---
_id: '19885'
abstract:
- lang: eng
text: This .zip file contains the data to reproduce the figures and supplementary
figures of "Automated All-RF Tuning for Spin Qubit Readout and Control" by Cornelius
Carlsson and Jaime Saez-Mollejo et al.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: 'The authors would like to thank Barnaby van Straaten, Jonas Schuff,
Daniel Jirovec and Hanifa Tidjani for fruitful discussions. This research was supported
by the Scientific Service Units of ISTA through resources provided by the MIBA Machine
Shop and the Nanofabrication Facility. G.K. acknowledges support from the NOMIS
Foundation, the HORIZON-RIA (project no. 101069515) and the FWF Projects (DOIs:
10.55776/F86 and 10.55776/I5060). N.A. acknowledges support from the European Research
Council (grant agreement 948932), and the Royal Society (grant no. URF/R1/191150).
This project received support from the US Army Research Office (ARO) under Award
No. W911NF-24-2-0043. C.C. acknowledges support from the UKRI Doctoral Training
Partnership related to EP/W524311/1 (project ref. 2887634).'
article_processing_charge: No
author:
- first_name: Jaime
full_name: Saez Mollejo, Jaime
id: e0390f72-f6e0-11ea-865d-862393336714
last_name: Saez Mollejo
citation:
ama: Saez Mollejo J. Automated All-RF Tuning for Spin Qubit Readout and Control.
2025. doi:10.15479/AT:ISTA:19885
apa: Saez Mollejo, J. (2025). Automated All-RF Tuning for Spin Qubit Readout and
Control. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:19885
chicago: Saez Mollejo, Jaime. “Automated All-RF Tuning for Spin Qubit Readout and
Control.” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT:ISTA:19885.
ieee: J. Saez Mollejo, “Automated All-RF Tuning for Spin Qubit Readout and Control.”
Institute of Science and Technology Austria, 2025.
ista: Saez Mollejo J. 2025. Automated All-RF Tuning for Spin Qubit Readout and Control,
Institute of Science and Technology Austria, 10.15479/AT:ISTA:19885.
mla: Saez Mollejo, Jaime. Automated All-RF Tuning for Spin Qubit Readout and
Control. Institute of Science and Technology Austria, 2025, doi:10.15479/AT:ISTA:19885.
short: J. Saez Mollejo, (2025).
contributor:
- contributor_type: researcher
first_name: Cornelius
last_name: Carlsson
- contributor_type: researcher
first_name: 'Federico '
last_name: Fedele
- contributor_type: researcher
first_name: Stefano
last_name: Calcaterra
- contributor_type: researcher
first_name: ' Daniel '
last_name: Chrastina
- contributor_type: researcher
first_name: 'Giovanni '
last_name: Isella
- contributor_type: researcher
first_name: Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- contributor_type: researcher
first_name: Natalia
last_name: Ares
corr_author: '1'
date_created: 2025-06-24T06:56:03Z
date_published: 2025-06-01T00:00:00Z
date_updated: 2025-07-01T07:19:26Z
day: '01'
ddc:
- '530'
department:
- _id: GradSch
- _id: GeKa
doi: 10.15479/AT:ISTA:19885
file:
- access_level: open_access
checksum: eff1ae9e46599fdfab8da00a2ca3c289
content_type: application/x-zip-compressed
creator: jsaezmol
date_created: 2025-06-24T15:14:13Z
date_updated: 2025-06-24T15:14:13Z
file_id: '19893'
file_name: DatasetsPaper.zip
file_size: 3404814792
relation: main_file
success: 1
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checksum: 21840ceac04d677a799b8e5bd919804f
content_type: text/plain
creator: jsaezmol
date_created: 2025-06-25T07:11:52Z
date_updated: 2025-06-25T07:11:52Z
file_id: '19899'
file_name: README.txt
file_size: 622
relation: main_file
success: 1
file_date_updated: 2025-06-25T07:11:52Z
has_accepted_license: '1'
license: https://creativecommons.org/licenses/by/4.0/
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452
grant_number: '101069515'
name: Integrated Germanium Quantum Technology
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e
grant_number: F8606
name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems:
Conventional and unconventional topological superconductors'
publisher: Institute of Science and Technology Austria
status: public
title: Automated All-RF Tuning for Spin Qubit Readout and Control
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: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '20730'
abstract:
- lang: eng
text: Radio-frequency measurements could satisfy DiVincenzo’s readout criterion
in future large-scale solid-state quantum processors, as they allow for high bandwidths
and frequency multiplexing. However, the scalability potential of this readout
technique can only be leveraged if quantum device tuning is performed using exclusively
radio-frequency measurements, that is, without resorting to current measurements.
We demonstrate an algorithm that performs automatic coarse tuning of double quantum
dots with only radio-frequency measurements by exploiting their bandwidth and
impedance matching. The tuning was completed within a few minutes with minimal
prior knowledge about the device. Our results show that it is possible to eliminate
the need for transport measurements for quantum-dot tuning, paving the way for
more scalable device architectures.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: We thank Nicholas Sim for providing help with the rf cavities and
David Craig for his feedback on the paper. This work was supported by the Royal
Society (URF-R1-191150), the EPSRC National Quantum Technology Hub in Networked
Quantum Information Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1),
EPSRC Platform Grant (EP/R029229/1), the European Research Council (Grant Agreement
948932), the Scientific Service Units of IST Austria through resources provided
by the nanofabrication facility, the FWF-P 30207, and FWF-I 05060 projects, and
Grant No. FQXi-IAF19-01 from the Foundational Questions Institute Fund, a donor-advised
fund of Silicon Valley Community Foundation.
article_number: '054030'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Barnaby
full_name: Van Straaten, Barnaby
last_name: Van Straaten
- first_name: Federico
full_name: Fedele, Federico
last_name: Fedele
- first_name: Florian
full_name: Vigneau, Florian
last_name: Vigneau
- first_name: Joseph
full_name: Hickie, Joseph
last_name: Hickie
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Andrea
full_name: Ballabio, Andrea
last_name: Ballabio
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- first_name: Natalia
full_name: Ares, Natalia
last_name: Ares
citation:
ama: Van Straaten B, Fedele F, Vigneau F, et al. All-rf-based coarse-tuning algorithm
for quantum devices using machine learning. Physical Review Applied. 2025;24(5).
doi:10.1103/v11m-dbhm
apa: Van Straaten, B., Fedele, F., Vigneau, F., Hickie, J., Jirovec, D., Ballabio,
A., … Ares, N. (2025). All-rf-based coarse-tuning algorithm for quantum devices
using machine learning. Physical Review Applied. American Physical Society.
https://doi.org/10.1103/v11m-dbhm
chicago: Van Straaten, Barnaby, Federico Fedele, Florian Vigneau, Joseph Hickie,
Daniel Jirovec, Andrea Ballabio, Daniel Chrastina, Giovanni Isella, Georgios Katsaros,
and Natalia Ares. “All-Rf-Based Coarse-Tuning Algorithm for Quantum Devices Using
Machine Learning.” Physical Review Applied. American Physical Society,
2025. https://doi.org/10.1103/v11m-dbhm.
ieee: B. Van Straaten et al., “All-rf-based coarse-tuning algorithm for quantum
devices using machine learning,” Physical Review Applied, vol. 24, no.
5. American Physical Society, 2025.
ista: Van Straaten B, Fedele F, Vigneau F, Hickie J, Jirovec D, Ballabio A, Chrastina
D, Isella G, Katsaros G, Ares N. 2025. All-rf-based coarse-tuning algorithm for
quantum devices using machine learning. Physical Review Applied. 24(5), 054030.
mla: Van Straaten, Barnaby, et al. “All-Rf-Based Coarse-Tuning Algorithm for Quantum
Devices Using Machine Learning.” Physical Review Applied, vol. 24, no.
