.
“Propagation of Many-Body Localization in an Anderson Insulator.” Physical
Review B. American Physical Society, 2022. https://doi.org/10.1103/physrevb.105.l220203.
ieee: P. Brighi, A. A. Michailidis, D. A. Abanin, and M. Serbyn, “Propagation of
many-body localization in an Anderson insulator,” Physical Review B, vol.
105, no. 22. American Physical Society, 2022.
ista: Brighi P, Michailidis AA, Abanin DA, Serbyn M. 2022. Propagation of many-body
localization in an Anderson insulator. Physical Review B. 105(22), L220203.
mla: Brighi, Pietro, et al. “Propagation of Many-Body Localization in an Anderson
Insulator.” Physical Review B, vol. 105, no. 22, L220203, American Physical
Society, 2022, doi:10.1103/physrevb.105.l220203.
short: P. Brighi, A.A. Michailidis, D.A. Abanin, M. Serbyn, Physical Review B 105
(2022).
date_created: 2022-06-29T20:20:47Z
date_published: 2022-06-27T00:00:00Z
date_updated: 2023-08-03T07:23:52Z
day: '27'
department:
- _id: MaSe
doi: 10.1103/physrevb.105.l220203
ec_funded: 1
external_id:
arxiv:
- '2109.07332'
isi:
- '000823050000012'
intvolume: ' 105'
isi: 1
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2109.07332'
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '12732'
relation: dissertation_contains
status: public
status: public
title: Propagation of many-body localization in an Anderson insulator
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 105
year: '2022'
...
---
_id: '12259'
abstract:
- lang: eng
text: 'Theoretical foundations of chaos have been predominantly laid out for finite-dimensional
dynamical systems, such as the three-body problem in classical mechanics and the
Lorenz model in dissipative systems. In contrast, many real-world chaotic phenomena,
e.g., weather, arise in systems with many (formally infinite) degrees of freedom,
which limits direct quantitative analysis of such systems using chaos theory.
In the present work, we demonstrate that the hydrodynamic pilot-wave systems offer
a bridge between low- and high-dimensional chaotic phenomena by allowing for a
systematic study of how the former connects to the latter. Specifically, we present
experimental results, which show the formation of low-dimensional chaotic attractors
upon destabilization of regular dynamics and a final transition to high-dimensional
chaos via the merging of distinct chaotic regions through a crisis bifurcation.
Moreover, we show that the post-crisis dynamics of the system can be rationalized
as consecutive scatterings from the nonattracting chaotic sets with lifetimes
following exponential distributions. '
acknowledgement: 'This work was partially funded by the Institute of Science and Technology
Austria Interdisciplinary Project Committee Grant “Pilot-Wave Hydrodynamics: Chaos
and Quantum Analogies.”'
article_number: '093138'
article_processing_charge: No
article_type: original
author:
- first_name: George H
full_name: Choueiri, George H
id: 448BD5BC-F248-11E8-B48F-1D18A9856A87
last_name: Choueiri
- first_name: Balachandra
full_name: Suri, Balachandra
id: 47A5E706-F248-11E8-B48F-1D18A9856A87
last_name: Suri
- first_name: Jack
full_name: Merrin, Jack
id: 4515C308-F248-11E8-B48F-1D18A9856A87
last_name: Merrin
orcid: 0000-0001-5145-4609
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Björn
full_name: Hof, Björn
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
- first_name: Nazmi B
full_name: Budanur, Nazmi B
id: 3EA1010E-F248-11E8-B48F-1D18A9856A87
last_name: Budanur
orcid: 0000-0003-0423-5010
citation:
ama: 'Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. Crises and chaotic
scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary
Journal of Nonlinear Science. 2022;32(9). doi:10.1063/5.0102904'
apa: 'Choueiri, G. H., Suri, B., Merrin, J., Serbyn, M., Hof, B., & Budanur,
N. B. (2022). Crises and chaotic scattering in hydrodynamic pilot-wave experiments.
Chaos: An Interdisciplinary Journal of Nonlinear Science. AIP Publishing.
https://doi.org/10.1063/5.0102904'
chicago: 'Choueiri, George H, Balachandra Suri, Jack Merrin, Maksym Serbyn, Björn
Hof, and Nazmi B Budanur. “Crises and Chaotic Scattering in Hydrodynamic Pilot-Wave
Experiments.” Chaos: An Interdisciplinary Journal of Nonlinear Science.
AIP Publishing, 2022. https://doi.org/10.1063/5.0102904.'
ieee: 'G. H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, and N. B. Budanur,
“Crises and chaotic scattering in hydrodynamic pilot-wave experiments,” Chaos:
An Interdisciplinary Journal of Nonlinear Science, vol. 32, no. 9. AIP Publishing,
2022.'
ista: 'Choueiri GH, Suri B, Merrin J, Serbyn M, Hof B, Budanur NB. 2022. Crises
and chaotic scattering in hydrodynamic pilot-wave experiments. Chaos: An Interdisciplinary
Journal of Nonlinear Science. 32(9), 093138.'
mla: 'Choueiri, George H., et al. “Crises and Chaotic Scattering in Hydrodynamic
Pilot-Wave Experiments.” Chaos: An Interdisciplinary Journal of Nonlinear Science,
vol. 32, no. 9, 093138, AIP Publishing, 2022, doi:10.1063/5.0102904.'
short: 'G.H. Choueiri, B. Suri, J. Merrin, M. Serbyn, B. Hof, N.B. Budanur, Chaos:
An Interdisciplinary Journal of Nonlinear Science 32 (2022).'
date_created: 2023-01-16T09:58:16Z
date_published: 2022-09-26T00:00:00Z
date_updated: 2023-08-04T09:51:17Z
day: '26'
ddc:
- '530'
department:
- _id: MaSe
- _id: BjHo
- _id: NanoFab
doi: 10.1063/5.0102904
external_id:
arxiv:
- '2206.01531'
isi:
- '000861009600005'
file:
- access_level: open_access
checksum: 17881eff8b21969359a2dd64620120ba
content_type: application/pdf
creator: dernst
date_created: 2023-01-30T09:41:12Z
date_updated: 2023-01-30T09:41:12Z
file_id: '12445'
file_name: 2022_Chaos_Choueiri.pdf
file_size: 3209644
relation: main_file
success: 1
file_date_updated: 2023-01-30T09:41:12Z
has_accepted_license: '1'
intvolume: ' 32'
isi: 1
issue: '9'
keyword:
- Applied Mathematics
- General Physics and Astronomy
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
publication: 'Chaos: An Interdisciplinary Journal of Nonlinear Science'
publication_identifier:
eissn:
- 1089-7682
issn:
- 1054-1500
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Crises and chaotic scattering in hydrodynamic pilot-wave experiments
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 32
year: '2022'
...
---
_id: '12269'
abstract:
- lang: eng
text: We study the thermalization of a small XX chain coupled to long, gapped XXZ
leads at either side by observing the relaxation dynamics of the whole system.
Using extensive tensor network simulations, we show that such systems, although
not integrable, appear to show either extremely slow thermalization or even lack
thereof since the two cannot be distinguished within the accuracy of our numerics.
We show that the persistent oscillations observed in the spin current in the middle
of the XX chain are related to eigenstates of the entire system located within
the gap of the boundary chains. We find from exact diagonalization that some of
these states remain strictly localized within the XX chain and do not hybridize
with the rest of the system. The frequencies of the persistent oscillations determined
by numerical simulations of dynamics match the energy differences between these
states exactly. This has important implications for open systems, where the strongly
interacting leads are often assumed to thermalize the central system. Our results
suggest that, if we employ gapped systems for the leads, this assumption does
not hold.
acknowledgement: "M.L. and T.P. acknowledge support from the European Research Council
(ERC) through the advanced grant 694544 – OMNES and the grant P1-0402 of Slovenian
Research Agency (ARRS). M.L. acknowledges support from the European Research Council
(ERC) through the starting grant 850899 – NEQuM. D.R. acknowledges support from
the Ministry of Electronics & Information Technology (MeitY), India under the grant
for “Centre for Excellence in Quantum\r\nTechnologies” with Ref. No. 4(7)/2020-ITEA. "
article_number: '054314'
article_processing_charge: No
article_type: original
author:
- first_name: Marko
full_name: Ljubotina, Marko
id: F75EE9BE-5C90-11EA-905D-16643DDC885E
last_name: Ljubotina
- first_name: Dibyendu
full_name: Roy, Dibyendu
last_name: Roy
- first_name: Tomaž
full_name: Prosen, Tomaž
last_name: Prosen
citation:
ama: Ljubotina M, Roy D, Prosen T. Absence of thermalization of free systems coupled
to gapped interacting reservoirs. Physical Review B. 2022;106(5). doi:10.1103/physrevb.106.054314
apa: Ljubotina, M., Roy, D., & Prosen, T. (2022). Absence of thermalization
of free systems coupled to gapped interacting reservoirs. Physical Review B.
American Physical Society. https://doi.org/10.1103/physrevb.106.054314
chicago: Ljubotina, Marko, Dibyendu Roy, and Tomaž Prosen. “Absence of Thermalization
of Free Systems Coupled to Gapped Interacting Reservoirs.” Physical Review
B. American Physical Society, 2022. https://doi.org/10.1103/physrevb.106.054314.
ieee: M. Ljubotina, D. Roy, and T. Prosen, “Absence of thermalization of free systems
coupled to gapped interacting reservoirs,” Physical Review B, vol. 106,
no. 5. American Physical Society, 2022.
ista: Ljubotina M, Roy D, Prosen T. 2022. Absence of thermalization of free systems
coupled to gapped interacting reservoirs. Physical Review B. 106(5), 054314.
mla: Ljubotina, Marko, et al. “Absence of Thermalization of Free Systems Coupled
to Gapped Interacting Reservoirs.” Physical Review B, vol. 106, no. 5,
054314, American Physical Society, 2022, doi:10.1103/physrevb.106.054314.
short: M. Ljubotina, D. Roy, T. Prosen, Physical Review B 106 (2022).
date_created: 2023-01-16T10:00:39Z
date_published: 2022-08-31T00:00:00Z
date_updated: 2023-08-04T10:07:33Z
day: '31'
department:
- _id: MaSe
doi: 10.1103/physrevb.106.054314
ec_funded: 1
external_id:
arxiv:
- '2106.08373'
isi:
- '000861332900005'
intvolume: ' 106'
isi: 1
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2106.08373
month: '08'
oa: 1
oa_version: Preprint
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Absence of thermalization of free systems coupled to gapped interacting reservoirs
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2022'
...
---
_id: '11469'
abstract:
- lang: eng
text: Thermalizing and localized many-body quantum systems present two distinct
dynamical phases of matter. Recently the fate of a localized system coupled to
a thermalizing system viewed as a quantum bath received significant theoretical
and experimental attention. In this work, we study a mobile impurity, representing
a small quantum bath, that interacts locally with an Anderson insulator with a
finite density of localized particles. Using static Hartree approximation to obtain
an effective disorder strength, we formulate an analytic criterion for the perturbative
stability of the localization. Next, we use an approximate dynamical Hartree method
and the quasi-exact time-evolved block decimation (TEBD) algorithm to study the
dynamics of the system. We find that the dynamical Hartree approach which completely
ignores entanglement between the impurity and localized particles predicts the
delocalization of the system. In contrast, the full numerical simulation of the
unitary dynamics with TEBD suggests the stability of localization on numerically
accessible timescales. Finally, using an extension of the density matrix renormalization
group algorithm to excited states (DMRG-X), we approximate the highly excited
eigenstates of the system. We find that the impurity remains localized in the
eigenstates and entanglement is enhanced in a finite region around the position
of the impurity, confirming the dynamical predictions. Dynamics and the DMRG-X
results provide compelling evidence for the stability of localization.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: We thank M. Ljubotina for insightful discussions. P. B., A. M. and
M. S. acknowledge support by the European Research Council (ERC) under the European
Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899).
D. A. was supported by the Swiss National Science Foundation and by the European
Research Council (ERC) under the European Union’s Horizon 2020 research and innovation
program (Grant Agreement No. 864597). The development of parallel TEBD code was
supported by S. Elefante from the Scientific Computing (SciComp) that is part of
Scientific Service Units (SSU) of IST Austria. Some of the computations were performed
on the Baobab cluster of the University of Geneva.
article_number: '224208'
article_processing_charge: No
article_type: original
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Kristina
full_name: Kirova, Kristina
id: 4aeda2ae-f847-11ec-98e0-c4a66fe174d4
last_name: Kirova
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Brighi P, Michailidis A, Kirova K, Abanin DA, Serbyn M. Localization of a mobile
impurity interacting with an Anderson insulator. Physical Review B. 2022;105(22).
doi:10.1103/physrevb.105.224208
apa: Brighi, P., Michailidis, A., Kirova, K., Abanin, D. A., & Serbyn, M. (2022).
Localization of a mobile impurity interacting with an Anderson insulator. Physical
Review B. American Physical Society. https://doi.org/10.1103/physrevb.105.224208
chicago: Brighi, Pietro, Alexios Michailidis, Kristina Kirova, Dmitry A. Abanin,
and Maksym Serbyn. “Localization of a Mobile Impurity Interacting with an Anderson
Insulator.” Physical Review B. American Physical Society, 2022. https://doi.org/10.1103/physrevb.105.224208.
ieee: P. Brighi, A. Michailidis, K. Kirova, D. A. Abanin, and M. Serbyn, “Localization
of a mobile impurity interacting with an Anderson insulator,” Physical Review
B, vol. 105, no. 22. American Physical Society, 2022.
ista: Brighi P, Michailidis A, Kirova K, Abanin DA, Serbyn M. 2022. Localization
of a mobile impurity interacting with an Anderson insulator. Physical Review B.
105(22), 224208.
mla: Brighi, Pietro, et al. “Localization of a Mobile Impurity Interacting with
an Anderson Insulator.” Physical Review B, vol. 105, no. 22, 224208, American
Physical Society, 2022, doi:10.1103/physrevb.105.224208.
short: P. Brighi, A. Michailidis, K. Kirova, D.A. Abanin, M. Serbyn, Physical Review
B 105 (2022).
date_created: 2022-06-29T20:19:51Z
date_published: 2022-06-27T00:00:00Z
date_updated: 2023-09-05T12:12:52Z
day: '27'
department:
- _id: MaSe
doi: 10.1103/physrevb.105.224208
ec_funded: 1
external_id:
arxiv:
- '2111.08603'
isi:
- '000823050000001'
intvolume: ' 105'
isi: 1
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2111.08603 Focus to learn more'
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '12732'
relation: dissertation_contains
status: public
status: public
title: Localization of a mobile impurity interacting with an Anderson insulator
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 105
year: '2022'
...
---
_id: '12750'
abstract:
- lang: eng
text: Quantum kinetically constrained models have recently attracted significant
attention due to their anomalous dynamics and thermalization. In this work, we
introduce a hitherto unexplored family of kinetically constrained models featuring
a conserved particle number and strong inversion-symmetry breaking due to facilitated
hopping. We demonstrate that these models provide a generic example of so-called
quantum Hilbert space fragmentation, that is manifested in disconnected sectors
in the Hilbert space that are not apparent in the computational basis. Quantum
Hilbert space fragmentation leads to an exponential in system size number of eigenstates
with exactly zero entanglement entropy across several bipartite cuts. These eigenstates
can be probed dynamically using quenches from simple initial product states. In
addition, we study the particle spreading under unitary dynamics launched from
the domain wall state, and find faster than diffusive dynamics at high particle
densities, that crosses over into logarithmically slow relaxation at smaller densities.
Using a classically simulable cellular automaton, we reproduce the logarithmic
dynamics observed in the quantum case. Our work suggests that particle conserving
constrained models with inversion symmetry breaking realize so far unexplored
universality classes of dynamics and invite their further theoretical and experimental
studies.
article_number: '2210.15607'
article_processing_charge: No
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Marko
full_name: Ljubotina, Marko
id: F75EE9BE-5C90-11EA-905D-16643DDC885E
last_name: Ljubotina
orcid: 0000-0003-0038-7068
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics
in particle-conserving quantum East models. arXiv. doi:10.48550/arXiv.2210.15607
apa: Brighi, P., Ljubotina, M., & Serbyn, M. (n.d.). Hilbert space fragmentation
and slow dynamics in particle-conserving quantum East models. arXiv. https://doi.org/10.48550/arXiv.2210.15607
chicago: Brighi, Pietro, Marko Ljubotina, and Maksym Serbyn. “Hilbert Space Fragmentation
and Slow Dynamics in Particle-Conserving Quantum East Models.” ArXiv, n.d.
https://doi.org/10.48550/arXiv.2210.15607.
ieee: P. Brighi, M. Ljubotina, and M. Serbyn, “Hilbert space fragmentation and slow
dynamics in particle-conserving quantum East models,” arXiv. .
ista: Brighi P, Ljubotina M, Serbyn M. Hilbert space fragmentation and slow dynamics
in particle-conserving quantum East models. arXiv, 2210.15607.
mla: Brighi, Pietro, et al. “Hilbert Space Fragmentation and Slow Dynamics in Particle-Conserving
Quantum East Models.” ArXiv, 2210.15607, doi:10.48550/arXiv.2210.15607.
short: P. Brighi, M. Ljubotina, M. Serbyn, ArXiv (n.d.).
date_created: 2023-03-23T14:33:13Z
date_published: 2022-11-07T00:00:00Z
date_updated: 2023-09-20T10:46:29Z
day: '07'
department:
- _id: GradSch
- _id: MaSe
doi: 10.48550/arXiv.2210.15607
external_id:
arxiv:
- '2210.15607'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2210.15607
month: '11'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
related_material:
record:
- id: '12732'
relation: dissertation_contains
status: public
- id: '14334'
relation: later_version
status: public
status: public
title: Hilbert space fragmentation and slow dynamics in particle-conserving quantum
East models
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '10851'
abstract:
- lang: eng
text: Superconductor-semiconductor hybrid devices are at the heart of several proposed
approaches to quantum information processing, but their basic properties remain
to be understood. We embed a twodimensional Al-InAs hybrid system in a resonant
microwave circuit, probing the breakdown of superconductivity due to an applied
magnetic field. We find a fingerprint from the two-component nature of the hybrid
system, and quantitatively compare with a theory that includes the contribution
of intraband p±ip pairing in the InAs, as well as the emergence of Bogoliubov-Fermi
surfaces due to magnetic field. Separately resolving the Al and InAs contributions
allows us to determine the carrier density and mobility in the InAs.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: M. S. acknowledges useful discussions with A. Levchenko and P. A.
Lee, and E. Berg. This research was supported by the Scientific Service Units of
IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication
facility. J. S. and A. G. acknowledge funding from the European Union’s Horizon
2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement
No. 754411.W. M. Hatefipour, W. M. Strickland and J. Shabani acknowledge funding
from Office of Naval Research Award No. N00014-21-1-2450.
article_number: '107701'
article_processing_charge: No
article_type: original
author:
- first_name: Duc T
full_name: Phan, Duc T
id: 29C8C0B4-F248-11E8-B48F-1D18A9856A87
last_name: Phan
- first_name: Jorden L
full_name: Senior, Jorden L
id: 5479D234-2D30-11EA-89CC-40953DDC885E
last_name: Senior
orcid: 0000-0002-0672-9295
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: M.
full_name: Hatefipour, M.
last_name: Hatefipour
- first_name: W. M.
full_name: Strickland, W. M.
last_name: Strickland
- first_name: J.
full_name: Shabani, J.
last_name: Shabani
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Andrew P
full_name: Higginbotham, Andrew P
id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
last_name: Higginbotham
orcid: 0000-0003-2607-2363
citation:
ama: Phan DT, Senior JL, Ghazaryan A, et al. Detecting induced p±ip pairing at the
Al-InAs interface with a quantum microwave circuit. Physical Review Letters.
2022;128(10). doi:10.1103/physrevlett.128.107701
apa: Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M.,
Shabani, J., … Higginbotham, A. P. (2022). Detecting induced p±ip pairing at the
Al-InAs interface with a quantum microwave circuit. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/physrevlett.128.107701
chicago: Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland,
J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Detecting Induced P±ip
Pairing at the Al-InAs Interface with a Quantum Microwave Circuit.” Physical
Review Letters. American Physical Society, 2022. https://doi.org/10.1103/physrevlett.128.107701.
ieee: D. T. Phan et al., “Detecting induced p±ip pairing at the Al-InAs interface
with a quantum microwave circuit,” Physical Review Letters, vol. 128, no.
10. American Physical Society, 2022.
ista: Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn
M, Higginbotham AP. 2022. Detecting induced p±ip pairing at the Al-InAs interface
with a quantum microwave circuit. Physical Review Letters. 128(10), 107701.
mla: Phan, Duc T., et al. “Detecting Induced P±ip Pairing at the Al-InAs Interface
with a Quantum Microwave Circuit.” Physical Review Letters, vol. 128, no.
10, 107701, American Physical Society, 2022, doi:10.1103/physrevlett.128.107701.
short: D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J.
Shabani, M. Serbyn, A.P. Higginbotham, Physical Review Letters 128 (2022).
date_created: 2022-03-17T11:37:47Z
date_published: 2022-03-11T00:00:00Z
date_updated: 2023-11-30T10:56:03Z
day: '11'
department:
- _id: MaSe
- _id: AnHi
doi: 10.1103/physrevlett.128.107701
ec_funded: 1
external_id:
arxiv:
- '2107.03695'
isi:
- '000771391100002'
pmid:
- ' 35333085'
intvolume: ' 128'
isi: 1
issue: '10'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2107.03695
month: '03'
oa: 1
oa_version: Preprint
pmid: 1
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on ISTA Website
relation: press_release
url: https://ista.ac.at/en/news/characterizing-super-semi-sandwiches-for-quantum-computing/
record:
- id: '10029'
relation: earlier_version
status: public
- id: '14547'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Detecting induced p±ip pairing at the Al-InAs interface with a quantum microwave
circuit
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 128
year: '2022'
...