5, 054030, American Physical Society, 2025, doi:10.1103/v11m-dbhm.
short: B. Van Straaten, F. Fedele, F. Vigneau, J. Hickie, D. Jirovec, A. Ballabio,
D. Chrastina, G. Isella, G. Katsaros, N. Ares, Physical Review Applied 24 (2025).
date_created: 2025-12-07T23:02:01Z
date_published: 2025-11-01T00:00:00Z
date_updated: 2025-12-09T14:49:35Z
day: '01'
ddc:
- '530'
department:
- _id: GeKa
doi: 10.1103/v11m-dbhm
file:
- access_level: open_access
checksum: 9906b32c7e3c79ed13d05ef88ff15586
content_type: application/pdf
creator: dernst
date_created: 2025-12-09T13:34:38Z
date_updated: 2025-12-09T13:34:38Z
file_id: '20748'
file_name: 2025_PhysReviewApplied_vanStraaten.pdf
file_size: 5754118
relation: main_file
success: 1
file_date_updated: 2025-12-09T13:34:38Z
has_accepted_license: '1'
intvolume: ' 24'
issue: '5'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 2641CE5E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P30207
name: Hole spin orbit qubits in Ge quantum wells
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
publication: Physical Review Applied
publication_identifier:
eissn:
- 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '20750'
relation: research_data
status: public
scopus_import: '1'
status: public
title: All-rf-based coarse-tuning algorithm for quantum devices using machine learning
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: 24
year: '2025'
...
---
APC_amount: 7068 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '19401'
abstract:
- lang: eng
text: High kinetic inductance superconductors are gaining increasing interest for
the realisation of qubits, amplifiers and detectors. Moreover, thanks to their
high impedance, quantum buses made of such materials enable large zero-point fluctuations
of the voltage, boosting the coupling rates to spin and charge qubits. However,
fully exploiting the potential of disordered or granular superconductors is challenging,
as their inductance and, therefore, impedance at high values are difficult to
control. Here, we report a reproducible fabrication of granular aluminium resonators
by developing a wireless ohmmeter, which allows in situ measurements during film
deposition and, therefore, control of the kinetic inductance of granular aluminium
films. Reproducible fabrication of circuits with impedances (inductances) exceeding
13 kΩ (1 nH per square) is now possible. By integrating a 7.9 kΩ resonator with
a germanium double quantum dot, we demonstrate strong charge-photon coupling with
a rate of gc/2π = 566 ± 2 MHz. This broadly applicable method opens the path for
novel qubits and high-fidelity, long-distance two-qubit gates.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: 'We acknowledge Franco De Palma, Mahya Khorramshahi, Fabian Oppliger,
Thomas Reisinger, Pasquale Scarlino and Xiao Xue for helpful discussions. We thank
Simon Robson for proofreading the manuscript. This research was supported by the
Scientific Service Units of ISTA through resources provided by the MIBA Machine
Shop and the Nanofabrication facility. This research and related results were made
possible with the support of the NOMIS Foundation and the HORIZON-RIA 101069515
project. This research was funded in whole or in part by the Austrian Science Fund
(FWF) https://doi.org/10.55776/P32235, https://doi.org/10.55776/I5060 and https://doi.org/10.55776/P36507.
For Open Access purposes, the author has applied a CC BY public copyright license
to any author accepted manuscript version arising from this submission. M.J. acknowledges
funding from FellowQUTE 2024-01. K.R. acknowledges funding from the European Union’s
Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant
Agreement No. 101034413. I.M.P. acknowledges funding from the Deutsche Forschungsgemeinschaft
(DFG - German Research Foundation) under project number 450396347 (GeHoldeQED).
ICN2 acknowledges funding from Generalitat de Catalunya 2021SGR00457. We acknowledge
support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies
(PTI-QTEP+). This research work has been funded by the European Commission - NextGenerationEU
(Regulation EU 2020/2094), through CSIC’s Quantum Technologies Platform (QTEP).
ICN2 is supported by the Severo Ochoa programme from Spanish MCIN/AEI (Grant No.:
CEX2021-001214-S) and is funded by the CERCA Programme/Generalitat de Catalunya.
Part of the present work has been performed in the framework of Universitat Autònoma
de Barcelona Materials Science PhD programme. AGM has received funding from Grant
RYC2021-033479-I funded by MCIN/AEI/10.13039/501100011033 and by European Union
NextGenerationEU/PRTR. M.B. acknowledges support from SUR Generalitat de Catalunya
and the EU Social Fund; project ref. 2020 FI 00103. The authors acknowledge the
use of instrumentation and the technical advice provided by the Joint Electron Microscopy
Centre at ALBA (JEMCA). ICN2 acknowledges funding from Grant IU16-014206 (METCAM-FIB)
funded by the European Union through the European Regional Development Fund (ERDF),
with the support of the Ministry of Research and Universities, Generalitat de Catalunya.
ICN2 is a founding member of e-DREAM60.'
article_number: '2103'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Marian
full_name: Janik, Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
orcid: 0009-0003-9037-8831
- first_name: Kevin Etienne Robert
full_name: Roux, Kevin Etienne Robert
id: 53f93ea2-803f-11ed-ab7e-b283135794ef
last_name: Roux
- first_name: Carla N
full_name: Borja Espinosa, Carla N
id: 18777c01-896a-11ed-bdf8-e4851dc07d16
last_name: Borja Espinosa
- first_name: Oliver
full_name: Sagi, Oliver
id: 71616374-A8E9-11E9-A7CA-09ECE5697425
last_name: Sagi
- first_name: Abdulhamid
full_name: Baghdadi, Abdulhamid
id: 160D87FA-96B5-11E9-BF77-7626E6697425
last_name: Baghdadi
- first_name: Thomas
full_name: Adletzberger, Thomas
id: 38756BB2-F248-11E8-B48F-1D18A9856A87
last_name: Adletzberger
- first_name: Stefano
full_name: Calcaterra, Stefano
last_name: Calcaterra
- first_name: Marc
full_name: Botifoll, Marc
last_name: Botifoll
- first_name: Alba
full_name: Garzón Manjón, Alba
last_name: Garzón Manjón
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Ioan M.
full_name: Pop, Ioan M.
last_name: Pop
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Janik M, Roux KER, Borja Espinosa CN, et al. Strong charge-photon coupling
in planar germanium enabled by granular aluminium superinductors. Nature Communications.
2025;16. doi:10.1038/s41467-025-57252-4
apa: Janik, M., Roux, K. E. R., Borja Espinosa, C. N., Sagi, O., Baghdadi, A., Adletzberger,
T., … Katsaros, G. (2025). Strong charge-photon coupling in planar germanium enabled
by granular aluminium superinductors. Nature Communications. Springer Nature.
https://doi.org/10.1038/s41467-025-57252-4
chicago: Janik, Marian, Kevin Etienne Robert Roux, Carla N Borja Espinosa, Oliver
Sagi, Abdulhamid Baghdadi, Thomas Adletzberger, Stefano Calcaterra, et al. “Strong
Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors.”
Nature Communications. Springer Nature, 2025. https://doi.org/10.1038/s41467-025-57252-4.
ieee: M. Janik et al., “Strong charge-photon coupling in planar germanium
enabled by granular aluminium superinductors,” Nature Communications, vol.
16. Springer Nature, 2025.
ista: Janik M, Roux KER, Borja Espinosa CN, Sagi O, Baghdadi A, Adletzberger T,
Calcaterra S, Botifoll M, Garzón Manjón A, Arbiol J, Chrastina D, Isella G, Pop
IM, Katsaros G. 2025. Strong charge-photon coupling in planar germanium enabled
by granular aluminium superinductors. Nature Communications. 16, 2103.
mla: Janik, Marian, et al. “Strong Charge-Photon Coupling in Planar Germanium Enabled
by Granular Aluminium Superinductors.” Nature Communications, vol. 16,
2103, Springer Nature, 2025, doi:10.1038/s41467-025-57252-4.
short: M. Janik, K.E.R. Roux, C.N. Borja Espinosa, O. Sagi, A. Baghdadi, T. Adletzberger,
S. Calcaterra, M. Botifoll, A. Garzón Manjón, J. Arbiol, D. Chrastina, G. Isella,
I.M. Pop, G. Katsaros, Nature Communications 16 (2025).
corr_author: '1'
date_created: 2025-03-16T23:01:23Z
date_published: 2025-03-01T00:00:00Z
date_updated: 2026-05-20T06:34:51Z
day: '01'
ddc:
- '530'
department:
- _id: GeKa
- _id: JoFi
- _id: M-Shop
doi: 10.1038/s41467-025-57252-4
ec_funded: 1
external_id:
arxiv:
- '2407.03079'
isi:
- '001434774800001'
pmid:
- '40025007'
file:
- access_level: open_access
checksum: a9383dd978ca2c50b7dded6c0bb2cd49
content_type: application/pdf
creator: dernst
date_created: 2025-03-17T10:53:32Z
date_updated: 2025-03-17T10:53:32Z
file_id: '19415'
file_name: 2025_NatureComm_Janik.pdf
file_size: 6364878
relation: main_file
success: 1
file_date_updated: 2025-03-17T10:53:32Z
has_accepted_license: '1'
intvolume: ' 16'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452
grant_number: '101069515'
name: Integrated Germanium Quantum Technology
- _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E
call_identifier: FWF
grant_number: P32235
name: Towards scalable hut wire quantum devices
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: bd8bd29e-d553-11ed-ba76-f0070d4b237a
grant_number: P36507
name: Merging spin and superconducting qubits in planar Ge
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
call_identifier: H2020
grant_number: '101034413'
name: 'IST-BRIDGE: International postdoctoral program'
- _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1
call_identifier: FWF
name: FWF Open Access Fund
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '18144'
relation: earlier_version
status: public
- id: '18886'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Strong charge-photon coupling in planar germanium enabled by granular aluminium
superinductors
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: 16
year: '2025'
...
---
OA_place: repository
OA_type: gold
_id: '18886'
abstract:
- lang: eng
text: Research Data for publication 'Strong charge-photon coupling in planar germanium
enabled by granular aluminium superinductors'
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: 'We acknowledge Franco De Palma, Mahya Khorramshahi, Fabian Oppliger,
Thomas Reisinger, Pasquale Scarlino and Xiao Xue for helpful discussions. We thank
Simon Robson for proofreading the manuscript. This research was supported by the
Scientific Service Units of ISTA through resources provided by the MIBA Machine
Shop and the Nanofabrication facility. This research and related results were made
possible with the support of the NOMIS Foundation and the HORIZON-RIA 101069515
project. This research was funded in whole or in part by the Austrian Science Fund
(FWF) DOI:10.55776/P32235, DOI:10.55776/I5060 and DOI:10.55776/P36507. For Open
Access purposes, the author has applied a CC BY public copyright license to any
author accepted manuscript version arising from this submission. M.J. acknowledges
funding from FellowQUTE 2024-01. I.M.P. acknowledges funding from the Deutsche Forschungsgemeinschaft
(DFG – German Research Foundation) under project number 450396347 (GeHoldeQED).
ICN2 acknowledges funding from Generalitat de Catalunya 2021SGR00457. We acknowledge
support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies
(PTI-QTEP+). This research work has been funded by the European Commission – NextGenerationEU
(Regulation EU 2020/2094), through CSIC''s Quantum Technologies Platform (QTEP).
ICN2 is supported by the Severo Ochoa program from Spanish MCIN/AEI (Grant No.:
CEX2021-001214-S) and is funded by the CERCA Programme/Generalitat de Catalunya.
Part of the present work has been performed in the framework of Universitat Autònoma
de Barcelona Materials Science PhD program. AGM has received funding from Grant
RYC2021-033479-I funded by MCIN/AEI/10.13039/501100011033 and by European Union
NextGenerationEU/PRTR. M.B. acknowledges support from SUR Generalitat de Catalunya
and the EU Social Fund; project ref. 2020 FI 00103. The authors acknowledge the
use of instrumentation and the technical advice provided by the Joint Electron Microscopy
Center at ALBA (JEMCA). ICN2 acknowledges funding from Grant IU16-014206 (METCAM-FIB)
funded by the European Union through the European Regional Development Fund (ERDF),
with the support of the Ministry of Research and Universities, Generalitat de Catalunya.
ICN2 is a founding member of e-DREAM.'
article_processing_charge: No
author:
- first_name: Marian
full_name: Janik, Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
orcid: 0009-0003-9037-8831
citation:
ama: Janik M. Research data for publication “Strong charge-photon coupling in planar
germanium enabled by granular aluminium superinductors.” 2025. doi:10.15479/AT:ISTA:18886
apa: Janik, M. (2025). Research data for publication “Strong charge-photon coupling
in planar germanium enabled by granular aluminium superinductors.” Institute of
Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:18886
chicago: Janik, Marian. “Research Data for Publication ‘Strong Charge-Photon Coupling
in Planar Germanium Enabled by Granular Aluminium Superinductors.’” Institute
of Science and Technology Austria, 2025. https://doi.org/10.15479/AT:ISTA:18886.
ieee: M. Janik, “Research data for publication ‘Strong charge-photon coupling in
planar germanium enabled by granular aluminium superinductors.’” Institute of
Science and Technology Austria, 2025.
ista: Janik M. 2025. Research data for publication ‘Strong charge-photon coupling
in planar germanium enabled by granular aluminium superinductors’, Institute of
Science and Technology Austria, 10.15479/AT:ISTA:18886.
mla: Janik, Marian. Research Data for Publication “Strong Charge-Photon Coupling
in Planar Germanium Enabled by Granular Aluminium Superinductors.” Institute
of Science and Technology Austria, 2025, doi:10.15479/AT:ISTA:18886.
short: M. Janik, (2025).
contributor:
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first_name: Kevin Etienne Robert
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last_name: Roux
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last_name: Adletzberger
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first_name: Stefano
last_name: Calcaterra
- contributor_type: researcher
first_name: Marc
last_name: Botifoll
- contributor_type: researcher
first_name: Alba Garzón
last_name: Manjón
- contributor_type: researcher
first_name: Jordi
last_name: Arbiol
- contributor_type: researcher
first_name: Daniel
last_name: Chrastina
- contributor_type: researcher
first_name: Giovanni
last_name: Isella
- contributor_type: researcher
first_name: Ioan M.
last_name: Pop
- contributor_type: researcher
first_name: Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
corr_author: '1'
date_created: 2025-01-27T09:48:44Z
date_published: 2025-01-27T00:00:00Z
date_updated: 2026-05-20T06:34:50Z
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- _id: GradSch
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title: Research data for publication 'Strong charge-photon coupling in planar germanium
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abstract:
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text: "This .zip file contains the data to reproduce the figures and supplementary
figures of \"Exchange anisotropies in microwave-driven singlet-triplet qubits\"
by Jaime Saez-Mollejo et al.\r\n"
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
acknowledgement: "We thank A. Crippa for helpful discussions. This research was supported
by the Scientific Service Units of ISTA through resources provided by the MIBA Machine
Shop and the Nanofabrication facility. This research and related results were made
possible with the support of the NOMIS Foundation, the HORIZON-RIA 101069515 project
and the FWF Projects \r\nwith DOI:10.55776/F86 and DOI:10.55776/I5060. M.R.-R. acknowledges
support from the Netherlands Organization of\r\n scientific Research (NWO) under
Veni grant VI.Veni.212.223. The Research of S.B. and M.R.-R. was sponsored in part
by the Army Research Office and was accomplished under Award Number: W911NF-23-1-0110."
article_processing_charge: No
author:
- first_name: Jaime
full_name: Saez Mollejo, Jaime
id: e0390f72-f6e0-11ea-865d-862393336714
last_name: Saez Mollejo
citation:
ama: Saez Mollejo J. Exchange anisotropies in microwave-driven singlet-triplet qubits.