---
_id: '11471'
abstract:
- lang: eng
text: 'Variational quantum algorithms are promising algorithms for achieving quantum
advantage on nearterm devices. The quantum hardware is used to implement a variational
wave function and measure observables, whereas the classical computer is used
to store and update the variational parameters. The optimization landscape of
expressive variational ansätze is however dominated by large regions in parameter
space, known as barren plateaus, with vanishing gradients, which prevents efficient
optimization. In this work we propose a general algorithm to avoid barren plateaus
in the initialization and throughout the optimization. To this end we define a
notion of weak barren plateaus (WBPs) based on the entropies of local reduced
density matrices. The presence of WBPs can be efficiently quantified using recently
introduced shadow tomography of the quantum state with a classical computer. We
demonstrate that avoidance of WBPs suffices to ensure sizable gradients in the
initialization. In addition, we demonstrate that decreasing the gradient step
size, guided by the entropies allows WBPs to be avoided during the optimization
process. This paves the way for efficient barren plateau-free optimization on
near-term devices. '
acknowledgement: "We thank Marco Cerezo, Zoe Holmes, and Nicholas Hunter-Jones for
fruitful discussion and valuable feedback. We also acknowledge Adam Smith, Johannes
Jakob Meyer, and Victor V. Albert for comments on the paper. The simulations were
performed in the Julia programming\r\nlanguage [65] using the Yao module [66]. S.H.S.,
R.A.M., A.A.M. and M.S. acknowledge support by the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation program (Grant Agreement
No. 850899)."
article_number: '020365'
article_processing_charge: No
article_type: original
author:
- first_name: Stefan
full_name: Sack, Stefan
id: dd622248-f6e0-11ea-865d-ce382a1c81a5
last_name: Sack
orcid: 0000-0001-5400-8508
- first_name: Raimel A
full_name: Medina Ramos, Raimel A
id: CE680B90-D85A-11E9-B684-C920E6697425
last_name: Medina Ramos
orcid: 0000-0002-5383-2869
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Richard
full_name: Kueng, Richard
last_name: Kueng
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Sack S, Medina Ramos RA, Michailidis A, Kueng R, Serbyn M. Avoiding barren
plateaus using classical shadows. PRX Quantum. 2022;3(2). doi:10.1103/prxquantum.3.020365
apa: Sack, S., Medina Ramos, R. A., Michailidis, A., Kueng, R., & Serbyn, M.
(2022). Avoiding barren plateaus using classical shadows. PRX Quantum.
American Physical Society. https://doi.org/10.1103/prxquantum.3.020365
chicago: Sack, Stefan, Raimel A Medina Ramos, Alexios Michailidis, Richard Kueng,
and Maksym Serbyn. “Avoiding Barren Plateaus Using Classical Shadows.” PRX
Quantum. American Physical Society, 2022. https://doi.org/10.1103/prxquantum.3.020365.
ieee: S. Sack, R. A. Medina Ramos, A. Michailidis, R. Kueng, and M. Serbyn, “Avoiding
barren plateaus using classical shadows,” PRX Quantum, vol. 3, no. 2. American
Physical Society, 2022.
ista: Sack S, Medina Ramos RA, Michailidis A, Kueng R, Serbyn M. 2022. Avoiding
barren plateaus using classical shadows. PRX Quantum. 3(2), 020365.
mla: Sack, Stefan, et al. “Avoiding Barren Plateaus Using Classical Shadows.” PRX
Quantum, vol. 3, no. 2, 020365, American Physical Society, 2022, doi:10.1103/prxquantum.3.020365.
short: S. Sack, R.A. Medina Ramos, A. Michailidis, R. Kueng, M. Serbyn, PRX Quantum
3 (2022).
date_created: 2022-06-29T20:21:32Z
date_published: 2022-06-29T00:00:00Z
date_updated: 2023-12-13T14:47:24Z
day: '29'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/prxquantum.3.020365
ec_funded: 1
external_id:
arxiv:
- '2201.08194'
isi:
- '000822564300001'
file:
- access_level: open_access
checksum: a7706b28d24a0e32a55ea04b82a2df43
content_type: application/pdf
creator: dernst
date_created: 2022-06-30T07:14:48Z
date_updated: 2022-06-30T07:14:48Z
file_id: '11472'
file_name: 2022_PRXQuantum_Sack.pdf
file_size: 4231591
relation: main_file
success: 1
file_date_updated: 2022-06-30T07:14:48Z
has_accepted_license: '1'
intvolume: ' 3'
isi: 1
issue: '2'
keyword:
- General Medicine
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: PRX Quantum
publication_identifier:
issn:
- 2691-3399
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '14622'
relation: dissertation_contains
status: public
status: public
title: Avoiding barren plateaus using classical shadows
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 3
year: '2022'
...
---
_id: '8198'
abstract:
- lang: eng
text: We investigate how the critical driving amplitude at the Floquet many-body
localized (MBL) to ergodic phase transition differs between smooth and nonsmooth
drives. To this end, we numerically study a disordered spin-1/2 chain which is
periodically driven by a sine or square-wave drive over a wide range of driving
frequencies. In both cases the critical driving amplitude increases monotonically
with the frequency, and at large frequencies it is identical for the two drives.
However, at low and intermediate frequencies the critical amplitude of the square-wave
drive depends strongly on the frequency, while that of the sinusoidal drive is
almost constant over a wide frequency range. By analyzing the density of drive-induced
resonances we conclude that this difference is due to resonances induced by the
higher harmonics which are present (absent) in the Fourier spectrum of the square-wave
(sine) drive. Furthermore, we suggest a numerically efficient method for estimating
the frequency dependence of the critical driving amplitudes for different drives
which is based on calculating the density of drive-induced resonances. We conclude
that delocalization occurs once the density of drive-induced resonances reaches
a critical value determined only by the static system.
acknowledgement: We thank Y. Bar Lev, T. Biadse, and, particularly, E. Bairey and
B. Katzir for illuminating discussions and their many insights and help. The authors
thank N. Lindner for his support throughout this project. We are further grateful
to M. Serbyn, A. Kamenev, A. Turner, and S. de Nicola for reading the manuscript
and providing good feedback and suggestions. We acknowledge financial support from
the Defense Advanced Research Projects Agency through the DRINQS program, Grant
No. D18AC00025. T.G. was in part supported by an Aly Kaufman Fellowship at the Technion.
T.G. acknowledges funding from the Institute of Science and Technology (IST) Austria
and from the European Union’s Horizon 2020 research and innovation program under
Marie SkłodowskaCurie Grant Agreement No. 754411.under the Marie Skłodowska-Curie
Grant Agreement No.754411.
article_number: '214204'
article_processing_charge: No
article_type: original
author:
- first_name: Asaf A.
full_name: Diringer, Asaf A.
last_name: Diringer
- first_name: Tobias
full_name: Gulden, Tobias
id: 1083E038-9F73-11E9-A4B5-532AE6697425
last_name: Gulden
orcid: 0000-0001-6814-7541
citation:
ama: Diringer AA, Gulden T. Impact of drive harmonics on the stability of Floquet
many-body localization. Physical Review B. 2021;103(21). doi:10.1103/PhysRevB.103.214204
apa: Diringer, A. A., & Gulden, T. (2021). Impact of drive harmonics on the
stability of Floquet many-body localization. Physical Review B. American
Physical Society. https://doi.org/10.1103/PhysRevB.103.214204
chicago: Diringer, Asaf A., and Tobias Gulden. “Impact of Drive Harmonics on the
Stability of Floquet Many-Body Localization.” Physical Review B. American
Physical Society, 2021. https://doi.org/10.1103/PhysRevB.103.214204.
ieee: A. A. Diringer and T. Gulden, “Impact of drive harmonics on the stability
of Floquet many-body localization,” Physical Review B, vol. 103, no. 21.
American Physical Society, 2021.
ista: Diringer AA, Gulden T. 2021. Impact of drive harmonics on the stability of
Floquet many-body localization. Physical Review B. 103(21), 214204.
mla: Diringer, Asaf A., and Tobias Gulden. “Impact of Drive Harmonics on the Stability
of Floquet Many-Body Localization.” Physical Review B, vol. 103, no. 21,
214204, American Physical Society, 2021, doi:10.1103/PhysRevB.103.214204.
short: A.A. Diringer, T. Gulden, Physical Review B 103 (2021).
date_created: 2020-08-04T13:03:40Z
date_published: 2021-06-21T00:00:00Z
date_updated: 2023-08-04T10:56:33Z
day: '21'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.103.214204
ec_funded: 1
external_id:
arxiv:
- '2007.14879'
isi:
- '000664429700005'
intvolume: ' 103'
isi: 1
issue: '21'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2007.14879
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review B
publication_identifier:
eissn:
- '24699969'
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Impact of drive harmonics on the stability of Floquet many-body localization
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 103
year: '2021'
...
---
_id: '9020'
abstract:
- lang: eng
text: 'We study dynamics and thermodynamics of ion transport in narrow, water-filled
channels, considered as effective 1D Coulomb systems. The long range nature of
the inter-ion interactions comes about due to the dielectric constants mismatch
between the water and the surrounding medium, confining the electric filed to
stay mostly within the water-filled channel. Statistical mechanics of such Coulomb
systems is dominated by entropic effects which may be accurately accounted for
by mapping onto an effective quantum mechanics. In presence of multivalent ions
the corresponding quantum mechanics appears to be non-Hermitian. In this review
we discuss a framework for semiclassical calculations for the effective non-Hermitian
Hamiltonians. Non-Hermiticity elevates WKB action integrals from the real line
to closed cycles on a complex Riemann surfaces where direct calculations are not
attainable. We circumvent this issue by applying tools from algebraic topology,
such as the Picard-Fuchs equation. We discuss how its solutions relate to the
thermodynamics and correlation functions of multivalent solutions within narrow,
water-filled channels. '
acknowledgement: "A.K. was supported by NSF grants DMR-2037654. T.G. acknowledges
funding from the Institute of Science and Technology (IST) Austria, and from the
European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie
Grant Agreement No. 754411.\r\nWe are indebted to Boris Shklovskii for introducing
us to the problem, and Alexander Gorsky and Peter Koroteev for introducing us to
the Picard-Fuchs methods. A very special thanks goes to Michael Janas for several
years of excellent collaboration on these topics. TG thanks Michael Kreshchuk for
introduction to the exact WKB method and great collaboration on related projects.
Figure 3 and Figure 4 are reproduced from Reference [25] with friendly permission
by the Russian Academy of Sciences. Figure 2, Figure 4, Figure 5, Figure 6, and
Figure 8 are reproduced from Reference [26] with friendly permission by IOP Publishing."
article_number: e23010125
article_processing_charge: Yes
article_type: original
author:
- first_name: Tobias
full_name: Gulden, Tobias
id: 1083E038-9F73-11E9-A4B5-532AE6697425
last_name: Gulden
orcid: 0000-0001-6814-7541
- first_name: Alex
full_name: Kamenev, Alex
last_name: Kamenev
citation:
ama: Gulden T, Kamenev A. Dynamics of ion channels via non-hermitian quantum mechanics.
Entropy. 2021;23(1). doi:10.3390/e23010125
apa: Gulden, T., & Kamenev, A. (2021). Dynamics of ion channels via non-hermitian
quantum mechanics. Entropy. MDPI. https://doi.org/10.3390/e23010125
chicago: Gulden, Tobias, and Alex Kamenev. “Dynamics of Ion Channels via Non-Hermitian
Quantum Mechanics.” Entropy. MDPI, 2021. https://doi.org/10.3390/e23010125.
ieee: T. Gulden and A. Kamenev, “Dynamics of ion channels via non-hermitian quantum
mechanics,” Entropy, vol. 23, no. 1. MDPI, 2021.
ista: Gulden T, Kamenev A. 2021. Dynamics of ion channels via non-hermitian quantum
mechanics. Entropy. 23(1), e23010125.
mla: Gulden, Tobias, and Alex Kamenev. “Dynamics of Ion Channels via Non-Hermitian
Quantum Mechanics.” Entropy, vol. 23, no. 1, e23010125, MDPI, 2021, doi:10.3390/e23010125.
short: T. Gulden, A. Kamenev, Entropy 23 (2021).
date_created: 2021-01-19T11:12:06Z
date_published: 2021-01-19T00:00:00Z
date_updated: 2023-08-07T13:34:18Z
day: '19'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.3390/e23010125
ec_funded: 1
external_id:
arxiv:
- '2012.01390'
isi:
- '000610122000001'
file:
- access_level: open_access
checksum: 6cd0e706156827c45c740534bd32c179
content_type: application/pdf
creator: tgulden
date_created: 2021-01-19T11:11:14Z
date_updated: 2021-01-19T11:11:14Z
file_id: '9021'
file_name: Final published paper.pdf
file_size: 981285
relation: main_file
file_date_updated: 2021-01-19T11:11:14Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Entropy
publication_identifier:
eissn:
- 1099-4300
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: Dynamics of ion channels via non-hermitian quantum mechanics
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 23
year: '2021'
...
---
_id: '9158'
abstract:
- lang: eng
text: While several tools have been developed to study the ground state of many-body
quantum spin systems, the limitations of existing techniques call for the exploration
of new approaches. In this manuscript we develop an alternative analytical and
numerical framework for many-body quantum spin ground states, based on the disentanglement
formalism. In this approach, observables are exactly expressed as Gaussian-weighted
functional integrals over scalar fields. We identify the leading contribution
to these integrals, given by the saddle point of a suitable effective action.
Analytically, we develop a field-theoretical expansion of the functional integrals,
performed by means of appropriate Feynman rules. The expansion can be truncated
to a desired order to obtain analytical approximations to observables. Numerically,
we show that the disentanglement approach can be used to compute ground state
expectation values from classical stochastic processes. While the associated fluctuations
grow exponentially with imaginary time and the system size, this growth can be
mitigated by means of an importance sampling scheme based on knowledge of the
saddle point configuration. We illustrate the advantages and limitations of our
methods by considering the quantum Ising model in 1, 2 and 3 spatial dimensions.
Our analytical and numerical approaches are applicable to a broad class of systems,
bridging concepts from quantum lattice models, continuum field theory, and classical
stochastic processes.
acknowledgement: "S D N would like to thank M J Bhaseen, J Chalker, B Doyon, V Gritsev,
A Lamacraft,\r\nA Michailidis and M Serbyn for helpful feedback and stimulating
conversations. S D N\r\nacknowledges funding from the Institute of Science and Technology
(IST) Austria, and\r\nfrom the European Union’s Horizon 2020 research and innovation
program under the\r\nMarie Sk\blodowska-Curie Grant Agreement No. 754411. S D N
also acknowledges funding\r\nfrom the EPSRC Center for Doctoral Training in Cross-Disciplinary
Approaches to Non-\r\nEquilibrium Systems (CANES) under Grant EP/L015854/1. S D
N is grateful to IST\r\nAustria for providing open access funding."
article_number: '013101'
article_processing_charge: No
article_type: original
author:
- first_name: Stefano
full_name: De Nicola, Stefano
id: 42832B76-F248-11E8-B48F-1D18A9856A87
last_name: De Nicola
orcid: 0000-0002-4842-6671
citation:
ama: 'De Nicola S. Disentanglement approach to quantum spin ground states: Field
theory and stochastic simulation. Journal of Statistical Mechanics: Theory
and Experiment. 2021;2021(1). doi:10.1088/1742-5468/abc7c7'
apa: 'De Nicola, S. (2021). Disentanglement approach to quantum spin ground states:
Field theory and stochastic simulation. Journal of Statistical Mechanics: Theory
and Experiment. IOP Publishing. https://doi.org/10.1088/1742-5468/abc7c7'
chicago: 'De Nicola, Stefano. “Disentanglement Approach to Quantum Spin Ground States:
Field Theory and Stochastic Simulation.” Journal of Statistical Mechanics:
Theory and Experiment. IOP Publishing, 2021. https://doi.org/10.1088/1742-5468/abc7c7.'
ieee: 'S. De Nicola, “Disentanglement approach to quantum spin ground states: Field
theory and stochastic simulation,” Journal of Statistical Mechanics: Theory
and Experiment, vol. 2021, no. 1. IOP Publishing, 2021.'
ista: 'De Nicola S. 2021. Disentanglement approach to quantum spin ground states:
Field theory and stochastic simulation. Journal of Statistical Mechanics: Theory
and Experiment. 2021(1), 013101.'
mla: 'De Nicola, Stefano. “Disentanglement Approach to Quantum Spin Ground States:
Field Theory and Stochastic Simulation.” Journal of Statistical Mechanics:
Theory and Experiment, vol. 2021, no. 1, 013101, IOP Publishing, 2021, doi:10.1088/1742-5468/abc7c7.'
short: 'S. De Nicola, Journal of Statistical Mechanics: Theory and Experiment 2021
(2021).'
date_created: 2021-02-17T17:48:46Z
date_published: 2021-01-05T00:00:00Z
date_updated: 2023-08-07T13:46:28Z
day: '05'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1088/1742-5468/abc7c7
ec_funded: 1
external_id:
isi:
- '000605080300001'
file:
- access_level: open_access
checksum: 64e2aae4837790db26e1dd1986c69c07
content_type: application/pdf
creator: dernst
date_created: 2021-02-19T14:04:40Z
date_updated: 2021-02-19T14:04:40Z
file_id: '9172'
file_name: 2021_JourStatMech_deNicola.pdf
file_size: 1693609
relation: main_file
success: 1
file_date_updated: 2021-02-19T14:04:40Z
has_accepted_license: '1'
intvolume: ' 2021'
isi: 1
issue: '1'
keyword:
- Statistics
- Probability and Uncertainty
- Statistics and Probability
- Statistical and Nonlinear Physics
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: 'Journal of Statistical Mechanics: Theory and Experiment'
publication_identifier:
issn:
- 1742-5468
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: 'Disentanglement approach to quantum spin ground states: Field theory and stochastic
simulation'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 2021
year: '2021'
...
---
_id: '9224'
abstract:
- lang: eng
text: We re-examine attempts to study the many-body localization transition using
measures that are physically natural on the ergodic/quantum chaotic regime of
the phase diagram. Using simple scaling arguments and an analysis of various models
for which rigorous results are available, we find that these measures can be particularly
adversely affected by the strong finite-size effects observed in nearly all numerical
studies of many-body localization. This severely impacts their utility in probing
the transition and the localized phase. In light of this analysis, we discuss
a recent study (Šuntajs et al., 2020) of the behaviour of the Thouless energy
and level repulsion in disordered spin chains, and its implications for the question
of whether MBL is a true phase of matter.
article_number: '168415'
article_processing_charge: No
article_type: original
author:
- first_name: D. A.
full_name: Abanin, D. A.
last_name: Abanin
- first_name: J. H.
full_name: Bardarson, J. H.
last_name: Bardarson
- first_name: G.
full_name: De Tomasi, G.
last_name: De Tomasi
- first_name: S.
full_name: Gopalakrishnan, S.
last_name: Gopalakrishnan
- first_name: V.
full_name: Khemani, V.
last_name: Khemani
- first_name: S. A.
full_name: Parameswaran, S. A.
last_name: Parameswaran
- first_name: F.
full_name: Pollmann, F.
last_name: Pollmann
- first_name: A. C.
full_name: Potter, A. C.
last_name: Potter
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: R.
full_name: Vasseur, R.
last_name: Vasseur
citation:
ama: 'Abanin DA, Bardarson JH, De Tomasi G, et al. Distinguishing localization from
chaos: Challenges in finite-size systems. Annals of Physics. 2021;427(4).
doi:10.1016/j.aop.2021.168415'
apa: 'Abanin, D. A., Bardarson, J. H., De Tomasi, G., Gopalakrishnan, S., Khemani,
V., Parameswaran, S. A., … Vasseur, R. (2021). Distinguishing localization from
chaos: Challenges in finite-size systems. Annals of Physics. Elsevier.
https://doi.org/10.1016/j.aop.2021.168415'
chicago: 'Abanin, D. A., J. H. Bardarson, G. De Tomasi, S. Gopalakrishnan, V. Khemani,
S. A. Parameswaran, F. Pollmann, A. C. Potter, Maksym Serbyn, and R. Vasseur.
“Distinguishing Localization from Chaos: Challenges in Finite-Size Systems.” Annals
of Physics. Elsevier, 2021. https://doi.org/10.1016/j.aop.2021.168415.'
ieee: 'D. A. Abanin et al., “Distinguishing localization from chaos: Challenges
in finite-size systems,” Annals of Physics, vol. 427, no. 4. Elsevier,
2021.'
ista: 'Abanin DA, Bardarson JH, De Tomasi G, Gopalakrishnan S, Khemani V, Parameswaran
SA, Pollmann F, Potter AC, Serbyn M, Vasseur R. 2021. Distinguishing localization
from chaos: Challenges in finite-size systems. Annals of Physics. 427(4), 168415.'
mla: 'Abanin, D. A., et al. “Distinguishing Localization from Chaos: Challenges
in Finite-Size Systems.” Annals of Physics, vol. 427, no. 4, 168415, Elsevier,
2021, doi:10.1016/j.aop.2021.168415.'
short: D.A. Abanin, J.H. Bardarson, G. De Tomasi, S. Gopalakrishnan, V. Khemani,
S.A. Parameswaran, F. Pollmann, A.C. Potter, M. Serbyn, R. Vasseur, Annals of
Physics 427 (2021).
date_created: 2021-03-07T23:01:25Z
date_published: 2021-04-01T00:00:00Z
date_updated: 2023-08-07T13:58:30Z
day: '01'
department:
- _id: MaSe
doi: 10.1016/j.aop.2021.168415
external_id:
arxiv:
- '1911.04501'
isi:
- '000634879800007'
intvolume: ' 427'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1911.04501
month: '04'
oa: 1
oa_version: Preprint
publication: Annals of Physics
publication_identifier:
eissn:
- 1096035X
issn:
- '00034916'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Distinguishing localization from chaos: Challenges in finite-size systems'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 427
year: '2021'
...