2025. doi:10.15479/AT:ISTA:19409
apa: Saez Mollejo, J. (2025). Exchange anisotropies in microwave-driven singlet-triplet
qubits. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:19409
chicago: Saez Mollejo, Jaime. “Exchange Anisotropies in Microwave-Driven Singlet-Triplet
Qubits.” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT:ISTA:19409.
ieee: J. Saez Mollejo, “Exchange anisotropies in microwave-driven singlet-triplet
qubits.” Institute of Science and Technology Austria, 2025.
ista: Saez Mollejo J. 2025. Exchange anisotropies in microwave-driven singlet-triplet
qubits, Institute of Science and Technology Austria, 10.15479/AT:ISTA:19409.
mla: Saez Mollejo, Jaime. Exchange Anisotropies in Microwave-Driven Singlet-Triplet
Qubits. Institute of Science and Technology Austria, 2025, doi:10.15479/AT:ISTA:19409.
short: J. Saez Mollejo, (2025).
contributor:
- first_name: Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Yona A
id: fe39122d-06bb-11ec-a33b-9e22b40e40a5
last_name: Schell
- first_name: Josip
id: 3F5D8856-F248-11E8-B48F-1D18A9856A87
last_name: Kukucka
- first_name: Stefano
last_name: Calcaterra
- first_name: 'Daniel '
last_name: Chrastina
- first_name: 'Giovanni '
last_name: Isella
- first_name: Maximilian
last_name: Rimbach-Russ
- first_name: Stefano
last_name: Bosco
- first_name: Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
corr_author: '1'
date_created: 2025-03-17T08:57:09Z
date_published: 2025-03-17T00:00:00Z
date_updated: 2026-05-20T06:42:16Z
day: '17'
ddc:
- '530'
department:
- _id: GradSch
- _id: GeKa
doi: 10.15479/AT:ISTA:19409
file:
- access_level: open_access
checksum: 1f21c8ea2196776aae51cc3a5d00e00b
content_type: application/x-zip-compressed
creator: jsaezmol
date_created: 2025-03-17T08:48:09Z
date_updated: 2025-03-17T08:48:09Z
file_id: '19410'
file_name: AllDataPublished.zip
file_size: 21971911
relation: main_file
success: 1
file_date_updated: 2025-03-17T08:48:09Z
has_accepted_license: '1'
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452
grant_number: '101069515'
name: Integrated Germanium Quantum Technology
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e
grant_number: F8606
name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems:
Conventional and unconventional topological superconductors'
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '19424'
relation: used_in_publication
status: public
status: public
title: Exchange anisotropies in microwave-driven singlet-triplet qubits
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: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...
---
APC_amount: 7068 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '19424'
abstract:
- lang: eng
text: "Hole spin qubits are rapidly emerging as the workhorse of semiconducting
quantum processors because of their large spin-orbit interaction, enabling fast
all-electric operations at low power. However, spin-orbit interaction also causes
non-uniformities in devices, resulting in locally varying qubit energies and site-dependent
anisotropies. While these anisotropies can be used to drive single-spins, if not
properly harnessed, they can hinder the path toward large-scale quantum processors.
Here, we report on microwave-driven singlet-triplet qubits in planar germanium
and use them to investigate the anisotropy of two spins in a double quantum dot.
We show two distinct operating regimes depending on the magnetic field direction.
For in-plane fields, the two spins are largely anisotropic, and electrically tunable,
which enables to measure all the available transitions; coherence times exceeding
3 $\\mu$s are extracted. For out-of-plane fields, they have an isotropic response
but preserve the substantial energy difference required to address the singlet-triplet
qubit. Even in this field direction, where the qubit lifetime\r\nis strongly affected
by nuclear spins, we find 400 ns coherence times. Our work adds a valuable tool
to investigate and harness the anisotropy of spin qubits and can be implemented
in any large-scale NxN device, facilitating the path towards scalable quantum
processors."
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: "We thank A. Crippa for helpful discussions. This research was supported
by the Scientific Service Units of ISTA through resources provided by the MIBA Machine
Shop and the Nanofabrication facility. This research and related results were made
possible with the support of the NOMIS Foundation, the HORIZON-RIA 101069515 project
and the FWF Projects with DOI:10.55776/F86 and DOI:10.55776/I5060. M.R.-R. acknowledges
support from the Netherlands Organization of Scientific Research (NWO) under Veni
grant VI.Veni.212.223. The\r\nResearch of S.B. and M.R.-R. was sponsored in part
by the Army Research Office and was accomplished under Award Number: W911NF-23-1-0110.
The views and conclusions contained in this document are those of the authors and
should not be interpreted as representing the official policies, either expressed
or implied, of the Army Research Office or the U.S. Government. The U.S. Government
is authorized to reproduce and distribute reprints for Government purposes notwithstanding
any copyright notation herein."
article_number: '3862'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Jaime
full_name: Saez Mollejo, Jaime
id: e0390f72-f6e0-11ea-865d-862393336714
last_name: Saez Mollejo
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Yona A
full_name: Schell, Yona A
id: fe39122d-06bb-11ec-a33b-9e22b40e40a5
last_name: Schell
- first_name: Josip
full_name: Kukucka, Josip
id: 3F5D8856-F248-11E8-B48F-1D18A9856A87
last_name: Kukucka
- first_name: Stefano
full_name: Calcaterra, Stefano
last_name: Calcaterra
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Maximilian
full_name: Rimbach-Russ, Maximilian
last_name: Rimbach-Russ
- first_name: Stefano
full_name: Bosco, Stefano
last_name: Bosco
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Saez Mollejo J, Jirovec D, Schell YA, et al. Exchange anisotropies in microwave-driven
singlet-triplet qubits. Nature Communications. 2025;16. doi:10.1038/s41467-025-58969-y
apa: Saez Mollejo, J., Jirovec, D., Schell, Y. A., Kukucka, J., Calcaterra, S.,
Chrastina, D., … Katsaros, G. (2025). Exchange anisotropies in microwave-driven
singlet-triplet qubits. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-025-58969-y
chicago: Saez Mollejo, Jaime, Daniel Jirovec, Yona A Schell, Josip Kukucka, Stefano
Calcaterra, Daniel Chrastina, Giovanni Isella, Maximilian Rimbach-Russ, Stefano
Bosco, and Georgios Katsaros. “Exchange Anisotropies in Microwave-Driven Singlet-Triplet
Qubits.” Nature Communications. Springer Nature, 2025. https://doi.org/10.1038/s41467-025-58969-y.
ieee: J. Saez Mollejo et al., “Exchange anisotropies in microwave-driven
singlet-triplet qubits,” Nature Communications, vol. 16. Springer Nature,
2025.
ista: Saez Mollejo J, Jirovec D, Schell YA, Kukucka J, Calcaterra S, Chrastina D,
Isella G, Rimbach-Russ M, Bosco S, Katsaros G. 2025. Exchange anisotropies in
microwave-driven singlet-triplet qubits. Nature Communications. 16, 3862.
mla: Saez Mollejo, Jaime, et al. “Exchange Anisotropies in Microwave-Driven Singlet-Triplet
Qubits.” Nature Communications, vol. 16, 3862, Springer Nature, 2025, doi:10.1038/s41467-025-58969-y.
short: J. Saez Mollejo, D. Jirovec, Y.A. Schell, J. Kukucka, S. Calcaterra, D. Chrastina,
G. Isella, M. Rimbach-Russ, S. Bosco, G. Katsaros, Nature Communications 16 (2025).
corr_author: '1'
date_created: 2025-03-19T13:28:12Z
date_published: 2025-04-24T00:00:00Z
date_updated: 2026-06-07T22:31:12Z
day: '24'
ddc:
- '530'
department:
- _id: GeKa
doi: 10.1038/s41467-025-58969-y
external_id:
arxiv:
- '2408.03224'
isi:
- '001475587400022'
pmid:
- '40274808'
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checksum: 13fe84cddc9d4e47213bf17acdac70d7
content_type: application/pdf
creator: dernst
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oa_version: Published Version
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grant_number: '101069515'
name: Integrated Germanium Quantum Technology
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grant_number: F8606
name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems:
Conventional and unconventional topological superconductors'
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: 262116AA-B435-11E9-9278-68D0E5697425
name: Hybrid Semiconductor - Superconductor Quantum Devices
- _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1
call_identifier: FWF
name: FWF Open Access Fund
publication: Nature Communications
publication_identifier:
eissn:
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publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on ISTA website
relation: research_data
url: https://ista.ac.at/en/news/the-shadow-of-an-electron/
record:
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status: public
- id: '19836'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Exchange anisotropies in microwave-driven singlet-triplet qubits
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: 16
year: '2025'
...