---
_id: '9618'
abstract:
- lang: eng
text: The control of nonequilibrium quantum dynamics in many-body systems is challenging
because interactions typically lead to thermalization and a chaotic spreading
throughout Hilbert space. We investigate nonequilibrium dynamics after rapid quenches
in a many-body system composed of 3 to 200 strongly interacting qubits in one
and two spatial dimensions. Using a programmable quantum simulator based on Rydberg
atom arrays, we show that coherent revivals associated with so-called quantum
many-body scars can be stabilized by periodic driving, which generates a robust
subharmonic response akin to discrete time-crystalline order. We map Hilbert space
dynamics, geometry dependence, phase diagrams, and system-size dependence of this
emergent phenomenon, demonstrating new ways to steer complex dynamics in many-body
systems and enabling potential applications in quantum information science.
acknowledgement: 'We thank many members of the Harvard AMO community, particularly
E. Urbach, S. Dakoulas, and J. Doyle for their efforts enabling safe and productive
operation of our laboratories during 2020. We thank D. Abanin, I. Cong, F. Machado,
H. Pichler, N. Yao, B. Ye, and H. Zhou for stimulating discussions. Funding: We
acknowledge financial support from the Center for Ultracold Atoms, the National
Science Foundation, the Vannevar Bush Faculty Fellowship, the U.S. Department of
Energy (LBNL QSA Center and grant no. DE-SC0021013), the Office of Naval Research,
the Army Research Office MURI, the DARPA DRINQS program (grant no. D18AC00033),
and the DARPA ONISQ program (grant no. W911NF2010021). The authors acknowledge support
from the NSF Graduate Research Fellowship Program (grant DGE1745303) and The Fannie
and John Hertz Foundation (D.B.); a National Defense Science and Engineering Graduate
(NDSEG) fellowship (H.L.); a fellowship from the Max Planck/Harvard Research Center
for Quantum Optics (G.S.); Gordon College (T.T.W.); the European Research Council
(ERC) under the European Union’s Horizon 2020 research and innovation program (grant
agreement no. 850899) (A.A.M. and M.S.); a Department of Energy Computational Science
Graduate Fellowship under award number DE-SC0021110 (N.M.); the Moore Foundation’s
EPiQS Initiative grant no. GBMF4306, the NUS Development grant AY2019/2020, and
the Stanford Institute of Theoretical Physics (W.W.H.); and the Miller Institute
for Basic Research in Science (S.C.). Author contributions: D.B., A.O., H.L., A.K.,
G.S., S.E., and T.T.W. contributed to the building of the experimental setup, performed
the measurements, and analyzed the data. A.A.M., N.M., W.W.H., S.C., and M.S. performed
theoretical analysis. All work was supervised by M.G., V.V., and M.D.L. All authors
discussed the results and contributed to the manuscript. Competing interests: M.G.,
V.V., and M.D.L. are co-founders and shareholders of QuEra Computing. A.O. is a
shareholder of QuEra Computing. Data and materials availability: All data needed
to evaluate the conclusions in the paper are present in the paper and the supplementary
materials.'
article_processing_charge: No
article_type: original
author:
- first_name: D.
full_name: Bluvstein, D.
last_name: Bluvstein
- first_name: A.
full_name: Omran, A.
last_name: Omran
- first_name: H.
full_name: Levine, H.
last_name: Levine
- first_name: A.
full_name: Keesling, A.
last_name: Keesling
- first_name: G.
full_name: Semeghini, G.
last_name: Semeghini
- first_name: S.
full_name: Ebadi, S.
last_name: Ebadi
- first_name: T. T.
full_name: Wang, T. T.
last_name: Wang
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: N.
full_name: Maskara, N.
last_name: Maskara
- first_name: W. W.
full_name: Ho, W. W.
last_name: Ho
- first_name: S.
full_name: Choi, S.
last_name: Choi
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: M.
full_name: Greiner, M.
last_name: Greiner
- first_name: V.
full_name: Vuletić, V.
last_name: Vuletić
- first_name: M. D.
full_name: Lukin, M. D.
last_name: Lukin
citation:
ama: Bluvstein D, Omran A, Levine H, et al. Controlling quantum many-body dynamics
in driven Rydberg atom arrays. Science. 2021;371(6536):1355-1359. doi:10.1126/science.abg2530
apa: Bluvstein, D., Omran, A., Levine, H., Keesling, A., Semeghini, G., Ebadi, S.,
… Lukin, M. D. (2021). Controlling quantum many-body dynamics in driven Rydberg
atom arrays. Science. AAAS. https://doi.org/10.1126/science.abg2530
chicago: Bluvstein, D., A. Omran, H. Levine, A. Keesling, G. Semeghini, S. Ebadi,
T. T. Wang, et al. “Controlling Quantum Many-Body Dynamics in Driven Rydberg Atom
Arrays.” Science. AAAS, 2021. https://doi.org/10.1126/science.abg2530.
ieee: D. Bluvstein et al., “Controlling quantum many-body dynamics in driven
Rydberg atom arrays,” Science, vol. 371, no. 6536. AAAS, pp. 1355–1359,
2021.
ista: Bluvstein D, Omran A, Levine H, Keesling A, Semeghini G, Ebadi S, Wang TT,
Michailidis A, Maskara N, Ho WW, Choi S, Serbyn M, Greiner M, Vuletić V, Lukin
MD. 2021. Controlling quantum many-body dynamics in driven Rydberg atom arrays.
Science. 371(6536), 1355–1359.
mla: Bluvstein, D., et al. “Controlling Quantum Many-Body Dynamics in Driven Rydberg
Atom Arrays.” Science, vol. 371, no. 6536, AAAS, 2021, pp. 1355–59, doi:10.1126/science.abg2530.
short: D. Bluvstein, A. Omran, H. Levine, A. Keesling, G. Semeghini, S. Ebadi, T.T.
Wang, A. Michailidis, N. Maskara, W.W. Ho, S. Choi, M. Serbyn, M. Greiner, V.
Vuletić, M.D. Lukin, Science 371 (2021) 1355–1359.
date_created: 2021-06-29T12:04:05Z
date_published: 2021-03-26T00:00:00Z
date_updated: 2023-08-10T13:57:07Z
day: '26'
ddc:
- '539'
department:
- _id: MaSe
doi: 10.1126/science.abg2530
ec_funded: 1
external_id:
arxiv:
- '2012.12276'
isi:
- '000636043400048'
pmid:
- '33632894'
file:
- access_level: open_access
checksum: 0b356fd10ab9bb95177d4c047d4e9c1a
content_type: application/pdf
creator: patrickd
date_created: 2021-09-23T14:00:05Z
date_updated: 2021-09-23T14:00:05Z
file_id: '10040'
file_name: scars_subharmonic_combined_manuscript_2_11_2021 (2)-1.pdf
file_size: 3671159
relation: main_file
success: 1
file_date_updated: 2021-09-23T14:00:05Z
has_accepted_license: '1'
intvolume: ' 371'
isi: 1
issue: '6536'
keyword:
- Multidisciplinary
language:
- iso: eng
month: '03'
oa: 1
oa_version: Preprint
page: 1355-1359
pmid: 1
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: AAAS
quality_controlled: '1'
scopus_import: '1'
status: public
title: Controlling quantum many-body dynamics in driven Rydberg atom arrays
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 371
year: '2021'
...
---
_id: '9903'
abstract:
- lang: eng
text: Eigenstate thermalization in quantum many-body systems implies that eigenstates
at high energy are similar to random vectors. Identifying systems where at least
some eigenstates are nonthermal is an outstanding question. In this Letter we
show that interacting quantum models that have a nullspace—a degenerate subspace
of eigenstates at zero energy (zero modes), which corresponds to infinite temperature,
provide a route to nonthermal eigenstates. We analytically show the existence
of a zero mode which can be represented as a matrix product state for a certain
class of local Hamiltonians. In the more general case we use a subspace disentangling
algorithm to generate an orthogonal basis of zero modes characterized by increasing
entanglement entropy. We show evidence for an area-law entanglement scaling of
the least-entangled zero mode in the broad parameter regime, leading to a conjecture
that all local Hamiltonians with the nullspace feature zero modes with area-law
entanglement scaling and, as such, break the strong thermalization hypothesis.
Finally, we find zero modes in constrained models and propose a setup for observing
their experimental signatures.
acknowledgement: "We acknowledge useful discussions with V. Gritsev and A. Garkun
and suggestions on implementation of the\r\nPPXPP model by D. Bluvstein. A. M. and
M. S. were supported by the European Research Council (ERC) under\r\nthe European
Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899)"
article_number: '060602'
article_processing_charge: Yes (in subscription journal)
article_type: letter_note
author:
- first_name: Volker
full_name: Karle, Volker
id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
last_name: Karle
orcid: 0000-0002-6963-0129
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
citation:
ama: Karle V, Serbyn M, Michailidis A. Area-law entangled eigenstates from nullspaces
of local Hamiltonians. Physical Review Letters. 2021;127(6). doi:10.1103/physrevlett.127.060602
apa: Karle, V., Serbyn, M., & Michailidis, A. (2021). Area-law entangled eigenstates
from nullspaces of local Hamiltonians. Physical Review Letters. American
Physical Society. https://doi.org/10.1103/physrevlett.127.060602
chicago: Karle, Volker, Maksym Serbyn, and Alexios Michailidis. “Area-Law Entangled
Eigenstates from Nullspaces of Local Hamiltonians.” Physical Review Letters.
American Physical Society, 2021. https://doi.org/10.1103/physrevlett.127.060602.
ieee: V. Karle, M. Serbyn, and A. Michailidis, “Area-law entangled eigenstates from
nullspaces of local Hamiltonians,” Physical Review Letters, vol. 127, no.
6. American Physical Society, 2021.
ista: Karle V, Serbyn M, Michailidis A. 2021. Area-law entangled eigenstates from
nullspaces of local Hamiltonians. Physical Review Letters. 127(6), 060602.
mla: Karle, Volker, et al. “Area-Law Entangled Eigenstates from Nullspaces of Local
Hamiltonians.” Physical Review Letters, vol. 127, no. 6, 060602, American
Physical Society, 2021, doi:10.1103/physrevlett.127.060602.
short: V. Karle, M. Serbyn, A. Michailidis, Physical Review Letters 127 (2021).
date_created: 2021-08-13T09:27:39Z
date_published: 2021-08-06T00:00:00Z
date_updated: 2023-08-11T10:43:27Z
day: '06'
ddc:
- '539'
department:
- _id: MaSe
- _id: GradSch
- _id: MiLe
doi: 10.1103/physrevlett.127.060602
ec_funded: 1
external_id:
arxiv:
- '2102.13633'
isi:
- '000684276000002'
file:
- access_level: open_access
checksum: 51218f302dcef99d90d1209809fcc874
content_type: application/pdf
creator: mserbyn
date_created: 2021-08-13T09:28:08Z
date_updated: 2021-08-13T09:28:08Z
file_id: '9904'
file_name: PhysRevLett.127.060602_SOM.pdf
file_size: 5064231
relation: main_file
success: 1
file_date_updated: 2021-08-13T09:28:08Z
has_accepted_license: '1'
intvolume: ' 127'
isi: 1
issue: '6'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Area-law entangled eigenstates from nullspaces of local Hamiltonians
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 127
year: '2021'
...
---
_id: '9981'
abstract:
- lang: eng
text: "The numerical simulation of dynamical phenomena in interacting quantum systems
is a notoriously hard problem. Although a number of promising numerical methods
exist, they often have limited applicability due to the growth of entanglement
or the presence of the so-called sign problem. In this work, we develop an importance
sampling scheme for the simulation of quantum spin dynamics, building on a recent
approach mapping quantum spin systems to classical stochastic processes. The importance
sampling scheme is based on identifying the classical trajectory that yields the
largest contribution to a given quantum observable. An exact transformation is
then carried out to preferentially sample trajectories that are close to the dominant
one. We demonstrate that this approach is capable of reducing the temporal growth
of fluctuations in the stochastic quantities, thus extending the range of accessible
times and system sizes compared to direct sampling. We discuss advantages and
limitations of the proposed approach, outlining directions\r\nfor further developments."
article_number: '048'
article_processing_charge: No
article_type: original
author:
- first_name: Stefano
full_name: De Nicola, Stefano
id: 42832B76-F248-11E8-B48F-1D18A9856A87
last_name: De Nicola
orcid: 0000-0002-4842-6671
citation:
ama: De Nicola S. Importance sampling scheme for the stochastic simulation of quantum
spin dynamics. SciPost Physics. 2021;11(3). doi:10.21468/scipostphys.11.3.048
apa: De Nicola, S. (2021). Importance sampling scheme for the stochastic simulation
of quantum spin dynamics. SciPost Physics. SciPost. https://doi.org/10.21468/scipostphys.11.3.048
chicago: De Nicola, Stefano. “Importance Sampling Scheme for the Stochastic Simulation
of Quantum Spin Dynamics.” SciPost Physics. SciPost, 2021. https://doi.org/10.21468/scipostphys.11.3.048.
ieee: S. De Nicola, “Importance sampling scheme for the stochastic simulation of
quantum spin dynamics,” SciPost Physics, vol. 11, no. 3. SciPost, 2021.
ista: De Nicola S. 2021. Importance sampling scheme for the stochastic simulation
of quantum spin dynamics. SciPost Physics. 11(3), 048.
mla: De Nicola, Stefano. “Importance Sampling Scheme for the Stochastic Simulation
of Quantum Spin Dynamics.” SciPost Physics, vol. 11, no. 3, 048, SciPost,
2021, doi:10.21468/scipostphys.11.3.048.
short: S. De Nicola, SciPost Physics 11 (2021).
date_created: 2021-09-02T11:49:47Z
date_published: 2021-09-02T00:00:00Z
date_updated: 2023-08-11T10:59:29Z
day: '02'
ddc:
- '519'
department:
- _id: MaSe
doi: 10.21468/scipostphys.11.3.048
ec_funded: 1
external_id:
arxiv:
- '2103.16468'
isi:
- '000692534200001'
file:
- access_level: open_access
checksum: e4ec69d893e31811efc6093cb6ea8eb7
content_type: application/pdf
creator: cchlebak
date_created: 2021-09-02T14:05:43Z
date_updated: 2021-09-02T14:05:43Z
file_id: '9984'
file_name: 2021_SciPostPhys_DeNicola.pdf
file_size: 373833
relation: main_file
success: 1
file_date_updated: 2021-09-02T14:05:43Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
issue: '3'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: SciPost Physics
publication_identifier:
eissn:
- 2666-9366
issn:
- 2542-4653
publication_status: published
publisher: SciPost
quality_controlled: '1'
status: public
title: Importance sampling scheme for the stochastic simulation of quantum spin dynamics
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2021'
...
---
_id: '9960'
abstract:
- lang: eng
text: The control of many-body quantum dynamics in complex systems is a key challenge
in the quest to reliably produce and manipulate large-scale quantum entangled
states. Recently, quench experiments in Rydberg atom arrays [Bluvstein et al.
Science 371, 1355 (2021)] demonstrated that coherent revivals associated with
quantum many-body scars can be stabilized by periodic driving, generating stable
subharmonic responses over a wide parameter regime. We analyze a simple, related
model where these phenomena originate from spatiotemporal ordering in an effective
Floquet unitary, corresponding to discrete time-crystalline behavior in a prethermal
regime. Unlike conventional discrete time crystals, the subharmonic response exists
only for Néel-like initial states, associated with quantum scars. We predict robustness
to perturbations and identify emergent timescales that could be observed in future
experiments. Our results suggest a route to controlling entanglement in interacting
quantum systems by combining periodic driving with many-body scars.
acknowledgement: We thank Dmitry Abanin, Ehud Altman, Iris Cong, Sepehr Ebadi, Alex
Keesling, Harry Levine, Ahmed Omran, Hannes Pichler, Rhine Samajdar, Guilia Semeghini,
Tout Wang, Norman Yao, and Harry Zhou or stimulating discussions. We acknowledge
support from the Center for Ultracold Atoms, the National Science Foundation, the
Vannevar Bush Faculty Fellowship, the U.S. Department of Energy, the Army Research
Office MURI, and the DARPA ONISQ program (M. L., N. M, W. W. H., D. B.); the European
Research Council (ERC) under the European Union’s Horizon 2020 Research and Innovation
Programme Grant Agreement No. 850899 (A. M. and M. S.); the Department of Energy
Computational Science Graduate Fellowship under Awards No. DESC0021110 (N. M.);
the Moore Foundation EPiQS initiative Grant No. GBMF4306, the National University
of Singapore (NUS) Development Grant AY2019/2020 and the Stanford Institute for
Theoretical Physics (W. W. H.); the NSF Graduate Research Fellowship Program (Grant
No. DGE1745303) and The Fannie and John Hertz Foundation (D. B.); the Miller Institute
for Basic Research in Science (S. C.); DOE Quantum Systems Accelerator – Contract
No. 7568717; and DOE Programmable Quantum Simulators for Lattice Gauge Theories
and Gauge-Gravity Correspondence – Grant No. DE-SC0021013.
article_number: '090602'
article_processing_charge: No
article_type: letter_note
author:
- first_name: N.
full_name: Maskara, N.
last_name: Maskara
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: W. W.
full_name: Ho, W. W.
last_name: Ho
- first_name: D.
full_name: Bluvstein, D.
last_name: Bluvstein
- first_name: S.
full_name: Choi, S.
last_name: Choi
- first_name: M. D.
full_name: Lukin, M. D.
last_name: Lukin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: 'Maskara N, Michailidis A, Ho WW, et al. Discrete time-crystalline order enabled
by quantum many-body scars: Entanglement steering via periodic driving. Physical
Review Letters. 2021;127(9). doi:10.1103/PhysRevLett.127.090602'
apa: 'Maskara, N., Michailidis, A., Ho, W. W., Bluvstein, D., Choi, S., Lukin, M.
D., & Serbyn, M. (2021). Discrete time-crystalline order enabled by quantum
many-body scars: Entanglement steering via periodic driving. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.127.090602'
chicago: 'Maskara, N., Alexios Michailidis, W. W. Ho, D. Bluvstein, S. Choi, M.
D. Lukin, and Maksym Serbyn. “Discrete Time-Crystalline Order Enabled by Quantum
Many-Body Scars: Entanglement Steering via Periodic Driving.” Physical Review
Letters. American Physical Society, 2021. https://doi.org/10.1103/PhysRevLett.127.090602.'
ieee: 'N. Maskara et al., “Discrete time-crystalline order enabled by quantum
many-body scars: Entanglement steering via periodic driving,” Physical Review
Letters, vol. 127, no. 9. American Physical Society, 2021.'
ista: 'Maskara N, Michailidis A, Ho WW, Bluvstein D, Choi S, Lukin MD, Serbyn M.
2021. Discrete time-crystalline order enabled by quantum many-body scars: Entanglement
steering via periodic driving. Physical Review Letters. 127(9), 090602.'
mla: 'Maskara, N., et al. “Discrete Time-Crystalline Order Enabled by Quantum Many-Body
Scars: Entanglement Steering via Periodic Driving.” Physical Review Letters,
vol. 127, no. 9, 090602, American Physical Society, 2021, doi:10.1103/PhysRevLett.127.090602.'
short: N. Maskara, A. Michailidis, W.W. Ho, D. Bluvstein, S. Choi, M.D. Lukin, M.
Serbyn, Physical Review Letters 127 (2021).
date_created: 2021-08-28T08:08:58Z
date_published: 2021-08-27T00:00:00Z
date_updated: 2023-08-11T10:57:51Z
day: '27'
department:
- _id: MaSe
doi: 10.1103/PhysRevLett.127.090602
ec_funded: 1
external_id:
arxiv:
- '2102.13160'
isi:
- '000692200100002'
intvolume: ' 127'
isi: 1
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2102.13160
month: '08'
oa: 1
oa_version: Submitted Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: 'Discrete time-crystalline order enabled by quantum many-body scars: Entanglement
steering via periodic driving'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 127
year: '2021'
...
---
_id: '9961'
abstract:
- lang: eng
text: The notion of Thouless energy plays a central role in the theory of Anderson
localization. We investigate and compare the scaling of Thouless energy across
the many-body localization (MBL) transition in a Floquet model. We use a combination
of methods that are reliable on the ergodic side of the transition (e.g., spectral
form factor) and methods that work on the MBL side (e.g., typical matrix elements
of local operators) to obtain a complete picture of the Thouless energy behavior
across the transition. On the ergodic side, Thouless energy decreases slowly with
the system size, while at the transition it becomes comparable to the level spacing.
Different probes yield consistent estimates of Thouless energy in their overlapping
regime of applicability, giving the location of the transition point nearly free
of finite-size drift. This work establishes a connection between different definitions
of Thouless energy in a many-body setting and yields insights into the MBL transition
in Floquet systems.
acknowledgement: "We thank S. Garratt for useful comments on the manuscript. This
work was supported by the Swiss National Science Foundation (M. Sonner and D.A.A.)
and by the European Research Council (ERC) under the European Union’s Horizon 2020
research and innovation program (M. Serbyn, Grant Agreement No. 850899, and D.A.A.,
Grant Agreement No. 864597). Z.P. acknowledges support from EPSRC Grant No. EP/R020612/1
and from Leverhulme Trust Research Leadership Award No. RL-2019-015. The computations
were performed on the Baobab cluster of the University\r\nof Geneva."
article_number: L081112
article_processing_charge: No
article_type: letter_note
author:
- first_name: Michael
full_name: Sonner, Michael
last_name: Sonner
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
citation:
ama: Sonner M, Serbyn M, Papić Z, Abanin DA. Thouless energy across the many-body
localization transition in Floquet systems. Physical Review B. 2021;104(8).
doi:10.1103/PhysRevB.104.L081112
apa: Sonner, M., Serbyn, M., Papić, Z., & Abanin, D. A. (2021). Thouless energy
across the many-body localization transition in Floquet systems. Physical Review
B. American Physical Society. https://doi.org/10.1103/PhysRevB.104.L081112
chicago: Sonner, Michael, Maksym Serbyn, Zlatko Papić, and Dmitry A. Abanin. “Thouless
Energy across the Many-Body Localization Transition in Floquet Systems.” Physical
Review B. American Physical Society, 2021. https://doi.org/10.1103/PhysRevB.104.L081112.
ieee: M. Sonner, M. Serbyn, Z. Papić, and D. A. Abanin, “Thouless energy across
the many-body localization transition in Floquet systems,” Physical Review
B, vol. 104, no. 8. American Physical Society, 2021.
ista: Sonner M, Serbyn M, Papić Z, Abanin DA. 2021. Thouless energy across the many-body
localization transition in Floquet systems. Physical Review B. 104(8), L081112.
mla: Sonner, Michael, et al. “Thouless Energy across the Many-Body Localization
Transition in Floquet Systems.” Physical Review B, vol. 104, no. 8, L081112,
American Physical Society, 2021, doi:10.1103/PhysRevB.104.L081112.
short: M. Sonner, M. Serbyn, Z. Papić, D.A. Abanin, Physical Review B 104 (2021).
date_created: 2021-08-28T16:44:55Z
date_published: 2021-08-15T00:00:00Z
date_updated: 2023-08-11T10:57:09Z
day: '15'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.104.L081112
ec_funded: 1
external_id:
arxiv:
- '2012.15676'
isi:
- '000689734500009'
intvolume: ' 104'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2012.15676
month: '08'
oa: 1
oa_version: Submitted Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Thouless energy across the many-body localization transition in Floquet systems
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...
---
_id: '10025'
abstract:
- lang: eng
text: Ferromagnetism is most common in transition metal compounds but may also arise
in low-density two-dimensional electron systems, with signatures observed in silicon,
III-V semiconductor systems, and graphene moiré heterostructures. Here we show
that gate-tuned van Hove singularities in rhombohedral trilayer graphene drive
the spontaneous ferromagnetic polarization of the electron system into one or
more spin- and valley flavors. Using capacitance measurements on graphite-gated
van der Waals heterostructures, we find a cascade of density- and electronic displacement
field tuned phase transitions marked by negative electronic compressibility. The
transitions define the boundaries between phases where quantum oscillations have
either four-fold, two-fold, or one-fold degeneracy, associated with a spin and
valley degenerate normal metal, spin-polarized `half-metal', and spin and valley
polarized `quarter metal', respectively. For electron doping, the salient features
are well captured by a phenomenological Stoner model with a valley-anisotropic
Hund's coupling, likely arising from interactions at the lattice scale. For hole
filling, we observe a richer phase diagram featuring a delicate interplay of broken
symmetries and transitions in the Fermi surface topology. Finally, by rotational
alignment of a hexagonal boron nitride substrate to induce a moiré superlattice,
we find that the superlattice perturbs the preexisting isospin order only weakly,
leaving the basic phase diagram intact while catalyzing the formation of topologically
nontrivial gapped states whenever itinerant half- or quarter metal states occur
at half- or quarter superlattice band filling. Our results show that rhombohedral
trilayer graphene is an ideal platform for well-controlled tests of many-body
theory and reveal magnetism in moiré materials to be fundamentally itinerant in
nature.
acknowledgement: "The authors acknowledge discussions with A. Macdonald, L. Fu, F.
Wang and M. Zaletel. AFY acknowledges support of the National Science Foundation
under DMR1654186, and the Gordon and Betty Moore Foundation under award GBMF9471.
The authors acknowledge the use of the research facilities within the California
NanoSystems Institute, supported by the University of California, Santa Barbara
and the University of California, Office of the President.\r\nK.W. and T.T. acknowledge
support from the Elemental Strategy Initiative conducted by the MEXT, Japan, Grant
Number JPMXP0112101001 and JSPS KAKENHI, Grant Number JP20H00354. EB and TH were
supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement
No. 817799). A.G. acknowledges support by the European Unions Horizon 2020 research
and innovation program under the Marie Sklodowska-Curie Grant Agreement\r\nNo. 754411.\r\n"
article_processing_charge: No
article_type: original
author:
- first_name: Haoxin
full_name: Zhou, Haoxin
last_name: Zhou
- first_name: Tian
full_name: Xie, Tian
last_name: Xie
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Tobias
full_name: Holder, Tobias
last_name: Holder
- first_name: James R.
full_name: Ehrets, James R.
last_name: Ehrets
- first_name: Eric M.
full_name: Spanton, Eric M.
last_name: Spanton
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Erez
full_name: Berg, Erez
last_name: Berg
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Andrea F.
full_name: Young, Andrea F.
last_name: Young
citation:
ama: Zhou H, Xie T, Ghazaryan A, et al. Half and quarter metals in rhombohedral
trilayer graphene. Nature. 2021. doi:10.1038/s41586-021-03938-w
apa: Zhou, H., Xie, T., Ghazaryan, A., Holder, T., Ehrets, J. R., Spanton, E. M.,
… Young, A. F. (2021). Half and quarter metals in rhombohedral trilayer graphene.
Nature. Springer Nature. https://doi.org/10.1038/s41586-021-03938-w
chicago: Zhou, Haoxin, Tian Xie, Areg Ghazaryan, Tobias Holder, James R. Ehrets,
Eric M. Spanton, Takashi Taniguchi, et al. “Half and Quarter Metals in Rhombohedral
Trilayer Graphene.” Nature. Springer Nature, 2021. https://doi.org/10.1038/s41586-021-03938-w.
ieee: H. Zhou et al., “Half and quarter metals in rhombohedral trilayer graphene,”
Nature. Springer Nature, 2021.
ista: Zhou H, Xie T, Ghazaryan A, Holder T, Ehrets JR, Spanton EM, Taniguchi T,
Watanabe K, Berg E, Serbyn M, Young AF. 2021. Half and quarter metals in rhombohedral
trilayer graphene. Nature.
mla: Zhou, Haoxin, et al. “Half and Quarter Metals in Rhombohedral Trilayer Graphene.”
Nature, Springer Nature, 2021, doi:10.1038/s41586-021-03938-w.
short: H. Zhou, T. Xie, A. Ghazaryan, T. Holder, J.R. Ehrets, E.M. Spanton, T. Taniguchi,
K. Watanabe, E. Berg, M. Serbyn, A.F. Young, Nature (2021).
date_created: 2021-09-19T22:01:25Z
date_published: 2021-09-01T00:00:00Z
date_updated: 2023-08-14T07:04:06Z
day: '01'
department:
- _id: MaSe
- _id: MiLe
doi: 10.1038/s41586-021-03938-w
ec_funded: 1
external_id:
arxiv:
- '2104.00653'
isi:
- '000706977400002'
isi: 1
keyword:
- condensed matter - mesoscale and nanoscale physics
- condensed matter - strongly correlated electrons
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2104.00653
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41586-021-04181-z
scopus_import: '1'
status: public
title: Half and quarter metals in rhombohedral trilayer graphene
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
year: '2021'
...
---
_id: '10067'
abstract:
- lang: eng
text: The search for novel entangled phases of matter has lead to the recent discovery
of a new class of “entanglement transitions,” exemplified by random tensor networks
and monitored quantum circuits. Most known examples can be understood as some
classical ordering transitions in an underlying statistical mechanics model, where
entanglement maps onto the free-energy cost of inserting a domain wall. In this
paper we study the possibility of entanglement transitions driven by physics beyond
such statistical mechanics mappings. Motivated by recent applications of neural-network-inspired
variational Ansätze, we investigate under what conditions on the variational parameters
these Ansätze can capture an entanglement transition. We study the entanglement
scaling of short-range restricted Boltzmann machine (RBM) quantum states with
random phases. For uncorrelated random phases, we analytically demonstrate the
absence of an entanglement transition and reveal subtle finite-size effects in
finite-size numerical simulations. Introducing phases with correlations decaying
as 1/r^α in real space, we observe three regions with a different scaling of entanglement
entropy depending on the exponent α. We study the nature of the transition between
these regions, finding numerical evidence for critical behavior. Our work establishes
the presence of long-range correlated phases in RBM-based wave functions as a
required ingredient for entanglement transitions.
acknowledgement: We would like to thank S. De Nicola, P. Brighi, and V. Karle for
fruitful discussions and valuable feedback on the manuscript. R.M. and M.S. acknowledge
support by the European Research Council (ERC) under the European Union's Horizon
2020 research and innovation program (Grant Agreement No. 850899). R.V. acknowledges
support from the US Department of Energy, Office of Science, Basic Energy Sciences,
under Early Career Award No. DE-SC0019168, and the Alfred P. Sloan Foundation through
a Sloan Research Fellowship.
article_number: '104205'
article_processing_charge: No
article_type: original
author:
- first_name: Raimel A
full_name: Medina Ramos, Raimel A
id: CE680B90-D85A-11E9-B684-C920E6697425
last_name: Medina Ramos
orcid: 0000-0002-5383-2869
- first_name: Romain
full_name: Vasseur, Romain
last_name: Vasseur
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Medina Ramos RA, Vasseur R, Serbyn M. Entanglement transitions from restricted
Boltzmann machines. Physical Review B. 2021;104(10). doi:10.1103/physrevb.104.104205
apa: Medina Ramos, R. A., Vasseur, R., & Serbyn, M. (2021). Entanglement transitions
from restricted Boltzmann machines. Physical Review B. American Physical
Society. https://doi.org/10.1103/physrevb.104.104205
chicago: Medina Ramos, Raimel A, Romain Vasseur, and Maksym Serbyn. “Entanglement
Transitions from Restricted Boltzmann Machines.” Physical Review B. American
Physical Society, 2021. https://doi.org/10.1103/physrevb.104.104205.
ieee: R. A. Medina Ramos, R. Vasseur, and M. Serbyn, “Entanglement transitions from
restricted Boltzmann machines,” Physical Review B, vol. 104, no. 10. American
Physical Society, 2021.
ista: Medina Ramos RA, Vasseur R, Serbyn M. 2021. Entanglement transitions from
restricted Boltzmann machines. Physical Review B. 104(10), 104205.
mla: Medina Ramos, Raimel A., et al. “Entanglement Transitions from Restricted Boltzmann
Machines.” Physical Review B, vol. 104, no. 10, 104205, American Physical
Society, 2021, doi:10.1103/physrevb.104.104205.
short: R.A. Medina Ramos, R. Vasseur, M. Serbyn, Physical Review B 104 (2021).
date_created: 2021-10-02T09:03:42Z
date_published: 2021-09-30T00:00:00Z
date_updated: 2023-08-14T07:24:47Z
day: '30'
department:
- _id: MaSe
doi: 10.1103/physrevb.104.104205
ec_funded: 1
external_id:
arxiv:
- '2107.05735'
isi:
- '000704414400002'
intvolume: ' 104'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2107.05735
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Entanglement transitions from restricted Boltzmann machines
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...
---
_id: '10527'
abstract:
- lang: eng
text: We show that in a two-dimensional electron gas with an annular Fermi surface,
long-range Coulomb interactions can lead to unconventional superconductivity by
the Kohn-Luttinger mechanism. Superconductivity is strongly enhanced when the
inner and outer Fermi surfaces are close to each other. The most prevalent state
has chiral p-wave symmetry, but d-wave and extended s-wave pairing are also possible.
We discuss these results in the context of rhombohedral trilayer graphene, where
superconductivity was recently discovered in regimes where the normal state has
an annular Fermi surface. Using realistic parameters, our mechanism can account
for the order of magnitude of Tc, as well as its trends as a function of electron
density and perpendicular displacement field. Moreover, it naturally explains
some of the outstanding puzzles in this material, that include the weak temperature
dependence of the resistivity above Tc, and the proximity of spin singlet superconductivity
to the ferromagnetic phase.
acknowledgement: We thank Yang-Zhi Chou, Andrey Chubukov, Johannes Hofmann, Steve
Kivelson, Sri Raghu, and Sankar das Sarma, Jay Sau, Fengcheng Wu, and Andrea Young
for many stimulating discussions and for their comments on the manuscript. E.B.
thanks S. Chatterjee, T. Wang, and M. Zaletel for a collaboration on a related topic.
A.G. acknowledges support by the European Unions Horizon 2020 research and innovation
program under the Marie Sklodowska-Curie Grant Agreement No. 754411. E.B. and T.H.
were supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement
No. 817799), by the Israel-USA Binational Science Foundation (BSF), and by a Research
grant from Irving and Cherna Moskowitz.
article_number: '247001'
article_processing_charge: No
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Tobias
full_name: Holder, Tobias
last_name: Holder
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Erez
full_name: Berg, Erez
last_name: Berg
citation:
ama: 'Ghazaryan A, Holder T, Serbyn M, Berg E. Unconventional superconductivity
in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene.
Physical Review Letters. 2021;127(24). doi:10.1103/physrevlett.127.247001'
apa: 'Ghazaryan, A., Holder, T., Serbyn, M., & Berg, E. (2021). Unconventional
superconductivity in systems with annular Fermi surfaces: Application to rhombohedral
trilayer graphene. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/physrevlett.127.247001'
chicago: 'Ghazaryan, Areg, Tobias Holder, Maksym Serbyn, and Erez Berg. “Unconventional
Superconductivity in Systems with Annular Fermi Surfaces: Application to Rhombohedral
Trilayer Graphene.” Physical Review Letters. American Physical Society,
2021. https://doi.org/10.1103/physrevlett.127.247001.'
ieee: 'A. Ghazaryan, T. Holder, M. Serbyn, and E. Berg, “Unconventional superconductivity
in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene,”
Physical Review Letters, vol. 127, no. 24. American Physical Society, 2021.'
ista: 'Ghazaryan A, Holder T, Serbyn M, Berg E. 2021. Unconventional superconductivity
in systems with annular Fermi surfaces: Application to rhombohedral trilayer graphene.
Physical Review Letters. 127(24), 247001.'
mla: 'Ghazaryan, Areg, et al. “Unconventional Superconductivity in Systems with
Annular Fermi Surfaces: Application to Rhombohedral Trilayer Graphene.” Physical
Review Letters, vol. 127, no. 24, 247001, American Physical Society, 2021,
doi:10.1103/physrevlett.127.247001.'
short: A. Ghazaryan, T. Holder, M. Serbyn, E. Berg, Physical Review Letters 127
(2021).
date_created: 2021-12-10T07:51:33Z
date_published: 2021-12-09T00:00:00Z
date_updated: 2023-08-14T13:19:13Z
day: '09'
department:
- _id: MaSe
doi: 10.1103/physrevlett.127.247001
ec_funded: 1
external_id:
arxiv:
- '2109.00011'
isi:
- '000923819400004'
intvolume: ' 127'
isi: 1
issue: '24'
keyword:
- general physics and astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2109.00011
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on IST Webpage
relation: press_release
url: https://ist.ac.at/en/news/resolving-the-puzzles-of-graphene-superconductivity/
scopus_import: '1'
status: public
title: 'Unconventional superconductivity in systems with annular Fermi surfaces: Application
to rhombohedral trilayer graphene'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 127
year: '2021'
...
---
_id: '10545'
abstract:
- lang: eng
text: Classical models with complex energy landscapes represent a perspective avenue
for the near-term application of quantum simulators. Until now, many theoretical
works studied the performance of quantum algorithms for models with a unique ground
state. However, when the classical problem is in a so-called clustering phase,
the ground state manifold is highly degenerate. As an example, we consider a 3-XORSAT
model defined on simple hypergraphs. The degeneracy of classical ground state
manifold translates into the emergence of an extensive number of Z2 symmetries,
which remain intact even in the presence of a quantum transverse magnetic field.
We establish a general duality approach that restricts the quantum problem to
a given sector of conserved Z2 charges and use it to study how the outcome of
the quantum adiabatic algorithm depends on the hypergraph geometry. We show that
the tree hypergraph which corresponds to a classically solvable instance of the
3-XORSAT problem features a constant gap, whereas the closed hypergraph encounters
a second-order phase transition with a gap vanishing as a power-law in the problem
size. The duality developed in this work provides a practical tool for studies
of quantum models with classically degenerate energy manifold and reveals potential
connections between glasses and gauge theories.
acknowledgement: We would like to thank S. De Nicola, A. Michaidilis, T. Gulden, Y.
Nez-Fernndez, P. Brighi, and S. Sack for fruitful discussions and valuable feedback
on the manuscript. M.S. acknowledges useful discussions with E. Altman, L. Cugliandolo,
and C. Laumann. We acknowledge support from the European Research Council (ERC)
under the European Union's Horizon 2020 Research and Innovation Programme Grant
Agreement No. 850899.
article_number: '062423'
article_processing_charge: No
article_type: original
author:
- first_name: Raimel A
full_name: Medina Ramos, Raimel A
id: CE680B90-D85A-11E9-B684-C920E6697425
last_name: Medina Ramos
orcid: 0000-0002-5383-2869
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Medina Ramos RA, Serbyn M. Duality approach to quantum annealing of the 3-variable
exclusive-or satisfiability problem (3-XORSAT). Physical Review A. 2021;104(6).
doi:10.1103/physreva.104.062423
apa: Medina Ramos, R. A., & Serbyn, M. (2021). Duality approach to quantum annealing
of the 3-variable exclusive-or satisfiability problem (3-XORSAT). Physical
Review A. American Physical Society. https://doi.org/10.1103/physreva.104.062423
chicago: Medina Ramos, Raimel A, and Maksym Serbyn. “Duality Approach to Quantum
Annealing of the 3-Variable Exclusive-or Satisfiability Problem (3-XORSAT).” Physical
Review A. American Physical Society, 2021. https://doi.org/10.1103/physreva.104.062423.
ieee: R. A. Medina Ramos and M. Serbyn, “Duality approach to quantum annealing of
the 3-variable exclusive-or satisfiability problem (3-XORSAT),” Physical Review
A, vol. 104, no. 6. American Physical Society, 2021.
ista: Medina Ramos RA, Serbyn M. 2021. Duality approach to quantum annealing of
the 3-variable exclusive-or satisfiability problem (3-XORSAT). Physical Review
A. 104(6), 062423.
mla: Medina Ramos, Raimel A., and Maksym Serbyn. “Duality Approach to Quantum Annealing
of the 3-Variable Exclusive-or Satisfiability Problem (3-XORSAT).” Physical
Review A, vol. 104, no. 6, 062423, American Physical Society, 2021, doi:10.1103/physreva.104.062423.
short: R.A. Medina Ramos, M. Serbyn, Physical Review A 104 (2021).
date_created: 2021-12-14T20:46:07Z
date_published: 2021-12-14T00:00:00Z
date_updated: 2023-08-17T06:22:49Z
day: '14'
department:
- _id: MaSe
doi: 10.1103/physreva.104.062423
ec_funded: 1
external_id:
arxiv:
- '2106.06344'
isi:
- '000753659200004'
intvolume: ' 104'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2106.06344
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Duality approach to quantum annealing of the 3-variable exclusive-or satisfiability
problem (3-XORSAT)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...
---
_id: '9048'
abstract:
- lang: eng
text: The analogy between an equilibrium partition function and the return probability
in many-body unitary dynamics has led to the concept of dynamical quantum phase
transition (DQPT). DQPTs are defined by nonanalyticities in the return amplitude
and are present in many models. In some cases, DQPTs can be related to equilibrium
concepts, such as order parameters, yet their universal description is an open
question. In this Letter, we provide first steps toward a classification of DQPTs
by using a matrix product state description of unitary dynamics in the thermodynamic
limit. This allows us to distinguish the two limiting cases of “precession” and
“entanglement” DQPTs, which are illustrated using an analytical description in
the quantum Ising model. While precession DQPTs are characterized by a large entanglement
gap and are semiclassical in their nature, entanglement DQPTs occur near avoided
crossings in the entanglement spectrum and can be distinguished by a complex pattern
of nonlocal correlations. We demonstrate the existence of precession and entanglement
DQPTs beyond Ising models, discuss observables that can distinguish them, and
relate their interplay to complex DQPT phenomenology.
acknowledgement: "S. D. N. acknowledges funding from the Institute of Science and
Technology (IST) Austria and from the European Union’s Horizon 2020 Research and
Innovation Programme under the Marie Skłodowska-Curie Grant Agreement No. 754411.
A. M. and M. S. were supported by the European Research Council (ERC) under the
European Union’s Horizon 2020 Research and\r\nInnovation Programme (Grant Agreement
No. 850899)."
article_number: '040602'
article_processing_charge: Yes
article_type: original
author:
- first_name: Stefano
full_name: De Nicola, Stefano
id: 42832B76-F248-11E8-B48F-1D18A9856A87
last_name: De Nicola
orcid: 0000-0002-4842-6671
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: De Nicola S, Michailidis A, Serbyn M. Entanglement view of dynamical quantum
phase transitions. Physical Review Letters. 2021;126(4). doi:10.1103/physrevlett.126.040602
apa: De Nicola, S., Michailidis, A., & Serbyn, M. (2021). Entanglement view
of dynamical quantum phase transitions. Physical Review Letters. American
Physical Society. https://doi.org/10.1103/physrevlett.126.040602
chicago: De Nicola, Stefano, Alexios Michailidis, and Maksym Serbyn. “Entanglement
View of Dynamical Quantum Phase Transitions.” Physical Review Letters.
American Physical Society, 2021. https://doi.org/10.1103/physrevlett.126.040602.
ieee: S. De Nicola, A. Michailidis, and M. Serbyn, “Entanglement view of dynamical
quantum phase transitions,” Physical Review Letters, vol. 126, no. 4. American
Physical Society, 2021.
ista: De Nicola S, Michailidis A, Serbyn M. 2021. Entanglement view of dynamical
quantum phase transitions. Physical Review Letters. 126(4), 040602.
mla: De Nicola, Stefano, et al. “Entanglement View of Dynamical Quantum Phase Transitions.”
Physical Review Letters, vol. 126, no. 4, 040602, American Physical Society,
2021, doi:10.1103/physrevlett.126.040602.
short: S. De Nicola, A. Michailidis, M. Serbyn, Physical Review Letters 126 (2021).
date_created: 2021-02-01T09:20:00Z
date_published: 2021-01-29T00:00:00Z
date_updated: 2023-09-05T12:08:58Z
day: '29'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physrevlett.126.040602
ec_funded: 1
external_id:
arxiv:
- '2008.04894'
isi:
- '000613148200001'
file:
- access_level: open_access
checksum: d9acbc502390ed7a97e631d23ae19ecd
content_type: application/pdf
creator: dernst
date_created: 2021-02-03T12:47:04Z
date_updated: 2021-02-03T12:47:04Z
file_id: '9074'
file_name: 2021_PhysicalRevLett_DeNicola.pdf
file_size: 398075
relation: main_file
success: 1
file_date_updated: 2021-02-03T12:47:04Z
has_accepted_license: '1'
intvolume: ' 126'
isi: 1
issue: '4'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Entanglement view of dynamical quantum phase transitions
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 126
year: '2021'
...
---
_id: '9760'
abstract:
- lang: eng
text: "The quantum approximate optimization algorithm (QAOA) is a prospective near-term
quantum algorithm due to its modest circuit depth and promising benchmarks. However,
an external parameter optimization required in the QAOA could become a performance
bottleneck. This motivates studies of the optimization landscape and search for
heuristic ways of parameter initialization. In this work we visualize the optimization
landscape of the QAOA applied to the MaxCut problem on random graphs, demonstrating
that random initialization of the QAOA is prone to converging to local minima
with suboptimal performance. We introduce the initialization of QAOA parameters
based on the Trotterized quantum annealing (TQA) protocol, parameterized by the
Trotter time step. We find that the TQA initialization allows to circumvent\r\nthe
issue of false minima for a broad range of time steps, yielding the same performance
as the best result out of an exponentially scaling number of random initializations.