---
OA_place: publisher
_id: '19836'
abstract:
- lang: eng
text: "Over the past century, researchers have been fascinated by the quantum nature
of the\r\nphysical world, initially striving to understand its fundamental principles
and consequences, and\r\neventually progressing toward engineering systems that
can control and manipulate quantum\r\nproperties. Today, we stand at the dawn
of the quantum technology era. While some quantum\r\ntechnologies follow well-defined
roadmaps, others are still in the exciting and uncertain early\r\nstages of development.
In the fields of quantum computing and quantum simulation, research\r\nis being
conducted across a wide variety of platforms. Each of these demonstrates control
over\r\nquantum properties but also faces challenges in scaling up to the level
of a mature technology.\r\nThis thesis explores some of the fundamental properties
of hole spin qubits in planar germanium.\r\nSemiconductor spin qubits are considered
strong candidates for the realization of quantum\r\nprocessors, owing to their
long relaxation and coherence times, as well as their compatibility\r\nwith existing
semiconductor industry infrastructure. Among these, hole spin qubits in planar\r\ngermanium
are particularly promising. Their advantages include a large effective mass, which\r\neases
fabrication constraints; inherent protection from hyperfine noise; and strong
spin-orbit\r\ninteraction, which enables fast and purely electrical control. However,
spin-orbit coupling also\r\nintroduces site-dependent variability across qubits,
particularly in the g-tensors and spin-flip\r\ntunneling, which might cause that
the quantization axes are not aligned. In this thesis, we\r\ninvestigate the tilt
between the quantization axes of two hole spins hosted in a double quantum\r\ndot
as a function of both the magnetic field direction and various electrostatic configurations,\r\ndemonstrating
that both parameters influence this tilt. We conclude by introducing a machine-learning-assisted
routine to automatically tune baseband spin qubits. This approach may prove\r\nto
be a powerful tool for characterizing spin-orbit effects and gaining deeper insight
into the\r\nphysics governing spin qubit behavior.\r\n"
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
acknowledgement: "This research was supported by the Scientific Service Units of ISTA
through resources provided\r\nby the MIBA Machine Shop and the Nanofabrication facility.
We acknowledge the support from\r\nthe European Commission with the project Integrated
Germanium Quantum Technology (with\r\nDOI:10.3030/101069515), the NOMIS Foundation,
the HORIZON-RIA 101069515 project and\r\nthe FWF Projects Center for Correlated
Quantum Materials and Solid State Quantum Systems:\r\nConventional and unconventional
topological superconductors (with DOI:10.55776/F86) and\r\nHigh impedance circuit
quantum electrodynamics with hole spins (with DOI:10.55776/I5060).\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Jaime
full_name: Saez Mollejo, Jaime
id: e0390f72-f6e0-11ea-865d-862393336714
last_name: Saez Mollejo
citation:
ama: 'Saez Mollejo J. Singlet-triplet qubits in planar Germanium : From exchange
anisotropies to autonomous tuning . 2025. doi:10.15479/AT-ISTA-19836'
apa: 'Saez Mollejo, J. (2025). Singlet-triplet qubits in planar Germanium : From
exchange anisotropies to autonomous tuning . Institute of Science and Technology
Austria. https://doi.org/10.15479/AT-ISTA-19836'
chicago: 'Saez Mollejo, Jaime. “Singlet-Triplet Qubits in Planar Germanium : From
Exchange Anisotropies to Autonomous Tuning .” Institute of Science and Technology
Austria, 2025. https://doi.org/10.15479/AT-ISTA-19836.'
ieee: 'J. Saez Mollejo, “Singlet-triplet qubits in planar Germanium : From exchange
anisotropies to autonomous tuning ,” Institute of Science and Technology Austria,
2025.'
ista: 'Saez Mollejo J. 2025. Singlet-triplet qubits in planar Germanium : From exchange
anisotropies to autonomous tuning . Institute of Science and Technology Austria.'
mla: 'Saez Mollejo, Jaime. Singlet-Triplet Qubits in Planar Germanium : From
Exchange Anisotropies to Autonomous Tuning . Institute of Science and Technology
Austria, 2025, doi:10.15479/AT-ISTA-19836.'
short: 'J. Saez Mollejo, Singlet-Triplet Qubits in Planar Germanium : From Exchange
Anisotropies to Autonomous Tuning , Institute of Science and Technology Austria,
2025.'
corr_author: '1'
date_created: 2025-06-13T09:01:50Z
date_published: 2025-06-13T00:00:00Z
date_updated: 2026-05-20T06:42:16Z
day: '13'
ddc:
- '530'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: GeKa
doi: 10.15479/AT-ISTA-19836
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date_updated: 2026-04-01T22:30:07Z
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creator: jsaezmol
date_created: 2025-06-18T08:50:16Z
date_updated: 2026-04-01T22:30:07Z
embargo: 2026-04-01
file_id: '19851'
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file_date_updated: 2026-04-01T22:30:07Z
has_accepted_license: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: '175'
project:
- _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452
grant_number: '101069515'
name: Integrated Germanium Quantum Technology
- _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e
grant_number: F8606
name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems:
Conventional and unconventional topological superconductors'
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '19424'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
title: 'Singlet-triplet qubits in planar Germanium : From exchange anisotropies to
autonomous tuning '
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: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '18602'
abstract:
- lang: eng
text: Semiconductor quantum dots (QDs) in planar germanium (Ge) heterostructures
have emerged as front-runners for future hole-based quantum processors. Here,
we present strong coupling between a hole charge qubit, defined in a double quantum
dot (DQD) in planar Ge, and microwave photons in a high-impedance (Zr = 1.3 kΩ)
resonator based on an array of superconducting quantum interference devices (SQUIDs).
Our investigation reveals vacuum-Rabi splittings with coupling strengths up to
g0/2π = 260 MHz, and a cooperativity of C ~ 100, dependent on DQD tuning. Furthermore,
utilizing the frequency tunability of our resonator, we explore the quenched energy
splitting associated with strong Coulomb correlation effects in Ge QDs. The observed
enhanced coherence of the strongly correlated excited state signals the presence
of distinct symmetries within related spin functions, serving as a precursor to
the strong coupling between photons and spin-charge hybrid qubits in planar Ge.
This work paves the way towards coherent quantum connections between remote hole
qubits in planar Ge, required to scale up hole-based quantum processors.
acknowledgement: The authors thank Simone Frasca, Vincent Jouanny, Guillaume Beaulieu,
Camille Roy, Dominic Dahinden, Davide Lombardo, Daniel Chrastina, and Siddhart Gautam
for contributing to some cleanroom fabrication steps, the measurement setup, device
simulations, data analysis, and for the useful discussions. P.S. acknowledges support
from the Swiss National Science Foundation (SNSF) through the grants Ref. No. 200021
200418 and Ref. No. 206021_205335, and from the Swiss State Secretariat for Education,
Research and Innovation (SERI) under contract number 01042765 SEFRI MB22.00081.
W.J. acknowledges support from the EPFL QSE Postdoctoral Fellowship Grant. S.B.,
D.L., and P.S. acknowledge support from the NCCR Spin Qubit in Silicon (NCCR-SPIN)
Grant No. 51NF40-180604. M.J., G.K., G.I., and S.C. acknowledge support from the
Horizon Europe Project IGNITE ID 101070193. G.K. acknowledges support from the FWF
via the P32235 and I05060 projects.
article_number: '10177'
article_processing_charge: Yes
article_type: original
author:
- first_name: Franco
full_name: De Palma, Franco
last_name: De Palma
- first_name: Fabian
full_name: Oppliger, Fabian
last_name: Oppliger
- first_name: Wonjin
full_name: Jang, Wonjin
last_name: Jang
- first_name: Stefano
full_name: Bosco, Stefano
last_name: Bosco
- first_name: Marian
full_name: Janik, Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
orcid: 0009-0003-9037-8831
- first_name: Stefano
full_name: Calcaterra, Stefano
last_name: Calcaterra
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Daniel
full_name: Loss, Daniel
last_name: Loss
- first_name: Pasquale
full_name: Scarlino, Pasquale
last_name: Scarlino
citation:
ama: De Palma F, Oppliger F, Jang W, et al. Strong hole-photon coupling in planar
Ge for probing charge degree and strongly correlated states. Nature Communications.