Moreover, we demonstrate that the optimal value of the time step coincides with
the point of proliferation of Trotter errors in quantum annealing. Our results
suggest practical ways of initializing QAOA protocols on near-term quantum devices
and reveal new connections between QAOA and quantum annealing."
acknowledgement: We would like to thank D. Abanin and R. Medina for fruitful discussions
and A. Smith and I. Kim for valuable feedback on the manuscript. We acknowledge
support by the European Research Council (ERC) under the European Union’s Horizon
2020 research and innovation program (Grant Agreement No. 850899).
article_number: '491'
article_processing_charge: Yes
article_type: original
author:
- first_name: Stefan
full_name: Sack, Stefan
id: dd622248-f6e0-11ea-865d-ce382a1c81a5
last_name: Sack
orcid: 0000-0001-5400-8508
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Sack S, Serbyn M. Quantum annealing initialization of the quantum approximate
optimization algorithm. Quantum. 2021;5. doi:10.22331/Q-2021-07-01-491
apa: Sack, S., & Serbyn, M. (2021). Quantum annealing initialization of the
quantum approximate optimization algorithm. Quantum. Verein zur Förderung
des Open Access Publizierens in den Quantenwissenschaften. https://doi.org/10.22331/Q-2021-07-01-491
chicago: Sack, Stefan, and Maksym Serbyn. “Quantum Annealing Initialization of the
Quantum Approximate Optimization Algorithm.” Quantum. Verein zur Förderung
des Open Access Publizierens in den Quantenwissenschaften, 2021. https://doi.org/10.22331/Q-2021-07-01-491.
ieee: S. Sack and M. Serbyn, “Quantum annealing initialization of the quantum approximate
optimization algorithm,” Quantum, vol. 5. Verein zur Förderung des Open
Access Publizierens in den Quantenwissenschaften, 2021.
ista: Sack S, Serbyn M. 2021. Quantum annealing initialization of the quantum approximate
optimization algorithm. Quantum. 5, 491.
mla: Sack, Stefan, and Maksym Serbyn. “Quantum Annealing Initialization of the Quantum
Approximate Optimization Algorithm.” Quantum, vol. 5, 491, Verein zur Förderung
des Open Access Publizierens in den Quantenwissenschaften, 2021, doi:10.22331/Q-2021-07-01-491.
short: S. Sack, M. Serbyn, Quantum 5 (2021).
date_created: 2021-08-01T22:01:21Z
date_published: 2021-07-01T00:00:00Z
date_updated: 2023-12-13T14:47:25Z
day: '01'
ddc:
- '530'
department:
- _id: GradSch
- _id: MaSe
doi: 10.22331/Q-2021-07-01-491
ec_funded: 1
external_id:
arxiv:
- '2101.05742'
isi:
- '000669830600001'
file:
- access_level: open_access
checksum: 9706c2bb8e748e9b5b138381995a7f6f
content_type: application/pdf
creator: cchlebak
date_created: 2021-08-06T06:44:31Z
date_updated: 2021-08-06T06:44:31Z
file_id: '9774'
file_name: 2021_Quantum_Sack.pdf
file_size: 2312482
relation: main_file
file_date_updated: 2021-08-06T06:44:31Z
has_accepted_license: '1'
intvolume: ' 5'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Quantum
publication_identifier:
eissn:
- 2521-327X
publication_status: published
publisher: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
quality_controlled: '1'
related_material:
record:
- id: '14622'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Quantum annealing initialization of the quantum approximate optimization algorithm
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2021'
...
---
_id: '10029'
abstract:
- lang: eng
text: Superconductor-semiconductor hybrids are platforms for realizing effective
p-wave superconductivity. Spin-orbit coupling, combined with the proximity effect,
causes the two-dimensional semiconductor to inherit p±ip intraband pairing, and
application of magnetic field can then result in transitions to the normal state,
partial Bogoliubov Fermi surfaces, or topological phases with Majorana modes.
Experimentally probing the hybrid superconductor-semiconductor interface is challenging
due to the shunting effect of the conventional superconductor. Consequently, the
nature of induced pairing remains an open question. Here, we use the circuit quantum
electrodynamics architecture to probe induced superconductivity in a two dimensional
Al-InAs hybrid system. We observe a strong suppression of superfluid density and
enhanced dissipation driven by magnetic field, which cannot be accounted for by
the depairing theory of an s-wave superconductor. These observations are explained
by a picture of independent intraband p±ip superconductors giving way to partial
Bogoliubov Fermi surfaces, and allow for the first characterization of key properties
of the hybrid superconducting system.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: This research was supported by the Scientific Service Units of IST
Austria through resources provided by the MIBA Machine Shop and the nanofabrication
facility. JS and AG were supported by funding from the European Union’s Horizon
2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement
No.754411.
article_number: '2107.03695'
article_processing_charge: No
author:
- first_name: Duc T
full_name: Phan, Duc T
id: 29C8C0B4-F248-11E8-B48F-1D18A9856A87
last_name: Phan
- first_name: Jorden L
full_name: Senior, Jorden L
id: 5479D234-2D30-11EA-89CC-40953DDC885E
last_name: Senior
orcid: 0000-0002-0672-9295
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: M.
full_name: Hatefipour, M.
last_name: Hatefipour
- first_name: W. M.
full_name: Strickland, W. M.
last_name: Strickland
- first_name: J.
full_name: Shabani, J.
last_name: Shabani
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Andrew P
full_name: Higginbotham, Andrew P
id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
last_name: Higginbotham
orcid: 0000-0003-2607-2363
citation:
ama: Phan DT, Senior JL, Ghazaryan A, et al. Breakdown of induced p±ip pairing in
a superconductor-semiconductor hybrid. arXiv.
apa: Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M.,
Shabani, J., … Higginbotham, A. P. (n.d.). Breakdown of induced p±ip pairing in
a superconductor-semiconductor hybrid. arXiv.
chicago: Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland,
J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Breakdown of Induced P±ip
Pairing in a Superconductor-Semiconductor Hybrid.” ArXiv, n.d.
ieee: D. T. Phan et al., “Breakdown of induced p±ip pairing in a superconductor-semiconductor
hybrid,” arXiv. .
ista: Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn
M, Higginbotham AP. Breakdown of induced p±ip pairing in a superconductor-semiconductor
hybrid. arXiv, 2107.03695.
mla: Phan, Duc T., et al. “Breakdown of Induced P±ip Pairing in a Superconductor-Semiconductor
Hybrid.” ArXiv, 2107.03695.
short: D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J.
Shabani, M. Serbyn, A.P. Higginbotham, ArXiv (n.d.).
date_created: 2021-09-21T08:41:02Z
date_published: 2021-07-08T00:00:00Z
date_updated: 2024-02-21T12:36:52Z
day: '08'
department:
- _id: MaSe
- _id: AnHi
- _id: MiLe
ec_funded: 1
external_id:
arxiv:
- '2107.03695'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2107.03695
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: arXiv
publication_status: submitted
related_material:
record:
- id: '10851'
relation: later_version
status: public
- id: '9636'
relation: research_data
status: public
status: public
title: Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9428'
abstract:
- lang: eng
text: Thermalization is the inevitable fate of many complex quantum systems, whose
dynamics allow them to fully explore the vast configuration space regardless of
the initial state---the behaviour known as quantum ergodicity. In a quest for
experimental realizations of coherent long-time dynamics, efforts have focused
on ergodicity-breaking mechanisms, such as integrability and localization. The
recent discovery of persistent revivals in quantum simulators based on Rydberg
atoms have pointed to the existence of a new type of behaviour where the system
rapidly relaxes for most initial conditions, while certain initial states give
rise to non-ergodic dynamics. This collective effect has been named ”quantum many-body
scarring’by analogy with a related form of weak ergodicity breaking that occurs
for a single particle inside a stadium billiard potential. In this Review, we
provide a pedagogical introduction to quantum many-body scars and highlight the
emerging connections with the semiclassical quantization of many-body systems.
We discuss the relation between scars and more general routes towards weak violations
of ergodicity due to embedded algebras and non-thermal eigenstates, and highlight
possible applications of scars in quantum technology.
acknowledgement: We thank our collaborators K. Bull, S. Choi, J.-Y. Desaules, W. W.
Ho, A. Hudomal, M. Lukin, I. Martin, H. Pichler, N. Regnault, I. Vasić and in particular
A. Michailidis and C. Turner, without whom this work would not have been possible.
We also benefited from discussions with E. Altman, B. A. Bernevig, A. Chandran,
P. Fendley, V. Khemani and L. Motrunich. M.S. was supported by the European Research
Council (ERC) under the European Union’s Horizon 2020 research and innovation programme
(grant agreement no. 850899). D.A.A. was supported by the Swiss National Science
Foundation and by the ERC under the European Union’s Horizon 2020 research and innovation
programme (grant agreement no. 864597). Z.P. acknowledges support by the Leverhulme
Trust Research Leadership Award RL-2019-015.
article_processing_charge: No
article_type: review
author:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
citation:
ama: Serbyn M, Abanin DA, Papić Z. Quantum many-body scars and weak breaking of
ergodicity. Nature Physics. 2021;17(6):675–685. doi:10.1038/s41567-021-01230-2
apa: Serbyn, M., Abanin, D. A., & Papić, Z. (2021). Quantum many-body scars
and weak breaking of ergodicity. Nature Physics. Nature Research. https://doi.org/10.1038/s41567-021-01230-2
chicago: Serbyn, Maksym, Dmitry A. Abanin, and Zlatko Papić. “Quantum Many-Body
Scars and Weak Breaking of Ergodicity.” Nature Physics. Nature Research,
2021. https://doi.org/10.1038/s41567-021-01230-2.
ieee: M. Serbyn, D. A. Abanin, and Z. Papić, “Quantum many-body scars and weak breaking
of ergodicity,” Nature Physics, vol. 17, no. 6. Nature Research, pp. 675–685,
2021.
ista: Serbyn M, Abanin DA, Papić Z. 2021. Quantum many-body scars and weak breaking
of ergodicity. Nature Physics. 17(6), 675–685.
mla: Serbyn, Maksym, et al. “Quantum Many-Body Scars and Weak Breaking of Ergodicity.”
Nature Physics, vol. 17, no. 6, Nature Research, 2021, pp. 675–685, doi:10.1038/s41567-021-01230-2.
short: M. Serbyn, D.A. Abanin, Z. Papić, Nature Physics 17 (2021) 675–685.
date_created: 2021-05-28T09:03:50Z
date_published: 2021-06-01T00:00:00Z
date_updated: 2023-10-18T08:20:59Z
day: '01'
ddc:
- '539'
department:
- _id: MaSe
doi: 10.1038/s41567-021-01230-2
ec_funded: 1
external_id:
arxiv:
- '2011.09486'
isi:
- '000655563800002'
file:
- access_level: open_access
checksum: 316ed42ea1b42b0f1a3025bb476266fc
content_type: application/pdf
creator: patrickd
date_created: 2021-09-20T09:27:43Z
date_updated: 2021-12-02T23:30:03Z
embargo: 2021-12-01
file_id: '10026'
file_name: RevisedQMBSreview.pdf
file_size: 10028836
relation: main_file
file_date_updated: 2021-12-02T23:30:03Z
has_accepted_license: '1'
intvolume: ' 17'
isi: 1
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Preprint
page: 675–685
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
publication_status: published
publisher: Nature Research
quality_controlled: '1'
status: public
title: Quantum many-body scars and weak breaking of ergodicity
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2021'
...
---
_id: '8011'
abstract:
- lang: eng
text: 'Relaxation to a thermal state is the inevitable fate of nonequilibrium interacting
quantum systems without special conservation laws. While thermalization in one-dimensional
systems can often be suppressed by integrability mechanisms, in two spatial dimensions
thermalization is expected to be far more effective due to the increased phase
space. In this work we propose a general framework for escaping or delaying the
emergence of the thermal state in two-dimensional arrays of Rydberg atoms via
the mechanism of quantum scars, i.e., initial states that fail to thermalize.
The suppression of thermalization is achieved in two complementary ways: by adding
local perturbations or by adjusting the driving Rabi frequency according to the
local connectivity of the lattice. We demonstrate that these mechanisms allow
us to realize robust quantum scars in various two-dimensional lattices, including
decorated lattices with nonconstant connectivity. In particular, we show that
a small decrease of the Rabi frequency at the corners of the lattice is crucial
for mitigating the strong boundary effects in two-dimensional systems. Our results
identify synchronization as an important tool for future experiments on two-dimensional
quantum scars.'
article_number: '022065'
article_processing_charge: No
article_type: original
author:
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
- first_name: C. J.
full_name: Turner, C. J.
last_name: Turner
- first_name: Z.
full_name: Papić, Z.
last_name: Papić
- first_name: D. A.
full_name: Abanin, D. A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Michailidis A, Turner CJ, Papić Z, Abanin DA, Serbyn M. Stabilizing two-dimensional
quantum scars by deformation and synchronization. Physical Review Research.
2020;2(2). doi:10.1103/physrevresearch.2.022065
apa: Michailidis, A., Turner, C. J., Papić, Z., Abanin, D. A., & Serbyn, M.
(2020). Stabilizing two-dimensional quantum scars by deformation and synchronization.
Physical Review Research. American Physical Society. https://doi.org/10.1103/physrevresearch.2.022065
chicago: Michailidis, Alexios, C. J. Turner, Z. Papić, D. A. Abanin, and Maksym
Serbyn. “Stabilizing Two-Dimensional Quantum Scars by Deformation and Synchronization.”
Physical Review Research. American Physical Society, 2020. https://doi.org/10.1103/physrevresearch.2.022065.
ieee: A. Michailidis, C. J. Turner, Z. Papić, D. A. Abanin, and M. Serbyn, “Stabilizing
two-dimensional quantum scars by deformation and synchronization,” Physical
Review Research, vol. 2, no. 2. American Physical Society, 2020.
ista: Michailidis A, Turner CJ, Papić Z, Abanin DA, Serbyn M. 2020. Stabilizing
two-dimensional quantum scars by deformation and synchronization. Physical Review
Research. 2(2), 022065.
mla: Michailidis, Alexios, et al. “Stabilizing Two-Dimensional Quantum Scars by
Deformation and Synchronization.” Physical Review Research, vol. 2, no.
2, 022065, American Physical Society, 2020, doi:10.1103/physrevresearch.2.022065.
short: A. Michailidis, C.J. Turner, Z. Papić, D.A. Abanin, M. Serbyn, Physical Review
Research 2 (2020).
date_created: 2020-06-23T12:00:19Z
date_published: 2020-06-22T00:00:00Z
date_updated: 2021-01-12T08:16:30Z
day: '22'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physrevresearch.2.022065
ec_funded: 1
file:
- access_level: open_access
checksum: e6959dc8220f14a008d1933858795e6d
content_type: application/pdf
creator: dernst
date_created: 2020-06-29T14:41:27Z
date_updated: 2020-07-14T12:48:08Z
file_id: '8050'
file_name: 2020_PhysicalReviewResearch_Michailidis.pdf
file_size: 2066011
relation: main_file
file_date_updated: 2020-07-14T12:48:08Z
has_accepted_license: '1'
intvolume: ' 2'
issue: '2'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Stabilizing two-dimensional quantum scars by deformation and synchronization
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2
year: '2020'
...
---
_id: '7570'
abstract:
- lang: eng
text: The relaxation of few-body quantum systems can strongly depend on the initial
state when the system’s semiclassical phase space is mixed; i.e., regions of chaotic
motion coexist with regular islands. In recent years, there has been much effort
to understand the process of thermalization in strongly interacting quantum systems
that often lack an obvious semiclassical limit. The time-dependent variational
principle (TDVP) allows one to systematically derive an effective classical (nonlinear)
dynamical system by projecting unitary many-body dynamics onto a manifold of weakly
entangled variational states. We demonstrate that such dynamical systems generally
possess mixed phase space. When TDVP errors are small, the mixed phase space leaves
a footprint on the exact dynamics of the quantum model. For example, when the
system is initialized in a state belonging to a stable periodic orbit or the surrounding
regular region, it exhibits persistent many-body quantum revivals. As a proof
of principle, we identify new types of “quantum many-body scars,” i.e., initial
states that lead to long-time oscillations in a model of interacting Rydberg atoms
in one and two dimensions. Intriguingly, the initial states that give rise to
most robust revivals are typically entangled states. On the other hand, even when
TDVP errors are large, as in the thermalizing tilted-field Ising model, initializing
the system in a regular region of phase space leads to a surprising slowdown of
thermalization. Our work establishes TDVP as a method for identifying interacting
quantum systems with anomalous dynamics in arbitrary dimensions. Moreover, the
mixed phase space classical variational equations allow one to find slowly thermalizing
initial conditions in interacting models. Our results shed light on a link between
classical and quantum chaos, pointing toward possible extensions of the classical
Kolmogorov-Arnold-Moser theorem to quantum systems.
article_number: '011055'
article_processing_charge: No
article_type: original
author:
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: C. J.
full_name: Turner, C. J.
last_name: Turner
- first_name: Z.
full_name: Papić, Z.
last_name: Papić
- first_name: D. A.
full_name: Abanin, D. A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Michailidis A, Turner CJ, Papić Z, Abanin DA, Serbyn M. Slow quantum thermalization
and many-body revivals from mixed phase space. Physical Review X. 2020;10(1).
doi:10.1103/physrevx.10.011055
apa: Michailidis, A., Turner, C. J., Papić, Z., Abanin, D. A., & Serbyn, M.
(2020). Slow quantum thermalization and many-body revivals from mixed phase space.
Physical Review X. American Physical Society. https://doi.org/10.1103/physrevx.10.011055
chicago: Michailidis, Alexios, C. J. Turner, Z. Papić, D. A. Abanin, and Maksym
Serbyn. “Slow Quantum Thermalization and Many-Body Revivals from Mixed Phase Space.”
Physical Review X. American Physical Society, 2020. https://doi.org/10.1103/physrevx.10.011055.
ieee: A. Michailidis, C. J. Turner, Z. Papić, D. A. Abanin, and M. Serbyn, “Slow
quantum thermalization and many-body revivals from mixed phase space,” Physical
Review X, vol. 10, no. 1. American Physical Society, 2020.
ista: Michailidis A, Turner CJ, Papić Z, Abanin DA, Serbyn M. 2020. Slow quantum
thermalization and many-body revivals from mixed phase space. Physical Review
X. 10(1), 011055.
mla: Michailidis, Alexios, et al. “Slow Quantum Thermalization and Many-Body Revivals
from Mixed Phase Space.” Physical Review X, vol. 10, no. 1, 011055, American
Physical Society, 2020, doi:10.1103/physrevx.10.011055.
short: A. Michailidis, C.J. Turner, Z. Papić, D.A. Abanin, M. Serbyn, Physical Review
X 10 (2020).
date_created: 2020-03-08T18:02:01Z
date_published: 2020-03-04T00:00:00Z
date_updated: 2023-08-18T07:01:07Z
day: '04'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physrevx.10.011055
external_id:
arxiv:
- '1905.08564'
isi:
- '000517969300001'
file:
- access_level: open_access
checksum: 4b3f2c13873d35230173c73d0e11c408
content_type: application/pdf
creator: dernst
date_created: 2020-03-12T12:13:07Z
date_updated: 2020-07-14T12:48:00Z
file_id: '7581'
file_name: 2020_PhysicalReviewX_Michailidis.pdf
file_size: 17828638
relation: main_file
file_date_updated: 2020-07-14T12:48:00Z
has_accepted_license: '1'
intvolume: ' 10'
isi: 1
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
publication: Physical Review X
publication_identifier:
issn:
- 2160-3308
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/classical-physics-helps-predict-fate-of-interacting-quantum-systems/
scopus_import: '1'
status: public
title: Slow quantum thermalization and many-body revivals from mixed phase space
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 10
year: '2020'
...
---
_id: '7638'
abstract:
- lang: eng
text: Following on from our recent work, we investigate a stochastic approach to
non-equilibrium quantum spin systems. We show how the method can be applied to
a variety of physical observables and for different initial conditions. We provide
exact formulae of broad applicability for the time-dependence of expectation values
and correlation functions following a quantum quench in terms of averages over
classical stochastic processes. We further explore the behavior of the classical
stochastic variables in the presence of dynamical quantum phase transitions, including
results for their distributions and correlation functions. We provide details
on the numerical solution of the associated stochastic differential equations,
and examine the growth of fluctuations in the classical description. We discuss
the strengths and limitations of the current implementation of the stochastic
approach and the potential for further development.
article_number: '013106'
article_processing_charge: No
article_type: original
author:
- first_name: Stefano
full_name: De Nicola, Stefano
id: 42832B76-F248-11E8-B48F-1D18A9856A87
last_name: De Nicola
orcid: 0000-0002-4842-6671
- first_name: B.
full_name: Doyon, B.
last_name: Doyon
- first_name: M. J.
full_name: Bhaseen, M. J.
last_name: Bhaseen
citation:
ama: 'De Nicola S, Doyon B, Bhaseen MJ. Non-equilibrium quantum spin dynamics from
classical stochastic processes. Journal of Statistical Mechanics: Theory and
Experiment. 2020;2020(1). doi:10.1088/1742-5468/ab6093'
apa: 'De Nicola, S., Doyon, B., & Bhaseen, M. J. (2020). Non-equilibrium quantum
spin dynamics from classical stochastic processes. Journal of Statistical Mechanics:
Theory and Experiment. IOP Publishing. https://doi.org/10.1088/1742-5468/ab6093'
chicago: 'De Nicola, Stefano, B. Doyon, and M. J. Bhaseen. “Non-Equilibrium Quantum
Spin Dynamics from Classical Stochastic Processes.” Journal of Statistical
Mechanics: Theory and Experiment. IOP Publishing, 2020. https://doi.org/10.1088/1742-5468/ab6093.'
ieee: 'S. De Nicola, B. Doyon, and M. J. Bhaseen, “Non-equilibrium quantum spin
dynamics from classical stochastic processes,” Journal of Statistical Mechanics:
Theory and Experiment, vol. 2020, no. 1. IOP Publishing, 2020.'
ista: 'De Nicola S, Doyon B, Bhaseen MJ. 2020. Non-equilibrium quantum spin dynamics
from classical stochastic processes. Journal of Statistical Mechanics: Theory
and Experiment. 2020(1), 013106.'
mla: 'De Nicola, Stefano, et al. “Non-Equilibrium Quantum Spin Dynamics from Classical
Stochastic Processes.” Journal of Statistical Mechanics: Theory and Experiment,
vol. 2020, no. 1, 013106, IOP Publishing, 2020, doi:10.1088/1742-5468/ab6093.'
short: 'S. De Nicola, B. Doyon, M.J. Bhaseen, Journal of Statistical Mechanics:
Theory and Experiment 2020 (2020).'
date_created: 2020-04-05T22:00:50Z
date_published: 2020-01-22T00:00:00Z
date_updated: 2023-08-18T10:27:15Z
day: '22'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1088/1742-5468/ab6093
ec_funded: 1
external_id:
arxiv:
- '1909.13142'
isi:
- '000520187500001'
file:
- access_level: open_access
checksum: 4030e683c15d30b7b4794ec7dc1b6537
content_type: application/pdf
creator: dernst
date_created: 2020-04-06T13:15:49Z
date_updated: 2020-07-14T12:48:01Z
file_id: '7648'
file_name: 2020_JournStatisticalMech_DeNicola.pdf
file_size: 3159026
relation: main_file
file_date_updated: 2020-07-14T12:48:01Z
has_accepted_license: '1'
intvolume: ' 2020'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: 'Journal of Statistical Mechanics: Theory and Experiment'
publication_identifier:
eissn:
- '17425468'
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Non-equilibrium quantum spin dynamics from classical stochastic processes
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 2020
year: '2020'
...