2024;15. doi:10.1038/s41467-024-54520-7
apa: De Palma, F., Oppliger, F., Jang, W., Bosco, S., Janik, M., Calcaterra, S.,
… Scarlino, P. (2024). Strong hole-photon coupling in planar Ge for probing charge
degree and strongly correlated states. Nature Communications. Springer
Nature. https://doi.org/10.1038/s41467-024-54520-7
chicago: De Palma, Franco, Fabian Oppliger, Wonjin Jang, Stefano Bosco, Marian Janik,
Stefano Calcaterra, Georgios Katsaros, Giovanni Isella, Daniel Loss, and Pasquale
Scarlino. “Strong Hole-Photon Coupling in Planar Ge for Probing Charge Degree
and Strongly Correlated States.” Nature Communications. Springer Nature,
2024. https://doi.org/10.1038/s41467-024-54520-7.
ieee: F. De Palma et al., “Strong hole-photon coupling in planar Ge for probing
charge degree and strongly correlated states,” Nature Communications, vol.
15. Springer Nature, 2024.
ista: De Palma F, Oppliger F, Jang W, Bosco S, Janik M, Calcaterra S, Katsaros G,
Isella G, Loss D, Scarlino P. 2024. Strong hole-photon coupling in planar Ge for
probing charge degree and strongly correlated states. Nature Communications. 15,
10177.
mla: De Palma, Franco, et al. “Strong Hole-Photon Coupling in Planar Ge for Probing
Charge Degree and Strongly Correlated States.” Nature Communications, vol.
15, 10177, Springer Nature, 2024, doi:10.1038/s41467-024-54520-7.
short: F. De Palma, F. Oppliger, W. Jang, S. Bosco, M. Janik, S. Calcaterra, G.
Katsaros, G. Isella, D. Loss, P. Scarlino, Nature Communications 15 (2024).
date_created: 2024-12-01T23:01:53Z
date_published: 2024-12-01T00:00:00Z
date_updated: 2025-09-08T14:46:06Z
day: '01'
ddc:
- '530'
department:
- _id: GeKa
doi: 10.1038/s41467-024-54520-7
external_id:
isi:
- '001362684200001'
pmid:
- '39580488'
file:
- access_level: open_access
checksum: ef9f99a84089c388904cc8aa8d89c55a
content_type: application/pdf
creator: dernst
date_created: 2024-12-03T11:00:15Z
date_updated: 2024-12-03T11:00:15Z
file_id: '18611'
file_name: 2024_NatureComm_dePalma.pdf
file_size: 5288092
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file_date_updated: 2024-12-03T11:00:15Z
has_accepted_license: '1'
intvolume: ' 15'
isi: 1
language:
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month: '12'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E
call_identifier: FWF
grant_number: P32235
name: Towards scalable hut wire quantum devices
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Strong hole-photon coupling in planar Ge for probing charge degree and strongly
correlated states
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: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 15
year: '2024'
...
---
OA_place: publisher
OA_type: hybrid
_id: '18653'
abstract:
- lang: eng
text: Charge sensing is a sensitive technique for probing quantum devices, of particular
importance for spin-qubit readout. To achieve good readout sensitivities, the
proximity of the charge sensor to the device to be measured is a necessity. However,
this proximity also means that the operation of the device affects, in turn, the
sensor tuning and ultimately the readout sensitivity. We present an approach for
compensating for this crosstalk effect allowing for the gate voltages of the measured
device to be swept in a 1-V × 1-V window while maintaining a sensor configuration
chosen by a Bayesian optimizer. Our algorithm will hopefully be a major contribution
to the suite of fully automated solutions required for the operation of large
quantum device architectures.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: We thank Nicholas Sim for providing help with the experiment and
Sebastian Orbell for helpful discussions. This work was supported by the Royal Society,
the Engineering and Physical Sciences Research Council (EPSRC) National Quantum
Technology Hub in Networked Quantum Information Technology (Grant No. EP/M013243/1),
Quantum Technology Capital (Grant No. EP/N014995/1), the EPSRC Platform Grant (Grant
No. EP/R029229/1), the European Research Council (Grant Agreement No. 948932), the
Scientific Service Units of the Institute of Science and Technology Austria through
resources provided by the nanofabrication facility and, the FWF-I 05060 and HORIZON-RIA
101069515 projects.
article_number: '064026'
article_processing_charge: No
article_type: original
author:
- first_name: Joseph
full_name: Hickie, Joseph
last_name: Hickie
- first_name: Barnaby
full_name: Van Straaten, Barnaby
last_name: Van Straaten
- first_name: Federico
full_name: Fedele, Federico
last_name: Fedele
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Andrea
full_name: Ballabio, Andrea
last_name: Ballabio
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- first_name: Natalia
full_name: Ares, Natalia
last_name: Ares
citation:
ama: Hickie J, Van Straaten B, Fedele F, et al. Automated long-range compensation
of an rf quantum dot sensor. Physical Review Applied. 2024;22(6). doi:10.1103/PhysRevApplied.22.064026
apa: Hickie, J., Van Straaten, B., Fedele, F., Jirovec, D., Ballabio, A., Chrastina,
D., … Ares, N. (2024). Automated long-range compensation of an rf quantum dot
sensor. Physical Review Applied. American Physical Society. https://doi.org/10.1103/PhysRevApplied.22.064026
chicago: Hickie, Joseph, Barnaby Van Straaten, Federico Fedele, Daniel Jirovec,
Andrea Ballabio, Daniel Chrastina, Giovanni Isella, Georgios Katsaros, and Natalia
Ares. “Automated Long-Range Compensation of an Rf Quantum Dot Sensor.” Physical
Review Applied. American Physical Society, 2024. https://doi.org/10.1103/PhysRevApplied.22.064026.
ieee: J. Hickie et al., “Automated long-range compensation of an rf quantum
dot sensor,” Physical Review Applied, vol. 22, no. 6. American Physical
Society, 2024.
ista: Hickie J, Van Straaten B, Fedele F, Jirovec D, Ballabio A, Chrastina D, Isella
G, Katsaros G, Ares N. 2024. Automated long-range compensation of an rf quantum
dot sensor. Physical Review Applied. 22(6), 064026.
mla: Hickie, Joseph, et al. “Automated Long-Range Compensation of an Rf Quantum
Dot Sensor.” Physical Review Applied, vol. 22, no. 6, 064026, American
Physical Society, 2024, doi:10.1103/PhysRevApplied.22.064026.
short: J. Hickie, B. Van Straaten, F. Fedele, D. Jirovec, A. Ballabio, D. Chrastina,
G. Isella, G. Katsaros, N. Ares, Physical Review Applied 22 (2024).
date_created: 2024-12-15T23:01:50Z
date_published: 2024-12-01T00:00:00Z
date_updated: 2025-09-09T11:47:52Z
day: '01'
ddc:
- '530'
department:
- _id: GeKa
doi: 10.1103/PhysRevApplied.22.064026
external_id:
isi:
- '001379155900003'
file:
- access_level: open_access
checksum: bc29a40819abc4969867b6cd6563f7ad
content_type: application/pdf
creator: dernst
date_created: 2024-12-16T11:13:48Z
date_updated: 2024-12-16T11:13:48Z
file_id: '18662'
file_name: 2024_PhysicalReviewApplied_Hickie.pdf
file_size: 3560132
relation: main_file
success: 1
file_date_updated: 2024-12-16T11:13:48Z
has_accepted_license: '1'
intvolume: ' 22'
isi: 1
issue: '6'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452
grant_number: '101069515'
name: Integrated Germanium Quantum Technology
publication: Physical Review Applied
publication_identifier:
eissn:
- 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Automated long-range compensation of an rf quantum dot sensor
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: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 22
year: '2024'
...
---
_id: '17389'
abstract:
- lang: eng
text: The potential of Si and SiGe-based devices for the scaling of quantum circuits
is tainted by device variability. Each device needs to be tuned to operation conditions
and each device realisation requires a different tuning protocol. We demonstrate
that it is possible to automate the tuning of a 4-gate Si FinFET, a 5-gate GeSi
nanowire and a 7-gate Ge/SiGe heterostructure double quantum dot device from scratch
with the same algorithm. We achieve tuning times of 30, 10, and 92 min, respectively.
The algorithm also provides insight into the parameter space landscape for each
of these devices, allowing for the characterization of the regions where double
quantum dot regimes are found. These results show that overarching solutions for
the tuning of quantum devices are enabled by machine learning.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: We acknowledge Ang Li, Erik P. A. M. Bakkers (University of Eindhoven)
for the fabrication of the Ge/Si nanowire. This work was supported by the Royal
Society, the EPSRC National Quantum Technology Hub in Networked Quantum Information
Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1), EPSRC Platform
Grant (EP/R029229/1), the European Research Council (Grant agreement 948932), the
Swiss Nanoscience Institute, the NCCR SPIN, the EU H2020 European Microkelvin Platform
EMP grant No. 824109, the Scientific Service Units of IST Austria through resources
provided by the nanofabrication facility, the FWF-I 05060 and the FWF-P 30207 project.
article_number: '17281'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: B.
full_name: Severin, B.
last_name: Severin
- first_name: D. T.
full_name: Lennon, D. T.
last_name: Lennon
- first_name: L. C.
full_name: Camenzind, L. C.
last_name: Camenzind
- first_name: F.
full_name: Vigneau, F.
last_name: Vigneau
- first_name: F.
full_name: Fedele, F.
last_name: Fedele
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: A.
full_name: Ballabio, A.
last_name: Ballabio
- first_name: D.
full_name: Chrastina, D.
last_name: Chrastina
- first_name: G.
full_name: Isella, G.
last_name: Isella
- first_name: M.
full_name: de Kruijf, M.
last_name: de Kruijf
- first_name: M. J.
full_name: Carballido, M. J.
last_name: Carballido
- first_name: S.
full_name: Svab, S.
last_name: Svab
- first_name: A. V.
full_name: Kuhlmann, A. V.
last_name: Kuhlmann
- first_name: S.
full_name: Geyer, S.
last_name: Geyer
- first_name: F. N. M.
full_name: Froning, F. N. M.
last_name: Froning
- first_name: H.
full_name: Moon, H.
last_name: Moon
- first_name: M. A.
full_name: Osborne, M. A.
last_name: Osborne
- first_name: D.
full_name: Sejdinovic, D.
last_name: Sejdinovic
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
- first_name: D. M.
full_name: Zumbühl, D. M.
last_name: Zumbühl
- first_name: G. A. D.
full_name: Briggs, G. A. D.
last_name: Briggs
- first_name: N.
full_name: Ares, N.
last_name: Ares
citation:
ama: Severin B, Lennon DT, Camenzind LC, et al. Cross-architecture tuning of silicon
and SiGe-based quantum devices using machine learning. Scientific Reports.
2024;14. doi:10.1038/s41598-024-67787-z
apa: Severin, B., Lennon, D. T., Camenzind, L. C., Vigneau, F., Fedele, F., Jirovec,
D., … Ares, N. (2024). Cross-architecture tuning of silicon and SiGe-based quantum
devices using machine learning. Scientific Reports. Springer Nature. https://doi.org/10.1038/s41598-024-67787-z
chicago: Severin, B., D. T. Lennon, L. C. Camenzind, F. Vigneau, F. Fedele, Daniel
Jirovec, A. Ballabio, et al. “Cross-Architecture Tuning of Silicon and SiGe-Based
Quantum Devices Using Machine Learning.” Scientific Reports. Springer Nature,
2024. https://doi.org/10.1038/s41598-024-67787-z.
ieee: B. Severin et al., “Cross-architecture tuning of silicon and SiGe-based
quantum devices using machine learning,” Scientific Reports, vol. 14. Springer
Nature, 2024.
ista: Severin B, Lennon DT, Camenzind LC, Vigneau F, Fedele F, Jirovec D, Ballabio
A, Chrastina D, Isella G, de Kruijf M, Carballido MJ, Svab S, Kuhlmann AV, Geyer
S, Froning FNM, Moon H, Osborne MA, Sejdinovic D, Katsaros G, Zumbühl DM, Briggs
GAD, Ares N. 2024. Cross-architecture tuning of silicon and SiGe-based quantum
devices using machine learning. Scientific Reports. 14, 17281.
mla: Severin, B., et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum
Devices Using Machine Learning.” Scientific Reports, vol. 14, 17281, Springer
Nature, 2024, doi:10.1038/s41598-024-67787-z.
short: B. Severin, D.T. Lennon, L.C. Camenzind, F. Vigneau, F. Fedele, D. Jirovec,
A. Ballabio, D. Chrastina, G. Isella, M. de Kruijf, M.J. Carballido, S. Svab,
A.V. Kuhlmann, S. Geyer, F.N.M. Froning, H. Moon, M.A. Osborne, D. Sejdinovic,
G. Katsaros, D.M. Zumbühl, G.A.D. Briggs, N. Ares, Scientific Reports 14 (2024).
date_created: 2024-08-05T08:50:51Z
date_published: 2024-07-27T00:00:00Z
date_updated: 2025-09-08T08:49:16Z
day: '27'
ddc:
- '530'
department:
- _id: GeKa
doi: 10.1038/s41598-024-67787-z
external_id:
arxiv:
- '2107.12975'
isi:
- '001281273100062'
pmid:
- '39068242'
file:
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checksum: 0b34b89e5f4f3f7b32ffadf104394594
content_type: application/pdf
creator: dernst
date_created: 2024-08-05T08:52:14Z
date_updated: 2024-08-05T08:52:14Z
file_id: '17390'
file_name: 2024_ScientificReports_Severin.pdf
file_size: 2255741
relation: main_file
success: 1
file_date_updated: 2024-08-05T08:52:14Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: 2641CE5E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P30207
name: Hole spin orbit qubits in Ge quantum wells
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '10066'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Cross-architecture tuning of silicon and SiGe-based quantum devices using machine
learning
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: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 14
year: '2024'
...
---
APC_amount: 6828 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '17202'
abstract:
- lang: eng
text: Gate-tunable transmons (gatemons) employing semiconductor Josephson junctions
have recently emerged as building blocks for hybrid quantum circuits. In this
study, we present a gatemon fabricated in planar Germanium. We induce superconductivity
in a two-dimensional hole gas by evaporating aluminum atop a thin spacer, which
separates the superconductor from the Ge quantum well. The Josephson junction
is then integrated into an Xmon circuit and capacitively coupled to a transmission
line resonator. We showcase the qubit tunability in a broad frequency range with
resonator and two-tone spectroscopy. Time-domain characterizations reveal energy
relaxation and coherence times up to 75 ns. Our results, combined with the recent
advances in the spin qubit field, pave the way towards novel hybrid and protected
qubits in a group IV, CMOS-compatible material.
acknowledged_ssus:
- _id: ScienComp
- _id: M-Shop
- _id: NanoFab
acknowledgement: "We acknowledge Lucas Casparis, Jeroen Danon, Valla Fatemi, Morten
Kjaergard and Javad Shabani for their valuable insights and comments. This research
was supported by the Scientific Service Units of ISTA through resources provided
by the MIBA Machine Shop\r\nand the Nanofabrication facility. This research and
related results were made possible with the support of the NOMIS Foundation and
the FWF Projects with DOI:10.55776/I5060 and DOI:10.55776/P36507. We also acknowledge
the NextGenerationEU PRIN project\r\n2022A8CJP3 (GAMESQUAD) for partial financial
support."
article_number: '6400'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Oliver
full_name: Sagi, Oliver
id: 71616374-A8E9-11E9-A7CA-09ECE5697425
last_name: Sagi
- first_name: Alessandro
full_name: Crippa, Alessandro
id: 1F2B21A2-F6E7-11E9-9B82-F7DBE5697425
last_name: Crippa
orcid: 0000-0002-2968-611X
- first_name: Marco
full_name: Valentini, Marco
id: C0BB2FAC-D767-11E9-B658-BC13E6697425
last_name: Valentini
- first_name: Marian
full_name: Janik, Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
orcid: 0009-0003-9037-8831
- first_name: Levon
full_name: Baghumyan, Levon
id: 7aa1f788-b527-11ee-aa9e-e6111a79e0c7
last_name: Baghumyan
- first_name: Giorgio
full_name: Fabris, Giorgio
id: 298cf6f3-1ff6-11ee-9fa6-d94cfa0b3352
last_name: Fabris
- first_name: Lucky
full_name: Kapoor, Lucky
id: 84b9700b-15b2-11ec-abd3-831089e67615
last_name: Kapoor
orcid: 0000-0001-8319-2148
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- first_name: Stefano
full_name: Calcaterra, Stefano
last_name: Calcaterra
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Sagi O, Crippa A, Valentini M, et al. A gate tunable transmon qubit in planar
Ge. Nature Communications. 2024;15. doi:10.1038/s41467-024-50763-6
apa: Sagi, O., Crippa, A., Valentini, M., Janik, M., Baghumyan, L., Fabris, G.,
… Katsaros, G. (2024). A gate tunable transmon qubit in planar Ge. Nature Communications.