---
_id: '8199'
abstract:
- lang: eng
text: We investigate a mechanism to transiently stabilize topological phenomena
in long-lived quasi-steady states of isolated quantum many-body systems driven
at low frequencies. We obtain an analytical bound for the lifetime of the quasi-steady
states which is exponentially large in the inverse driving frequency. Within this
lifetime, the quasi-steady state is characterized by maximum entropy subject to
the constraint of fixed number of particles in the system's Floquet-Bloch bands.
In such a state, all the non-universal properties of these bands are washed out,
hence only the topological properties persist.
acknowledgement: "N.L., T.G. and E.B. acknowledge support from the European Research
Council (ERC) under\r\nthe European Union Horizon 2020 Research and Innovation Programme
(Grant Agreement\r\nNo. 639172). T.G. was in part supported by an Aly Kaufman Fellowship
at the Technion. T.G.\r\nacknowledges funding from the Institute of Science and
Technology (IST) Austria, and from\r\nthe European Union’s Horizon 2020 research
and innovation programme under the Marie\r\nSkłodowska-Curie Grant Agreement No.
754411. N.L. acknowledges support from the People Programme (Marie Curie Actions)
of the European Unions Seventh Framework 546 Programme (FP7/20072013), under REA
Grant Agreement No. 631696, and by the Israeli Center\r\nof Research Excellence
(I-CORE) Circle of Light funded by the Israel Science Foundation (Grant\r\nNo. 1802/12).
M.R. gratefully acknowledges the support of the European Research Council\r\n(ERC)
under the European Union Horizon 2020 Research and Innovation Programme (Grant\r\nAgreement
No. 678862). M.R. acknowledges the support of the Villum Foundation. M.R. and\r\nE.B.
acknowledge support from CRC 183 of the Deutsche Forschungsgemeinschaft"
article_number: '015'
article_processing_charge: No
article_type: original
author:
- first_name: Tobias
full_name: Gulden, Tobias
id: 1083E038-9F73-11E9-A4B5-532AE6697425
last_name: Gulden
orcid: 0000-0001-6814-7541
- first_name: Erez
full_name: Berg, Erez
last_name: Berg
- first_name: Mark Spencer
full_name: Rudner, Mark Spencer
last_name: Rudner
- first_name: Netanel
full_name: Lindner, Netanel
last_name: Lindner
citation:
ama: Gulden T, Berg E, Rudner MS, Lindner N. Exponentially long lifetime of universal
quasi-steady states in topological Floquet pumps. SciPost Physics. 2020;9.
doi:10.21468/scipostphys.9.1.015
apa: Gulden, T., Berg, E., Rudner, M. S., & Lindner, N. (2020). Exponentially
long lifetime of universal quasi-steady states in topological Floquet pumps. SciPost
Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.9.1.015
chicago: Gulden, Tobias, Erez Berg, Mark Spencer Rudner, and Netanel Lindner. “Exponentially
Long Lifetime of Universal Quasi-Steady States in Topological Floquet Pumps.”
SciPost Physics. SciPost Foundation, 2020. https://doi.org/10.21468/scipostphys.9.1.015.
ieee: T. Gulden, E. Berg, M. S. Rudner, and N. Lindner, “Exponentially long lifetime
of universal quasi-steady states in topological Floquet pumps,” SciPost Physics,
vol. 9. SciPost Foundation, 2020.
ista: Gulden T, Berg E, Rudner MS, Lindner N. 2020. Exponentially long lifetime
of universal quasi-steady states in topological Floquet pumps. SciPost Physics.
9, 015.
mla: Gulden, Tobias, et al. “Exponentially Long Lifetime of Universal Quasi-Steady
States in Topological Floquet Pumps.” SciPost Physics, vol. 9, 015, SciPost
Foundation, 2020, doi:10.21468/scipostphys.9.1.015.
short: T. Gulden, E. Berg, M.S. Rudner, N. Lindner, SciPost Physics 9 (2020).
date_created: 2020-08-04T13:04:15Z
date_published: 2020-07-29T00:00:00Z
date_updated: 2023-08-22T08:28:24Z
day: '29'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.21468/scipostphys.9.1.015
ec_funded: 1
external_id:
isi:
- '000557362300008'
file:
- access_level: open_access
content_type: application/pdf
creator: dernst
date_created: 2020-08-06T08:56:06Z
date_updated: 2020-08-06T08:56:06Z
file_id: '8202'
file_name: 2020_SciPostPhys_Gulden.pdf
file_size: 531137
relation: main_file
success: 1
file_date_updated: 2020-08-06T08:56:06Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: SciPost Physics
publication_identifier:
issn:
- 2542-4653
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
scopus_import: '1'
status: public
title: Exponentially long lifetime of universal quasi-steady states in topological
Floquet pumps
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 9
year: '2020'
...
---
_id: '8308'
abstract:
- lang: eng
text: 'Many-body localization provides a mechanism to avoid thermalization in isolated
interacting quantum systems. The breakdown of thermalization may be complete,
when all eigenstates in the many-body spectrum become localized, or partial, when
the so-called many-body mobility edge separates localized and delocalized parts
of the spectrum. Previously, De Roeck et al. [Phys. Rev. B 93, 014203 (2016)]
suggested a possible instability of the many-body mobility edge in energy density.
The local ergodic regions—so-called “bubbles”—resonantly spread throughout the
system, leading to delocalization. In order to study such instability mechanism,
in this work we design a model featuring many-body mobility edge in particle density:
the states at small particle density are localized, while increasing the density
of particles leads to delocalization. Using numerical simulations with matrix
product states, we demonstrate the stability of many-body localization with respect
to small bubbles in large dilute systems for experimentally relevant timescales.
In addition, we demonstrate that processes where the bubble spreads are favored
over processes that lead to resonant tunneling, suggesting a possible mechanism
behind the observed stability of many-body mobility edge. We conclude by proposing
experiments to probe particle density mobility edge in the Bose-Hubbard model.'
acknowledgement: 'Acknowledgments. We acknowledge useful discussions with W. De Roeck
and A. Michailidis. P.B. was supported by the European Union''s Horizon 2020 research
and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 665385.
D.A. was supported by the Swiss National Science Foundation. M.S. was supported
by European Research Council (ERC) under the European Union''s Horizon 2020 research
and innovation program (Grant Agreement No. 850899). This work benefited from visits
to KITP, supported by the National Science Foundation under Grant No. NSF PHY-1748958
and from the program “Thermalization, Many Body Localization and Hydrodynamics”
at International Centre for Theoretical Sciences (Code: ICTS/hydrodynamics2019/11).'
article_number: 060202(R)
article_processing_charge: No
article_type: original
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Brighi P, Abanin DA, Serbyn M. Stability of mobility edges in disordered interacting
systems. Physical Review B. 2020;102(6). doi:10.1103/physrevb.102.060202
apa: Brighi, P., Abanin, D. A., & Serbyn, M. (2020). Stability of mobility edges
in disordered interacting systems. Physical Review B. American Physical
Society. https://doi.org/10.1103/physrevb.102.060202
chicago: Brighi, Pietro, Dmitry A. Abanin, and Maksym Serbyn. “Stability of Mobility
Edges in Disordered Interacting Systems.” Physical Review B. American Physical
Society, 2020. https://doi.org/10.1103/physrevb.102.060202.
ieee: P. Brighi, D. A. Abanin, and M. Serbyn, “Stability of mobility edges in disordered
interacting systems,” Physical Review B, vol. 102, no. 6. American Physical
Society, 2020.
ista: Brighi P, Abanin DA, Serbyn M. 2020. Stability of mobility edges in disordered
interacting systems. Physical Review B. 102(6), 060202(R).
mla: Brighi, Pietro, et al. “Stability of Mobility Edges in Disordered Interacting
Systems.” Physical Review B, vol. 102, no. 6, 060202(R), American Physical
Society, 2020, doi:10.1103/physrevb.102.060202.
short: P. Brighi, D.A. Abanin, M. Serbyn, Physical Review B 102 (2020).
date_created: 2020-08-26T19:27:42Z
date_published: 2020-08-26T00:00:00Z
date_updated: 2023-08-24T14:20:21Z
day: '26'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physrevb.102.060202
ec_funded: 1
external_id:
isi:
- '000562628300001'
file:
- access_level: open_access
checksum: 716442fa7861323fcc80b93718ca009c
content_type: application/pdf
creator: mserbyn
date_created: 2020-08-26T19:28:55Z
date_updated: 2020-08-26T19:28:55Z
file_id: '8309'
file_name: PhysRevB.102.060202.pdf
file_size: 488825
relation: main_file
success: 1
- access_level: open_access
checksum: be0abdc8f60fe065ea6dc92e08487122
content_type: application/pdf
creator: mserbyn
date_created: 2020-08-26T19:29:00Z
date_updated: 2020-08-26T19:29:00Z
file_id: '8310'
file_name: Supplementary-mbme.pdf
file_size: 711405
relation: main_file
success: 1
file_date_updated: 2020-08-26T19:29:00Z
has_accepted_license: '1'
intvolume: ' 102'
isi: 1
issue: '6'
language:
- iso: eng
month: '08'
oa: 1
oa_version: None
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '12732'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Stability of mobility edges in disordered interacting systems
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 102
year: '2020'
...
---
_id: '7971'
abstract:
- lang: eng
text: Multilayer graphene lattices allow for an additional tunability of the band
structure by the strong perpendicular electric field. In particular, the emergence
of the new multiple Dirac points in ABA stacked trilayer graphene subject to strong
transverse electric fields was proposed theoretically and confirmed experimentally.
These new Dirac points dubbed “gullies” emerge from the interplay between strong
electric field and trigonal warping. In this work, we first characterize the properties
of new emergent Dirac points and show that the electric field can be used to tune
the distance between gullies in the momentum space. We demonstrate that the band
structure has multiple Lifshitz transitions and higher-order singularity of “monkey
saddle” type. Following the characterization of the band structure, we consider
the spectrum of Landau levels and structure of their wave functions. In the limit
of strong electric fields when gullies are well separated in momentum space, they
give rise to triply degenerate Landau levels. In the second part of this work,
we investigate how degeneracy between three gully Landau levels is lifted in the
presence of interactions. Within the Hartree-Fock approximation we show that the
symmetry breaking state interpolates between the fully gully polarized state that
breaks C3 symmetry at high displacement field and the gully symmetric state when
the electric field is decreased. The discontinuous transition between these two
states is driven by enhanced intergully tunneling and exchange. We conclude by
outlining specific experimental predictions for the existence of such a symmetry-breaking
state.
article_number: '245411'
article_processing_charge: No
article_type: original
author:
- first_name: Peng
full_name: Rao, Peng
id: 47C23AC6-02D0-11E9-BD0E-99399A5D3DEB
last_name: Rao
orcid: 0000-0003-1250-0021
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Rao P, Serbyn M. Gully quantum Hall ferromagnetism in biased trilayer graphene.
Physical Review B. 2020;101(24). doi:10.1103/physrevb.101.245411
apa: Rao, P., & Serbyn, M. (2020). Gully quantum Hall ferromagnetism in biased
trilayer graphene. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.101.245411
chicago: Rao, Peng, and Maksym Serbyn. “Gully Quantum Hall Ferromagnetism in Biased
Trilayer Graphene.” Physical Review B. American Physical Society, 2020.
https://doi.org/10.1103/physrevb.101.245411.
ieee: P. Rao and M. Serbyn, “Gully quantum Hall ferromagnetism in biased trilayer
graphene,” Physical Review B, vol. 101, no. 24. American Physical Society,
2020.
ista: Rao P, Serbyn M. 2020. Gully quantum Hall ferromagnetism in biased trilayer
graphene. Physical Review B. 101(24), 245411.
mla: Rao, Peng, and Maksym Serbyn. “Gully Quantum Hall Ferromagnetism in Biased
Trilayer Graphene.” Physical Review B, vol. 101, no. 24, 245411, American
Physical Society, 2020, doi:10.1103/physrevb.101.245411.
short: P. Rao, M. Serbyn, Physical Review B 101 (2020).
date_created: 2020-06-17T14:52:06Z
date_published: 2020-06-15T00:00:00Z
date_updated: 2023-09-05T12:11:37Z
day: '15'
department:
- _id: MaSe
doi: 10.1103/physrevb.101.245411
external_id:
isi:
- '000538715500010'
intvolume: ' 101'
isi: 1
issue: '24'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2002.05739
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Gully quantum Hall ferromagnetism in biased trilayer graphene
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 101
year: '2020'
...
---
_id: '6477'
abstract:
- lang: eng
text: 'Thermalizing quantum systems are conventionallydescribed by statistical mechanics
at equilib-rium. However, not all systems fall into this category, with many-body
localization providinga generic mechanism for thermalization to fail in strongly
disordered systems. Many-bodylocalized (MBL) systems remain perfect insulators
at nonzero temperature, which do notthermalize and therefore cannot be describedusing
statistical mechanics. This Colloquiumreviews recent theoretical and experimental
advances in studies of MBL systems, focusing onthe new perspective provided by
entanglement and nonequilibrium experimental probes suchas quantum quenches. Theoretically,
MBL systems exhibit a new kind of robust integrability: anextensive set of quasilocal
integrals of motion emerges, which provides an intuitive explanationof the breakdown
of thermalization. A description based on quasilocal integrals of motion isused
to predict dynamical properties of MBL systems, such as the spreading of quantumentanglement,
the behavior of local observables, and the response to external dissipativeprocesses.
Furthermore, MBL systems can exhibit eigenstate transitions and quantum ordersforbidden
in thermodynamic equilibrium. An outline isgiven of the current theoretical under-standing
of the quantum-to-classical transitionbetween many-body localized and ergodic
phasesand anomalous transport in the vicinity of that transition. Experimentally,
synthetic quantumsystems, which are well isolated from an external thermal reservoir,
provide natural platforms forrealizing the MBL phase. Recent experiments with
ultracold atoms, trapped ions, superconductingqubits, and quantum materials, in
which different signatures of many-body localization have beenobserved, are reviewed.
This Colloquium concludes by listing outstanding challenges andpromising future
research directions.'
article_number: '021001'
article_processing_charge: No
article_type: original
author:
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
- first_name: Ehud
full_name: Altman, Ehud
last_name: Altman
- first_name: Immanuel
full_name: Bloch, Immanuel
last_name: Bloch
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: 'Abanin DA, Altman E, Bloch I, Serbyn M. Colloquium: Many-body localization,
thermalization, and entanglement. Reviews of Modern Physics. 2019;91(2).
doi:10.1103/revmodphys.91.021001'
apa: 'Abanin, D. A., Altman, E., Bloch, I., & Serbyn, M. (2019). Colloquium:
Many-body localization, thermalization, and entanglement. Reviews of Modern
Physics. American Physical Society. https://doi.org/10.1103/revmodphys.91.021001'
chicago: 'Abanin, Dmitry A., Ehud Altman, Immanuel Bloch, and Maksym Serbyn. “Colloquium:
Many-Body Localization, Thermalization, and Entanglement.” Reviews of Modern
Physics. American Physical Society, 2019. https://doi.org/10.1103/revmodphys.91.021001.'
ieee: 'D. A. Abanin, E. Altman, I. Bloch, and M. Serbyn, “Colloquium: Many-body
localization, thermalization, and entanglement,” Reviews of Modern Physics,
vol. 91, no. 2. American Physical Society, 2019.'
ista: 'Abanin DA, Altman E, Bloch I, Serbyn M. 2019. Colloquium: Many-body localization,
thermalization, and entanglement. Reviews of Modern Physics. 91(2), 021001.'
mla: 'Abanin, Dmitry A., et al. “Colloquium: Many-Body Localization, Thermalization,
and Entanglement.” Reviews of Modern Physics, vol. 91, no. 2, 021001, American
Physical Society, 2019, doi:10.1103/revmodphys.91.021001.'
short: D.A. Abanin, E. Altman, I. Bloch, M. Serbyn, Reviews of Modern Physics 91
(2019).
date_created: 2019-05-23T07:38:43Z
date_published: 2019-05-22T00:00:00Z
date_updated: 2023-08-25T10:37:56Z
day: '22'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/revmodphys.91.021001
external_id:
arxiv:
- '1804.11065'
isi:
- '000469046900001'
file:
- access_level: open_access
checksum: 4aec0e6662b09f6e0f828cd30ff2c3a6
content_type: application/pdf
creator: mserbyn
date_created: 2019-05-23T07:39:05Z
date_updated: 2020-07-14T12:47:31Z
file_id: '6478'
file_name: RevModPhys.91.021001.pdf
file_size: 1695677
relation: main_file
file_date_updated: 2020-07-14T12:47:31Z
has_accepted_license: '1'
intvolume: ' 91'
isi: 1
issue: '2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
publication: Reviews of Modern Physics
publication_identifier:
eissn:
- 0034-6861
issn:
- 1539-0756
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Colloquium: Many-body localization, thermalization, and entanglement'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 91
year: '2019'
...
---
_id: '6174'
abstract:
- lang: eng
text: We propose a scaling theory for the many-body localization (MBL) phase transition
in one dimension, building on the idea that it proceeds via a “quantum avalanche.”
We argue that the critical properties can be captured at a coarse-grained level
by a Kosterlitz-Thouless (KT) renormalization group (RG) flow. On phenomenological
grounds, we identify the scaling variables as the density of thermal regions and
the length scale that controls the decay of typical matrix elements. Within this
KT picture, the MBL phase is a line of fixed points that terminates at the delocalization
transition. We discuss two possible scenarios distinguished by the distribution
of rare, fractal thermal inclusions within the MBL phase. In the first scenario,
these regions have a stretched exponential distribution in the MBL phase. In the
second scenario, the near-critical MBL phase hosts rare thermal regions that are
power-law-distributed in size. This points to the existence of a second transition
within the MBL phase, at which these power laws change to the stretched exponential
form expected at strong disorder. We numerically simulate two different phenomenological
RGs previously proposed to describe the MBL transition. Both RGs display a universal
power-law length distribution of thermal regions at the transition with a critical
exponent αc=2, and continuously varying exponents in the MBL phase consistent
with the KT picture.
article_number: '094205'
article_processing_charge: No
article_type: original
author:
- first_name: Philipp T.
full_name: Dumitrescu, Philipp T.
last_name: Dumitrescu
- first_name: Anna
full_name: Goremykina, Anna
last_name: Goremykina
- first_name: Siddharth A.
full_name: Parameswaran, Siddharth A.
last_name: Parameswaran
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Romain
full_name: Vasseur, Romain
last_name: Vasseur
citation:
ama: Dumitrescu PT, Goremykina A, Parameswaran SA, Serbyn M, Vasseur R. Kosterlitz-Thouless
scaling at many-body localization phase transitions. Physical Review B.
2019;99(9). doi:10.1103/physrevb.99.094205
apa: Dumitrescu, P. T., Goremykina, A., Parameswaran, S. A., Serbyn, M., & Vasseur,
R. (2019). Kosterlitz-Thouless scaling at many-body localization phase transitions.
Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.99.094205
chicago: Dumitrescu, Philipp T., Anna Goremykina, Siddharth A. Parameswaran, Maksym
Serbyn, and Romain Vasseur. “Kosterlitz-Thouless Scaling at Many-Body Localization
Phase Transitions.” Physical Review B. American Physical Society, 2019.
https://doi.org/10.1103/physrevb.99.094205.
ieee: P. T. Dumitrescu, A. Goremykina, S. A. Parameswaran, M. Serbyn, and R. Vasseur,
“Kosterlitz-Thouless scaling at many-body localization phase transitions,” Physical
Review B, vol. 99, no. 9. American Physical Society, 2019.
ista: Dumitrescu PT, Goremykina A, Parameswaran SA, Serbyn M, Vasseur R. 2019. Kosterlitz-Thouless
scaling at many-body localization phase transitions. Physical Review B. 99(9),
094205.
mla: Dumitrescu, Philipp T., et al. “Kosterlitz-Thouless Scaling at Many-Body Localization
Phase Transitions.” Physical Review B, vol. 99, no. 9, 094205, American
Physical Society, 2019, doi:10.1103/physrevb.99.094205.
short: P.T. Dumitrescu, A. Goremykina, S.A. Parameswaran, M. Serbyn, R. Vasseur,
Physical Review B 99 (2019).
date_created: 2019-03-25T07:32:08Z
date_published: 2019-03-22T00:00:00Z
date_updated: 2023-09-05T12:11:13Z
day: '22'
department:
- _id: MaSe
doi: 10.1103/physrevb.99.094205
external_id:
arxiv:
- '1811.03103'
isi:
- '000462883200001'
intvolume: ' 99'
isi: 1
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1811.03103
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Kosterlitz-Thouless scaling at many-body localization phase transitions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 99
year: '2019'
...
---
_id: '6575'
abstract:
- lang: eng
text: Motivated by recent experimental observations of coherent many-body revivals
in a constrained Rydbergatom chain, we construct a weak quasilocal deformation
of the Rydberg-blockaded Hamiltonian, whichmakes the revivals virtually perfect.
Our analysis suggests the existence of an underlying nonintegrableHamiltonian
which supports an emergent SU(2)-spin dynamics within a small subspace of the
many-bodyHilbert space. We show that such perfect dynamics necessitates the existence
of atypical, nonergodicenergy eigenstates—quantum many-body scars. Furthermore,
using these insights, we construct a toymodel that hosts exact quantum many-body
scars, providing an intuitive explanation of their origin. Ourresults offer specific
routes to enhancing coherent many-body revivals and provide a step towardestablishing
the stability of quantum many-body scars in the thermodynamic limit.
article_number: '220603'
article_processing_charge: No
article_type: original
author:
- first_name: Soonwon
full_name: Choi, Soonwon
last_name: Choi
- first_name: Christopher J.
full_name: Turner, Christopher J.
last_name: Turner
- first_name: Hannes
full_name: Pichler, Hannes
last_name: Pichler
- first_name: Wen Wei
full_name: Ho, Wen Wei
last_name: Ho
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Mikhail D.
full_name: Lukin, Mikhail D.
last_name: Lukin
- first_name: Dmitry A.
full_name: Abanin, Dmitry A.
last_name: Abanin
citation:
ama: Choi S, Turner CJ, Pichler H, et al. Emergent SU(2) dynamics and perfect quantum
many-body scars. Physical Review Letters. 2019;122(22). doi:10.1103/PhysRevLett.122.220603
apa: Choi, S., Turner, C. J., Pichler, H., Ho, W. W., Michailidis, A., Papić, Z.,
… Abanin, D. A. (2019). Emergent SU(2) dynamics and perfect quantum many-body
scars. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.122.220603
chicago: Choi, Soonwon, Christopher J. Turner, Hannes Pichler, Wen Wei Ho, Alexios
Michailidis, Zlatko Papić, Maksym Serbyn, Mikhail D. Lukin, and Dmitry A. Abanin.
“Emergent SU(2) Dynamics and Perfect Quantum Many-Body Scars.” Physical Review
Letters. American Physical Society, 2019. https://doi.org/10.1103/PhysRevLett.122.220603.
ieee: S. Choi et al., “Emergent SU(2) dynamics and perfect quantum many-body
scars,” Physical Review Letters, vol. 122, no. 22. American Physical Society,
2019.
ista: Choi S, Turner CJ, Pichler H, Ho WW, Michailidis A, Papić Z, Serbyn M, Lukin
MD, Abanin DA. 2019. Emergent SU(2) dynamics and perfect quantum many-body scars.
Physical Review Letters. 122(22), 220603.
mla: Choi, Soonwon, et al. “Emergent SU(2) Dynamics and Perfect Quantum Many-Body
Scars.” Physical Review Letters, vol. 122, no. 22, 220603, American Physical
Society, 2019, doi:10.1103/PhysRevLett.122.220603.
short: S. Choi, C.J. Turner, H. Pichler, W.W. Ho, A. Michailidis, Z. Papić, M. Serbyn,
M.D. Lukin, D.A. Abanin, Physical Review Letters 122 (2019).
date_created: 2019-06-23T21:59:13Z
date_published: 2019-06-07T00:00:00Z
date_updated: 2024-02-28T13:12:22Z
day: '07'
department:
- _id: MaSe
doi: 10.1103/PhysRevLett.122.220603
external_id:
arxiv:
- '1812.05561'
isi:
- '000470885800005'
intvolume: ' 122'
isi: 1
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1812.05561
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_identifier:
eissn:
- '10797114'
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Emergent SU(2) dynamics and perfect quantum many-body scars
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 122
year: '2019'
...
---
_id: '7013'
abstract:
- lang: eng
text: Chains of superconducting circuit devices provide a natural platform for studies
of synthetic bosonic quantum matter. Motivated by the recent experimental progress
in realizing disordered and interacting chains of superconducting transmon devices,
we study the bosonic many-body localization phase transition using the methods
of exact diagonalization as well as matrix product state dynamics. We estimate
the location of transition separating the ergodic and the many-body localized
phases as a function of the disorder strength and the many-body on-site interaction
strength. The main difference between the bosonic model realized by superconducting
circuits and similar fermionic model is that the effect of the on-site interaction
is stronger due to the possibility of multiple excitations occupying the same
site. The phase transition is found to be robust upon including longer-range hopping
and interaction terms present in the experiments. Furthermore, we calculate experimentally
relevant local observables and show that their temporal fluctuations can be used
to distinguish between the dynamics of Anderson insulator, many-body localization,
and delocalized phases. While we consider unitary dynamics, neglecting the effects
of dissipation, decoherence, and measurement back action, the timescales on which
the dynamics is unitary are sufficient for observation of characteristic dynamics
in the many-body localized phase. Moreover, the experimentally available disorder
strength and interactions allow for tuning the many-body localization phase transition,
thus making the arrays of superconducting circuit devices a promising platform
for exploring localization physics and phase transition.
article_number: '134504'
article_processing_charge: No
article_type: original
author:
- first_name: Tuure
full_name: Orell, Tuure
last_name: Orell
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Matti
full_name: Silveri, Matti
last_name: Silveri
citation:
ama: Orell T, Michailidis A, Serbyn M, Silveri M. Probing the many-body localization
phase transition with superconducting circuits. Physical Review B. 2019;100(13).
doi:10.1103/physrevb.100.134504
apa: Orell, T., Michailidis, A., Serbyn, M., & Silveri, M. (2019). Probing the
many-body localization phase transition with superconducting circuits. Physical
Review B. American Physical Society. https://doi.org/10.1103/physrevb.100.134504
chicago: Orell, Tuure, Alexios Michailidis, Maksym Serbyn, and Matti Silveri. “Probing
the Many-Body Localization Phase Transition with Superconducting Circuits.” Physical
Review B. American Physical Society, 2019. https://doi.org/10.1103/physrevb.100.134504.
ieee: T. Orell, A. Michailidis, M. Serbyn, and M. Silveri, “Probing the many-body
localization phase transition with superconducting circuits,” Physical Review
B, vol. 100, no. 13. American Physical Society, 2019.
ista: Orell T, Michailidis A, Serbyn M, Silveri M. 2019. Probing the many-body localization
phase transition with superconducting circuits. Physical Review B. 100(13), 134504.
mla: Orell, Tuure, et al. “Probing the Many-Body Localization Phase Transition with
Superconducting Circuits.” Physical Review B, vol. 100, no. 13, 134504,
American Physical Society, 2019, doi:10.1103/physrevb.100.134504.
short: T. Orell, A. Michailidis, M. Serbyn, M. Silveri, Physical Review B 100 (2019).
date_created: 2019-11-13T08:25:48Z
date_published: 2019-10-01T00:00:00Z
date_updated: 2024-02-28T13:13:13Z
day: '01'
department:
- _id: MaSe
doi: 10.1103/physrevb.100.134504
external_id:
arxiv:
- '1907.04043'
isi:
- '000489036500004'
intvolume: ' 100'
isi: 1
issue: '13'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1907.04043
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing the many-body localization phase transition with superconducting circuits
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 100
year: '2019'
...
---
_id: '7200'
abstract:
- lang: eng
text: Recent scanning tunneling microscopy experiments in NbN thin disordered superconducting
films found an emergent inhomogeneity at the scale of tens of nanometers. This
inhomogeneity is mirrored by an apparent dimensional crossover in the paraconductivity
measured in transport above the superconducting critical temperature Tc. This
behavior was interpreted in terms of an anomalous diffusion of fluctuating Cooper
pairs that display a quasiconfinement (i.e., a slowing down of their diffusive
dynamics) on length scales shorter than the inhomogeneity identified by tunneling
experiments. Here, we assume this anomalous diffusive behavior of fluctuating
Cooper pairs and calculate the effect of these fluctuations on the electron density
of states above Tc. We find that the density of states is substantially suppressed
up to temperatures well above Tc. This behavior, which is closely reminiscent
of a pseudogap, only arises from the anomalous diffusion of fluctuating Cooper
pairs in the absence of stable preformed pairs, setting the stage for an intermediate
behavior between the two common paradigms in the superconducting-insulator transition,
namely, the localization of Cooper pairs (the so-called bosonic scenario) and
the breaking of Cooper pairs into unpaired electrons due to strong disorder (the
so-called fermionic scenario).
article_number: '174518'
article_processing_charge: No
article_type: original
author:
- first_name: Pietro
full_name: Brighi, Pietro
id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
last_name: Brighi
orcid: 0000-0002-7969-2729
- first_name: Marco
full_name: Grilli, Marco
last_name: Grilli
- first_name: Brigitte
full_name: Leridon, Brigitte
last_name: Leridon
- first_name: Sergio
full_name: Caprara, Sergio
last_name: Caprara
citation:
ama: Brighi P, Grilli M, Leridon B, Caprara S. Effect of anomalous diffusion of
fluctuating Cooper pairs on the density of states of superconducting NbN thin
films. Physical Review B. 2019;100(17). doi:10.1103/PhysRevB.100.174518
apa: Brighi, P., Grilli, M., Leridon, B., & Caprara, S. (2019). Effect of anomalous
diffusion of fluctuating Cooper pairs on the density of states of superconducting
NbN thin films. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.100.174518
chicago: Brighi, Pietro, Marco Grilli, Brigitte Leridon, and Sergio Caprara. “Effect
of Anomalous Diffusion of Fluctuating Cooper Pairs on the Density of States of
Superconducting NbN Thin Films.” Physical Review B. American Physical Society,
2019. https://doi.org/10.1103/PhysRevB.100.174518.
ieee: P. Brighi, M. Grilli, B. Leridon, and S. Caprara, “Effect of anomalous diffusion
of fluctuating Cooper pairs on the density of states of superconducting NbN thin
films,” Physical Review B, vol. 100, no. 17. American Physical Society,
2019.
ista: Brighi P, Grilli M, Leridon B, Caprara S. 2019. Effect of anomalous diffusion
of fluctuating Cooper pairs on the density of states of superconducting NbN thin
films. Physical Review B. 100(17), 174518.
mla: Brighi, Pietro, et al. “Effect of Anomalous Diffusion of Fluctuating Cooper
Pairs on the Density of States of Superconducting NbN Thin Films.” Physical
Review B, vol. 100, no. 17, 174518, American Physical Society, 2019, doi:10.1103/PhysRevB.100.174518.
short: P. Brighi, M. Grilli, B. Leridon, S. Caprara, Physical Review B 100 (2019).
date_created: 2019-12-22T23:00:41Z
date_published: 2019-11-25T00:00:00Z
date_updated: 2024-02-28T13:14:08Z
day: '25'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.100.174518
external_id:
arxiv:
- '1907.13579'
isi:
- '000498845700006'
intvolume: ' 100'
isi: 1
issue: '17'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1907.13579
month: '11'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Effect of anomalous diffusion of fluctuating Cooper pairs on the density of
states of superconducting NbN thin films
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 100
year: '2019'
...
---
_id: '5906'
abstract:
- lang: eng
text: We introduce a simple, exactly solvable strong-randomness renormalization
group (RG) model for the many-body localization (MBL) transition in one dimension.
Our approach relies on a family of RG flows parametrized by the asymmetry between
thermal and localized phases. We identify the physical MBL transition in the limit
of maximal asymmetry, reflecting the instability of MBL against rare thermal inclusions.
We find a critical point that is localized with power-law distributed thermal
inclusions. The typical size of critical inclusions remains finite at the transition,
while the average size is logarithmically diverging. We propose a two-parameter
scaling theory for the many-body localization transition that falls into the Kosterlitz-Thouless
universality class, with the MBL phase corresponding to a stable line of fixed
points with multifractal behavior.
article_number: '040601'
article_processing_charge: No
article_type: original
author:
- first_name: Anna
full_name: Goremykina, Anna
last_name: Goremykina
- first_name: Romain
full_name: Vasseur, Romain
last_name: Vasseur
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
citation:
ama: Goremykina A, Vasseur R, Serbyn M. Analytically solvable renormalization group
for the many-body localization transition. Physical Review Letters. 2019;122(4).
doi:10.1103/physrevlett.122.040601
apa: Goremykina, A., Vasseur, R., & Serbyn, M. (2019). Analytically solvable
renormalization group for the many-body localization transition. Physical Review
Letters. American Physical Society. https://doi.org/10.1103/physrevlett.122.040601
chicago: Goremykina, Anna, Romain Vasseur, and Maksym Serbyn. “Analytically Solvable
Renormalization Group for the Many-Body Localization Transition.” Physical
Review Letters. American Physical Society, 2019. https://doi.org/10.1103/physrevlett.122.040601.
ieee: A. Goremykina, R. Vasseur, and M. Serbyn, “Analytically solvable renormalization
group for the many-body localization transition,” Physical Review Letters,
vol. 122, no. 4. American Physical Society, 2019.
ista: Goremykina A, Vasseur R, Serbyn M. 2019. Analytically solvable renormalization
group for the many-body localization transition. Physical Review Letters. 122(4),
040601.
mla: Goremykina, Anna, et al. “Analytically Solvable Renormalization Group for the
Many-Body Localization Transition.” Physical Review Letters, vol. 122,
no. 4, 040601, American Physical Society, 2019, doi:10.1103/physrevlett.122.040601.
short: A. Goremykina, R. Vasseur, M. Serbyn, Physical Review Letters 122 (2019).
date_created: 2019-02-01T08:22:28Z
date_published: 2019-02-01T00:00:00Z
date_updated: 2024-02-28T13:13:38Z
day: '01'
department:
- _id: MaSe
doi: 10.1103/physrevlett.122.040601
external_id:
arxiv:
- '1807.04285'
isi:
- '000456783700001'
intvolume: ' 122'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1807.04285
month: '02'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Analytically solvable renormalization group for the many-body localization
transition
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 122
year: '2019'
...
---
_id: '46'
abstract:
- lang: eng
text: We analyze a disordered central spin model, where a central spin interacts
equally with each spin in a periodic one-dimensional (1D) random-field Heisenberg
chain. If the Heisenberg chain is initially in the many-body localized (MBL) phase,
we find that the coupling to the central spin suffices to delocalize the chain
for a substantial range of coupling strengths. We calculate the phase diagram
of the model and identify the phase boundary between the MBL and ergodic phase.
Within the localized phase, the central spin significantly enhances the rate of
the logarithmic entanglement growth and its saturation value. We attribute the
increase in entanglement entropy to a nonextensive enhancement of magnetization
fluctuations induced by the central spin. Finally, we demonstrate that correlation
functions of the central spin can be utilized to distinguish between MBL and ergodic
phases of the 1D chain. Hence, we propose the use of a central spin as a possible
experimental probe to identify the MBL phase.
acknowledgement: F.P. acknowledges the sup- port of the DFG Research Unit FOR 1807
through Grants No. PO 1370/2-1 and No. TRR80, the Nanosystems Initiative Munich
(NIM) by the German Excellence Initiative, and the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation programme (Grant
Agreement No. 771537). N.Y.Y. acknowledges support from the NSF (PHY-1654740), the
ARO STIR program, and a Google research award.
article_number: '161122'
article_processing_charge: No
article_type: original
author:
- first_name: Daniel
full_name: Hetterich, Daniel
last_name: Hetterich
- first_name: Norman
full_name: Yao, Norman
last_name: Yao
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Frank
full_name: Pollmann, Frank
last_name: Pollmann
- first_name: Björn
full_name: Trauzettel, Björn
last_name: Trauzettel
citation:
ama: Hetterich D, Yao N, Serbyn M, Pollmann F, Trauzettel B. Detection and characterization
of many-body localization in central spin models. Physical Review B. 2018;98(16).
doi:10.1103/PhysRevB.98.161122
apa: Hetterich, D., Yao, N., Serbyn, M., Pollmann, F., & Trauzettel, B. (2018).
Detection and characterization of many-body localization in central spin models.
Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.98.161122
chicago: Hetterich, Daniel, Norman Yao, Maksym Serbyn, Frank Pollmann, and Björn
Trauzettel. “Detection and Characterization of Many-Body Localization in Central
Spin Models.” Physical Review B. American Physical Society, 2018. https://doi.org/10.1103/PhysRevB.98.161122.
ieee: D. Hetterich, N. Yao, M. Serbyn, F. Pollmann, and B. Trauzettel, “Detection
and characterization of many-body localization in central spin models,” Physical
Review B, vol. 98, no. 16. American Physical Society, 2018.
ista: Hetterich D, Yao N, Serbyn M, Pollmann F, Trauzettel B. 2018. Detection and
characterization of many-body localization in central spin models. Physical Review
B. 98(16), 161122.
mla: Hetterich, Daniel, et al. “Detection and Characterization of Many-Body Localization
in Central Spin Models.” Physical Review B, vol. 98, no. 16, 161122, American
Physical Society, 2018, doi:10.1103/PhysRevB.98.161122.
short: D. Hetterich, N. Yao, M. Serbyn, F. Pollmann, B. Trauzettel, Physical Review
B 98 (2018).
date_created: 2018-12-11T11:44:20Z
date_published: 2018-10-15T00:00:00Z
date_updated: 2023-09-11T12:55:03Z
day: '15'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.98.161122
external_id:
arxiv:
- '1806.08316'
isi:
- '000448596500002'
intvolume: ' 98'
isi: 1
issue: '16'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1806.08316
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_status: published
publisher: American Physical Society
publist_id: '8008'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Detection and characterization of many-body localization in central spin models
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 98
year: '2018'
...
---
_id: '289'
abstract:
- lang: eng
text: We report on quantum capacitance measurements of high quality, graphite- and
hexagonal boron nitride encapsulated Bernal stacked trilayer graphene devices.
At zero applied magnetic field, we observe a number of electron density- and electrical
displacement-tuned features in the electronic compressibility associated with
changes in Fermi surface topology. At high displacement field and low density,
strong trigonal warping gives rise to emergent Dirac gullies centered near the
corners of the hexagonal Brillouin and related by three fold rotation symmetry.
At low magnetic fields of B=1.25~T, the gullies manifest as a change in the degeneracy
of the Landau levels from two to three. Weak incompressible states are also observed
at integer filling within these triplets Landau levels, which a Hartree-Fock analysis
indicates are associated with Coulomb-driven nematic phases that spontaneously
break rotation symmetry.
acknowledgement: The experimental work at UCSB was funded by the National Science
Foundation under Grant No. DMR- 1654186. Work at Columbia was supported by the National
Science Foundation under Grant No. DMR- 1507788. K. W. and T. T. acknowledge support
from the Elemental Strategy Initiative conducted by the Ministry of Education, Culture,
Sports, Science and Technology, Japan, and the Japan Society for the Promotion of
Science KAKENHI Grant No. JP15K21722. E. M. S. acknowledges the support of the Elings
Fellowship from the California Nanosystems Institute at the University of California,
Santa Barbara. A. F. Y. acknowledges the support of the David and Lucile Packard
foundation and the Sloan Foundation. Measurements made use of a dilution refrigerator
funded through the Major Research Instrumentation program of the U.S. National Science
Foundation under Grant No. DMR- 1531389, and the MRL Shared Experimental Facilities,
which are supported by the MRSEC Program of the U.S. National Science Foundation
under Grant No. DMR- 1720256.
article_number: '167601'
article_processing_charge: No
article_type: original
author:
- first_name: Alexander
full_name: Zibrov, Alexander
last_name: Zibrov
- first_name: Rao
full_name: Peng, Rao
id: 47C23AC6-02D0-11E9-BD0E-99399A5D3DEB
last_name: Peng
orcid: 0000-0003-1250-0021
- first_name: Carlos
full_name: Kometter, Carlos
last_name: Kometter
- first_name: Jia
full_name: Li, Jia
last_name: Li
- first_name: Cory
full_name: Dean, Cory
last_name: Dean
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: Zibrov A, Rao P, Kometter C, et al. Emergent dirac gullies and gully-symmetry-breaking
quantum hall states in ABA trilayer graphene. Physical Review Letters.
2018;121(16). doi:10.1103/PhysRevLett.121.167601
apa: Zibrov, A., Rao, P., Kometter, C., Li, J., Dean, C., Taniguchi, T., … Young,
A. (2018). Emergent dirac gullies and gully-symmetry-breaking quantum hall states
in ABA trilayer graphene. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/PhysRevLett.121.167601
chicago: Zibrov, Alexander, Peng Rao, Carlos Kometter, Jia Li, Cory Dean, Takashi
Taniguchi, Kenji Watanabe, Maksym Serbyn, and Andrea Young. “Emergent Dirac Gullies
and Gully-Symmetry-Breaking Quantum Hall States in ABA Trilayer Graphene.” Physical
Review Letters. American Physical Society, 2018. https://doi.org/10.1103/PhysRevLett.121.167601.
ieee: A. Zibrov et al., “Emergent dirac gullies and gully-symmetry-breaking
quantum hall states in ABA trilayer graphene,” Physical Review Letters,
vol. 121, no. 16. American Physical Society, 2018.
ista: Zibrov A, Rao P, Kometter C, Li J, Dean C, Taniguchi T, Watanabe K, Serbyn
M, Young A. 2018. Emergent dirac gullies and gully-symmetry-breaking quantum hall
states in ABA trilayer graphene. Physical Review Letters. 121(16), 167601.
mla: Zibrov, Alexander, et al. “Emergent Dirac Gullies and Gully-Symmetry-Breaking
Quantum Hall States in ABA Trilayer Graphene.” Physical Review Letters,
vol. 121, no. 16, 167601, American Physical Society, 2018, doi:10.1103/PhysRevLett.121.167601.
short: A. Zibrov, P. Rao, C. Kometter, J. Li, C. Dean, T. Taniguchi, K. Watanabe,
M. Serbyn, A. Young, Physical Review Letters 121 (2018).
date_created: 2018-12-11T11:45:38Z
date_published: 2018-10-19T00:00:00Z
date_updated: 2023-09-11T13:39:50Z
day: '19'
department:
- _id: MaSe
doi: 10.1103/PhysRevLett.121.167601
external_id:
arxiv:
- '1805.01038'
isi:
- '000447307500007'
intvolume: ' 121'
isi: 1
issue: '16'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1805.01038
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Emergent dirac gullies and gully-symmetry-breaking quantum hall states in ABA
trilayer graphene
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 121
year: '2018'
...
---
_id: '5767'
abstract:
- lang: eng
text: 'Cuprate superconductors have long been thought of as having strong electronic
correlations but negligible spin-orbit coupling. Using spin- and angle-resolved
photoemission spectroscopy, we discovered that one of the most studied cuprate
superconductors, Bi2212, has a nontrivial spin texture with a spin-momentum locking
that circles the Brillouin zone center and a spin-layer locking that allows states
of opposite spin to be localized in different parts of the unit cell. Our findings
pose challenges for the vast majority of models of cuprates, such as the Hubbard
model and its variants, where spin-orbit interaction has been mostly neglected,
and open the intriguing question of how the high-temperature superconducting state
emerges in the presence of this nontrivial spin texture. '
acknowledgement: ' M.S. was supported by the Gordon and Betty Moore Foundation s EPiQS
Initiative through grant GBMF4307'
article_processing_charge: No
article_type: original
author:
- first_name: Kenneth
full_name: Gotlieb, Kenneth
last_name: Gotlieb
- first_name: Chiu-Yun
full_name: Lin, Chiu-Yun
last_name: Lin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Wentao
full_name: Zhang, Wentao
last_name: Zhang
- first_name: Christopher L.
full_name: Smallwood, Christopher L.
last_name: Smallwood
- first_name: Christopher
full_name: Jozwiak, Christopher
last_name: Jozwiak
- first_name: Hiroshi
full_name: Eisaki, Hiroshi
last_name: Eisaki
- first_name: Zahid
full_name: Hussain, Zahid
last_name: Hussain
- first_name: Ashvin
full_name: Vishwanath, Ashvin
last_name: Vishwanath
- first_name: Alessandra
full_name: Lanzara, Alessandra
last_name: Lanzara
citation:
ama: Gotlieb K, Lin C-Y, Serbyn M, et al. Revealing hidden spin-momentum locking
in a high-temperature cuprate superconductor. Science. 2018;362(6420):1271-1275.
doi:10.1126/science.aao0980
apa: Gotlieb, K., Lin, C.-Y., Serbyn, M., Zhang, W., Smallwood, C. L., Jozwiak,
C., … Lanzara, A. (2018). Revealing hidden spin-momentum locking in a high-temperature
cuprate superconductor. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.aao0980
chicago: Gotlieb, Kenneth, Chiu-Yun Lin, Maksym Serbyn, Wentao Zhang, Christopher
L. Smallwood, Christopher Jozwiak, Hiroshi Eisaki, Zahid Hussain, Ashvin Vishwanath,
and Alessandra Lanzara. “Revealing Hidden Spin-Momentum Locking in a High-Temperature
Cuprate Superconductor.” Science. American Association for the Advancement
of Science, 2018. https://doi.org/10.1126/science.aao0980.
ieee: K. Gotlieb et al., “Revealing hidden spin-momentum locking in a high-temperature
cuprate superconductor,” Science, vol. 362, no. 6420. American Association
for the Advancement of Science, pp. 1271–1275, 2018.
ista: Gotlieb K, Lin C-Y, Serbyn M, Zhang W, Smallwood CL, Jozwiak C, Eisaki H,
Hussain Z, Vishwanath A, Lanzara A. 2018. Revealing hidden spin-momentum locking
in a high-temperature cuprate superconductor. Science. 362(6420), 1271–1275.
mla: Gotlieb, Kenneth, et al. “Revealing Hidden Spin-Momentum Locking in a High-Temperature
Cuprate Superconductor.” Science, vol. 362, no. 6420, American Association
for the Advancement of Science, 2018, pp. 1271–75, doi:10.1126/science.aao0980.
short: K. Gotlieb, C.-Y. Lin, M. Serbyn, W. Zhang, C.L. Smallwood, C. Jozwiak, H.
Eisaki, Z. Hussain, A. Vishwanath, A. Lanzara, Science 362 (2018) 1271–1275.
date_created: 2018-12-19T14:53:50Z
date_published: 2018-12-14T00:00:00Z
date_updated: 2023-09-18T08:11:56Z
day: '14'
department:
- _id: MaSe
doi: 10.1126/science.aao0980
external_id:
isi:
- '000452994400048'
intvolume: ' 362'
isi: 1
issue: '6420'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1126/science.aao0980
month: '12'
oa: 1
oa_version: Published Version
page: 1271-1275
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Revealing hidden spin-momentum locking in a high-temperature cuprate superconductor
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 362
year: '2018'
...
---
_id: '327'
abstract:
- lang: eng
text: Many-body quantum systems typically display fast dynamics and ballistic spreading
of information. Here we address the open problem of how slow the dynamics can
be after a generic breaking of integrability by local interactions. We develop
a method based on degenerate perturbation theory that reveals slow dynamical regimes
and delocalization processes in general translation invariant models, along with
accurate estimates of their delocalization time scales. Our results shed light
on the fundamental questions of the robustness of quantum integrable systems and
the possibility of many-body localization without disorder. As an example, we
construct a large class of one-dimensional lattice models where, despite the absence
of asymptotic localization, the transient dynamics is exceptionally slow, i.e.,
the dynamics is indistinguishable from that of many-body localized systems for
the system sizes and time scales accessible in experiments and numerical simulations.
acknowledgement: 'We thank F. Huveneers for useful discussions. Z.P. and A.M. acknowledge
support by EPSRC Grant No. EP/P009409/1 and and the Royal Society Research Grant
No. RG160635. Statement of compliance with EPSRC policy framework on research data:
This publication is theoretical work that does not require supporting research data.
D.A. acknowledges support by the Swiss National Science Foundation. M.Z., M.M. and
T.P. acknowledge Grants J1-7279 (M.Z.) and N1-0025 (M.M. and T.P.) of Slovenian
Research Agency, and Advanced Grant of European Research Council, Grant No. 694544
- OMNES (T.P.).'
article_number: '104307'
article_processing_charge: No
author:
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Marko
full_name: Žnidarič, Marko
last_name: Žnidarič
- first_name: Mariya
full_name: Medvedyeva, Mariya
last_name: Medvedyeva
- first_name: Dmitry
full_name: Abanin, Dmitry
last_name: Abanin
- first_name: Tomaž
full_name: Prosen, Tomaž
last_name: Prosen
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
citation:
ama: Michailidis A, Žnidarič M, Medvedyeva M, Abanin D, Prosen T, Papić Z. Slow
dynamics in translation-invariant quantum lattice models. Physical Review B.
2018;97(10). doi:10.1103/PhysRevB.97.104307
apa: Michailidis, A., Žnidarič, M., Medvedyeva, M., Abanin, D., Prosen, T., &
Papić, Z. (2018). Slow dynamics in translation-invariant quantum lattice models.
Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.97.104307
chicago: Michailidis, Alexios, Marko Žnidarič, Mariya Medvedyeva, Dmitry Abanin,
Tomaž Prosen, and Zlatko Papić. “Slow Dynamics in Translation-Invariant Quantum
Lattice Models.” Physical Review B. American Physical Society, 2018. https://doi.org/10.1103/PhysRevB.97.104307.
ieee: A. Michailidis, M. Žnidarič, M. Medvedyeva, D. Abanin, T. Prosen, and Z. Papić,
“Slow dynamics in translation-invariant quantum lattice models,” Physical Review
B, vol. 97, no. 10. American Physical Society, 2018.
ista: Michailidis A, Žnidarič M, Medvedyeva M, Abanin D, Prosen T, Papić Z. 2018.
Slow dynamics in translation-invariant quantum lattice models. Physical Review
B. 97(10), 104307.
mla: Michailidis, Alexios, et al. “Slow Dynamics in Translation-Invariant Quantum
Lattice Models.” Physical Review B, vol. 97, no. 10, 104307, American Physical
Society, 2018, doi:10.1103/PhysRevB.97.104307.
short: A. Michailidis, M. Žnidarič, M. Medvedyeva, D. Abanin, T. Prosen, Z. Papić,
Physical Review B 97 (2018).
date_created: 2018-12-11T11:45:50Z
date_published: 2018-03-19T00:00:00Z
date_updated: 2023-09-18T09:31:46Z
day: '19'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.97.104307
external_id:
isi:
- '000427798800005'
intvolume: ' 97'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1706.05026
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_status: published
publisher: American Physical Society
publist_id: '7538'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Slow dynamics in translation-invariant quantum lattice models
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 97
year: '2018'
...
---
_id: '296'
abstract:
- lang: eng
text: The thermodynamic description of many-particle systems rests on the assumption
of ergodicity, the ability of a system to explore all allowed configurations in
the phase space. Recent studies on many-body localization have revealed the existence
of systems that strongly violate ergodicity in the presence of quenched disorder.
Here, we demonstrate that ergodicity can be weakly broken by a different mechanism,
arising from the presence of special eigenstates in the many-body spectrum that
are reminiscent of quantum scars in chaotic non-interacting systems. In the single-particle
case, quantum scars correspond to wavefunctions that concentrate in the vicinity
of unstable periodic classical trajectories. We show that many-body scars appear
in the Fibonacci chain, a model with a constrained local Hilbert space that has
recently been experimentally realized in a Rydberg-atom quantum simulator. The
quantum scarred eigenstates are embedded throughout the otherwise thermalizing
many-body spectrum but lead to direct experimental signatures, as we show for
periodic recurrences that reproduce those observed in the experiment. Our results
suggest that scarred many-body bands give rise to a new universality class of
quantum dynamics, opening up opportunities for the creation of novel states with
long-lived coherence in systems that are now experimentally realizable.
acknowledgement: C.J.T., A.M. and Z.P. acknowledge support from EPSRC grants EP/P009409/1
and EP/M50807X/1, and Royal Society Research Grant RG160635. D.A. acknowledges support
from the Swiss National Science Foundation.
article_processing_charge: No
article_type: original
author:
- first_name: Christopher
full_name: Turner, Christopher
last_name: Turner
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: Dmitry
full_name: Abanin, Dmitry
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Zlatko
full_name: Papić, Zlatko
last_name: Papić
citation:
ama: Turner C, Michailidis A, Abanin D, Serbyn M, Papić Z. Weak ergodicity breaking
from quantum many-body scars. Nature Physics. 2018;14:745-749. doi:10.1038/s41567-018-0137-5
apa: Turner, C., Michailidis, A., Abanin, D., Serbyn, M., & Papić, Z. (2018).
Weak ergodicity breaking from quantum many-body scars. Nature Physics.
Nature Publishing Group. https://doi.org/10.1038/s41567-018-0137-5
chicago: Turner, Christopher, Alexios Michailidis, Dmitry Abanin, Maksym Serbyn,
and Zlatko Papić. “Weak Ergodicity Breaking from Quantum Many-Body Scars.” Nature
Physics. Nature Publishing Group, 2018. https://doi.org/10.1038/s41567-018-0137-5.
ieee: C. Turner, A. Michailidis, D. Abanin, M. Serbyn, and Z. Papić, “Weak ergodicity
breaking from quantum many-body scars,” Nature Physics, vol. 14. Nature
Publishing Group, pp. 745–749, 2018.
ista: Turner C, Michailidis A, Abanin D, Serbyn M, Papić Z. 2018. Weak ergodicity
breaking from quantum many-body scars. Nature Physics. 14, 745–749.
mla: Turner, Christopher, et al. “Weak Ergodicity Breaking from Quantum Many-Body
Scars.” Nature Physics, vol. 14, Nature Publishing Group, 2018, pp. 745–49,
doi:10.1038/s41567-018-0137-5.
short: C. Turner, A. Michailidis, D. Abanin, M. Serbyn, Z. Papić, Nature Physics
14 (2018) 745–749.
date_created: 2018-12-11T11:45:40Z
date_published: 2018-05-14T00:00:00Z
date_updated: 2023-09-19T10:37:55Z
day: '14'
department:
- _id: MaSe
doi: 10.1038/s41567-018-0137-5
external_id:
isi:
- '000438253600028'
intvolume: ' 14'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://eprints.whiterose.ac.uk/130860/
month: '05'
oa: 1
oa_version: Submitted Version
page: 745 - 749
publication: Nature Physics
publication_status: published
publisher: Nature Publishing Group
publist_id: '7585'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Weak ergodicity breaking from quantum many-body scars
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 14
year: '2018'
...
---
_id: '44'
abstract:
- lang: eng
text: 'Recent realization of a kinetically constrained chain of Rydberg atoms by
Bernien et al., [Nature (London) 551, 579 (2017)] resulted in the observation
of unusual revivals in the many-body quantum dynamics. In our previous work [C.
J. Turner et al., Nat. Phys. 14, 745 (2018)], such dynamics was attributed to
the existence of “quantum scarred” eigenstates in the many-body spectrum of the
experimentally realized model. Here, we present a detailed study of the eigenstate
properties of the same model. We find that the majority of the eigenstates exhibit
anomalous thermalization: the observable expectation values converge to their
Gibbs ensemble values, but parametrically slower compared to the predictions of
the eigenstate thermalization hypothesis (ETH). Amidst the thermalizing spectrum,
we identify nonergodic eigenstates that strongly violate the ETH, whose number
grows polynomially with system size. Previously, the same eigenstates were identified
via large overlaps with certain product states, and were used to explain the revivals
observed in experiment. Here, we find that these eigenstates, in addition to highly
atypical expectation values of local observables, also exhibit subthermal entanglement
entropy that scales logarithmically with the system size. Moreover, we identify
an additional class of quantum scarred eigenstates, and discuss their manifestations
in the dynamics starting from initial product states. We use forward scattering
approximation to describe the structure and physical properties of quantum scarred
eigenstates. Finally, we discuss the stability of quantum scars to various perturbations.
We observe that quantum scars remain robust when the introduced perturbation is
compatible with the forward scattering approximation. In contrast, the perturbations
which most efficiently destroy quantum scars also lead to the restoration of “canonical”
thermalization.'
acknowledged_ssus:
- _id: ScienComp
article_number: '155134'
article_processing_charge: No
author:
- first_name: C J
full_name: Turner, C J
last_name: Turner
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
- first_name: D A
full_name: Abanin, D A
last_name: Abanin
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Z
full_name: Papić, Z
last_name: Papić
citation:
ama: 'Turner CJ, Michailidis A, Abanin DA, Serbyn M, Papić Z. Quantum scarred eigenstates
in a Rydberg atom chain: Entanglement, breakdown of thermalization, and stability
to perturbations. Physical Review B. 2018;98(15). doi:10.1103/PhysRevB.98.155134'
apa: 'Turner, C. J., Michailidis, A., Abanin, D. A., Serbyn, M., & Papić, Z.
(2018). Quantum scarred eigenstates in a Rydberg atom chain: Entanglement, breakdown
of thermalization, and stability to perturbations. Physical Review B. American
Physical Society. https://doi.org/10.1103/PhysRevB.98.155134'
chicago: 'Turner, C J, Alexios Michailidis, D A Abanin, Maksym Serbyn, and Z Papić.
“Quantum Scarred Eigenstates in a Rydberg Atom Chain: Entanglement, Breakdown
of Thermalization, and Stability to Perturbations.” Physical Review B.
American Physical Society, 2018. https://doi.org/10.1103/PhysRevB.98.155134.'
ieee: 'C. J. Turner, A. Michailidis, D. A. Abanin, M. Serbyn, and Z. Papić, “Quantum
scarred eigenstates in a Rydberg atom chain: Entanglement, breakdown of thermalization,
and stability to perturbations,” Physical Review B, vol. 98, no. 15. American
Physical Society, 2018.'
ista: 'Turner CJ, Michailidis A, Abanin DA, Serbyn M, Papić Z. 2018. Quantum scarred
eigenstates in a Rydberg atom chain: Entanglement, breakdown of thermalization,
and stability to perturbations. Physical Review B. 98(15), 155134.'
mla: 'Turner, C. J., et al. “Quantum Scarred Eigenstates in a Rydberg Atom Chain:
Entanglement, Breakdown of Thermalization, and Stability to Perturbations.” Physical
Review B, vol. 98, no. 15, 155134, American Physical Society, 2018, doi:10.1103/PhysRevB.98.155134.'
short: C.J. Turner, A. Michailidis, D.A. Abanin, M. Serbyn, Z. Papić, Physical Review
B 98 (2018).
date_created: 2018-12-11T11:44:19Z
date_published: 2018-10-22T00:00:00Z
date_updated: 2023-10-10T13:28:49Z
day: '22'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.98.155134
external_id:
arxiv:
- '1806.10933'
isi:
- '000447919100001'
intvolume: ' 98'
isi: 1
issue: '15'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1806.10933
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_status: published
publisher: American Physical Society
publist_id: '8010'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Quantum scarred eigenstates in a Rydberg atom chain: Entanglement, breakdown
of thermalization, and stability to perturbations'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 98
year: '2018'
...
---
_id: '724'
abstract:
- lang: eng
text: We investigate the stationary and dynamical behavior of an Anderson localized
chain coupled to a single central bound state. Although this coupling partially
dilutes the Anderson localized peaks towards nearly resonant sites, the most weight
of the original peaks remains unchanged. This leads to multifractal wave functions
with a frozen spectrum of fractal dimensions, which is characteristic for localized
phases in models with power-law hopping. Using a perturbative approach we identify
two different dynamical regimes. At weak couplings to the central site, the transport
of particles and information is logarithmic in time, a feature usually attributed
to many-body localization. We connect such transport to the persistence of the
Poisson statistics of level spacings in parts of the spectrum. In contrast, at
stronger couplings the level repulsion is established in the entire spectrum,
the problem can be mapped to the Fano resonance, and the transport is ballistic.
acknowledgement: "We would like to thank Dmitry Abanin, Christophe De\r\nBeule,
\ Joel Moore, Romain Vasseur, and Norman Yao for\r\nmany stimulating discussions.
\ Financial support has been\r\nprovided by the Deutsche Forschungsgemeinschaft
\ (DFG)\r\nvia Grant No. TR950/8-1, SFB 1170 “ToCoTronics” and the\r\nENB Graduate
\ School on Topological Insulators. M.S. was\r\nsupported by Gordon and Betty
Moore Foundation’s EPiQS\r\nInitiative through Grant No. GBMF4307. F.P. acknowledges\r\nsupport
from the DFG Research Unit FOR 1807 through Grant\r\nNo. PO 1370/2-1."
article_number: '104203'
author:
- first_name: Daniel
full_name: Hetterich, Daniel
last_name: Hetterich
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Fernando
full_name: Domínguez, Fernando
last_name: Domínguez
- first_name: Frank
full_name: Pollmann, Frank
last_name: Pollmann
- first_name: Björn
full_name: Trauzettel, Björn
last_name: Trauzettel
citation:
ama: Hetterich D, Serbyn M, Domínguez F, Pollmann F, Trauzettel B. Noninteracting
central site model localization and logarithmic entanglement growth. Physical
Review B. 2017;96(10). doi:10.1103/PhysRevB.96.104203
apa: Hetterich, D., Serbyn, M., Domínguez, F., Pollmann, F., & Trauzettel, B.
(2017). Noninteracting central site model localization and logarithmic entanglement
growth. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.96.104203
chicago: Hetterich, Daniel, Maksym Serbyn, Fernando Domínguez, Frank Pollmann, and
Björn Trauzettel. “Noninteracting Central Site Model Localization and Logarithmic
Entanglement Growth.” Physical Review B. American Physical Society, 2017.
https://doi.org/10.1103/PhysRevB.96.104203.
ieee: D. Hetterich, M. Serbyn, F. Domínguez, F. Pollmann, and B. Trauzettel, “Noninteracting
central site model localization and logarithmic entanglement growth,” Physical
Review B, vol. 96, no. 10. American Physical Society, 2017.
ista: Hetterich D, Serbyn M, Domínguez F, Pollmann F, Trauzettel B. 2017. Noninteracting
central site model localization and logarithmic entanglement growth. Physical
Review B. 96(10), 104203.
mla: Hetterich, Daniel, et al. “Noninteracting Central Site Model Localization and
Logarithmic Entanglement Growth.” Physical Review B, vol. 96, no. 10, 104203,
American Physical Society, 2017, doi:10.1103/PhysRevB.96.104203.
short: D. Hetterich, M. Serbyn, F. Domínguez, F. Pollmann, B. Trauzettel, Physical
Review B 96 (2017).
date_created: 2018-12-11T11:48:09Z
date_published: 2017-09-13T00:00:00Z
date_updated: 2021-01-12T08:12:35Z
day: '13'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.96.104203
intvolume: ' 96'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1701.02744
month: '09'
oa: 1
oa_version: Submitted Version
publication: Physical Review B
publication_identifier:
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
publist_id: '6955'
quality_controlled: '1'
scopus_import: 1
status: public
title: Noninteracting central site model localization and logarithmic entanglement
growth
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 96
year: '2017'
...
---
_id: '834'
abstract:
- lang: eng
text: 'Thermal and many-body localized phases are separated by a dynamical phase
transition of a new kind. We analyze the distribution of off-diagonal matrix elements
of local operators across this transition in two different models of disordered
spin chains. We show that the behavior of matrix elements can be used to characterize
the breakdown of thermalization and to extract the many-body Thouless energy.
We find that upon increasing the disorder strength the system enters a critical
region around the many-body localization transition. The properties of the system
in this region are: (i) the Thouless energy becomes smaller than the level spacing,
(ii) the matrix elements show critical dependence on the energy difference, and
(iii) the matrix elements, viewed as amplitudes of a fictitious wave function,
exhibit strong multifractality. This critical region decreases with the system
size, which we interpret as evidence for a diverging correlation length at the
many-body localization transition. Our findings show that the correlation length
becomes larger than the accessible system sizes in a broad range of disorder strength
values and shed light on the critical behavior near the many-body localization
transition.'
acknowledgement: We acknowledge useful discussions with V. Kravtsov, T. Grover,
and R. Vasseur. M.S. was supported by Gordon and Betty Moore Foundation’s EPiQS
Initiative through Grant GBMF4307. M.S. and D.A. acknowledge hospitality of KITP, where parts of
this work were completed (supported in part by the National Science Foundation under
Grant No. NSF PHY11-25915)
article_number: '104201'
article_processing_charge: No
author:
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Papic
full_name: Zlatko, Papic
last_name: Zlatko
- first_name: Dmitry
full_name: Abanin, Dmitry
last_name: Abanin
citation:
ama: Serbyn M, Zlatko P, Abanin D. Thouless energy and multifractality across the
many-body localization transition. Physical Review B - Condensed Matter and
Materials Physics. 2017;96(10). doi:10.1103/PhysRevB.96.104201
apa: Serbyn, M., Zlatko, P., & Abanin, D. (2017). Thouless energy and multifractality
across the many-body localization transition. Physical Review B - Condensed
Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.96.104201
chicago: Serbyn, Maksym, Papic Zlatko, and Dmitry Abanin. “Thouless Energy and Multifractality
across the Many-Body Localization Transition.” Physical Review B - Condensed
Matter and Materials Physics. American Physical Society, 2017. https://doi.org/10.1103/PhysRevB.96.104201.
ieee: M. Serbyn, P. Zlatko, and D. Abanin, “Thouless energy and multifractality
across the many-body localization transition,” Physical Review B - Condensed
Matter and Materials Physics, vol. 96, no. 10. American Physical Society,
2017.
ista: Serbyn M, Zlatko P, Abanin D. 2017. Thouless energy and multifractality across
the many-body localization transition. Physical Review B - Condensed Matter and
Materials Physics. 96(10), 104201.
mla: Serbyn, Maksym, et al. “Thouless Energy and Multifractality across the Many-Body
Localization Transition.” Physical Review B - Condensed Matter and Materials
Physics, vol. 96, no. 10, 104201, American Physical Society, 2017, doi:10.1103/PhysRevB.96.104201.
short: M. Serbyn, P. Zlatko, D. Abanin, Physical Review B - Condensed Matter and
Materials Physics 96 (2017).
date_created: 2018-12-11T11:48:45Z
date_published: 2017-09-06T00:00:00Z
date_updated: 2023-09-26T15:51:54Z
day: '06'
department:
- _id: MaSe
doi: 10.1103/PhysRevB.96.104201
external_id:
isi:
- '000409429300004'
intvolume: ' 96'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1610.02389
month: '09'
oa: 1
oa_version: Submitted Version
publication: Physical Review B - Condensed Matter and Materials Physics
publication_identifier:
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
publist_id: '6814'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Thouless energy and multifractality across the many-body localization transition
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 96
year: '2017'
...