Springer Nature. https://doi.org/10.1038/s41467-024-50763-6
chicago: Sagi, Oliver, Alessandro Crippa, Marco Valentini, Marian Janik, Levon Baghumyan,
Giorgio Fabris, Lucky Kapoor, et al. “A Gate Tunable Transmon Qubit in Planar
Ge.” Nature Communications. Springer Nature, 2024. https://doi.org/10.1038/s41467-024-50763-6.
ieee: O. Sagi et al., “A gate tunable transmon qubit in planar Ge,” Nature
Communications, vol. 15. Springer Nature, 2024.
ista: Sagi O, Crippa A, Valentini M, Janik M, Baghumyan L, Fabris G, Kapoor L, Hassani
F, Fink JM, Calcaterra S, Chrastina D, Isella G, Katsaros G. 2024. A gate tunable
transmon qubit in planar Ge. Nature Communications. 15, 6400.
mla: Sagi, Oliver, et al. “A Gate Tunable Transmon Qubit in Planar Ge.” Nature
Communications, vol. 15, 6400, Springer Nature, 2024, doi:10.1038/s41467-024-50763-6.
short: O. Sagi, A. Crippa, M. Valentini, M. Janik, L. Baghumyan, G. Fabris, L. Kapoor,
F. Hassani, J.M. Fink, S. Calcaterra, D. Chrastina, G. Isella, G. Katsaros, Nature
Communications 15 (2024).
corr_author: '1'
date_created: 2024-07-04T11:40:45Z
date_published: 2024-07-30T00:00:00Z
date_updated: 2026-04-07T13:01:55Z
day: '30'
ddc:
- '530'
department:
- _id: GeKa
- _id: JoFi
- _id: GradSch
doi: 10.1038/s41467-024-50763-6
external_id:
arxiv:
- '2403.16774'
isi:
- '001281271000022'
pmid:
- '39080279'
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checksum: ddf5361dcb6c543e2cea818501c09910
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oa_version: Published Version
pmid: 1
project:
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grant_number: P36507
name: Merging spin and superconducting qubits in planar Ge
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grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
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name: Hybrid Semiconductor - Superconductor Quantum Devices
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call_identifier: FWF
name: FWF Open Access Fund
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publication_identifier:
eissn:
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publication_status: published
publisher: Springer Nature
quality_controlled: '1'
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link:
- relation: erratum
url: https://doi.org/10.1038/s41467-024-53910-1
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relation: dissertation_contains
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scopus_import: '1'
status: public
title: A gate tunable transmon qubit in planar Ge
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: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 15
year: '2024'
...
---
OA_place: publisher
_id: '18076'
abstract:
- lang: eng
text: "The new era of Ge has opened up new possibilities in quantum computing. The
maturity of Ge\r\nspin qubits is unquestioned, while hybrid semiconductor-superconductor
Ge circuits are on track\r\nto enter the game. Gate-tunable transmons (gatemons)
employing semiconductor Josephson\r\njunctions have recently emerged as building
blocks for such hybrid quantum circuits. In this\r\nthesis, we present a gatemon
fabricated in planar Germanium. We induce superconductivity\r\nin a two-dimensional
hole gas by evaporating aluminum atop a thin spacer, which separates\r\nthe superconductor
from the Ge quantum well. The Josephson junction is then integrated\r\ninto an
Xmon circuit and capacitively coupled to a transmission line resonator. We showcase\r\nthe
qubit tunability in a broad frequency range with resonator and two-tone spectroscopy.\r\nTime-domain
characterizations reveal energy relaxation and coherence times up to 75 ns. Our\r\nresults,
combined with the recent advances in the spin qubit field, pave the way towards
novel\r\nhybrid and protected qubits in a group IV, CMOS-compatible material."
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Oliver
full_name: Sagi, Oliver
id: 71616374-A8E9-11E9-A7CA-09ECE5697425
last_name: Sagi
citation:
ama: Sagi O. Hybrid circuits on planar Germanium. 2024. doi:10.15479/at:ista:18076
apa: Sagi, O. (2024). Hybrid circuits on planar Germanium. Institute of Science
and Technology Austria. https://doi.org/10.15479/at:ista:18076
chicago: Sagi, Oliver. “Hybrid Circuits on Planar Germanium.” Institute of Science
and Technology Austria, 2024. https://doi.org/10.15479/at:ista:18076.
ieee: O. Sagi, “Hybrid circuits on planar Germanium,” Institute of Science and Technology
Austria, 2024.
ista: Sagi O. 2024. Hybrid circuits on planar Germanium. Institute of Science and
Technology Austria.
mla: Sagi, Oliver. Hybrid Circuits on Planar Germanium. Institute of Science
and Technology Austria, 2024, doi:10.15479/at:ista:18076.
short: O. Sagi, Hybrid Circuits on Planar Germanium, Institute of Science and Technology
Austria, 2024.
corr_author: '1'
date_created: 2024-09-16T12:58:36Z
date_published: 2024-09-18T00:00:00Z
date_updated: 2026-04-16T12:20:39Z
day: '18'
ddc:
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: GeKa
doi: 10.15479/at:ista:18076
ec_funded: 1
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month: '09'
oa: 1
oa_version: Published Version
page: '111'
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grant_number: P36507
name: Merging spin and superconducting qubits in planar Ge
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grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
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name: Hybrid Semiconductor - Superconductor Quantum Devices
- _id: 237E5020-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '862046'
name: TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
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relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
title: Hybrid circuits on planar Germanium
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: ba8df636-2132-11f1-aed0-ed93e2281fdd
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...
---
_id: '17196'
abstract:
- lang: eng
text: This .zip File contains the data for the figures presented in the main text
and supplementary material of "A gate tunable transmon qubit in planar Ge" by
O.Sagi et al. The measurements were done using Qcodes. The description of the
files and the instructions on opening the data can be found in the Readme. An
additional Jupyter Notebook is attached that walks through the data analysis.
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
acknowledgement: 'This research was supported by the Scientific Service Units of ISTA
through resources provided by the MIBA Machine Shop and the Nanofabrication facility. '
article_processing_charge: No
author:
- first_name: Oliver
full_name: Sagi, Oliver
id: 71616374-A8E9-11E9-A7CA-09ECE5697425
last_name: Sagi
citation:
ama: Sagi O. A gate-tunable transmon in planar Ge. 2024. doi:10.15479/AT:ISTA:17196
apa: Sagi, O. (2024). A gate-tunable transmon in planar Ge. Institute of Science
and Technology Austria. https://doi.org/10.15479/AT:ISTA:17196
chicago: Sagi, Oliver. “A Gate-Tunable Transmon in Planar Ge.” Institute of Science
and Technology Austria, 2024. https://doi.org/10.15479/AT:ISTA:17196.
ieee: O. Sagi, “A gate-tunable transmon in planar Ge.” Institute of Science and
Technology Austria, 2024.
ista: Sagi O. 2024. A gate-tunable transmon in planar Ge, Institute of Science and
Technology Austria, 10.15479/AT:ISTA:17196.
mla: Sagi, Oliver. A Gate-Tunable Transmon in Planar Ge. Institute of Science
and Technology Austria, 2024, doi:10.15479/AT:ISTA:17196.
short: O. Sagi, (2024).
contributor:
- contributor_type: project_member
first_name: Alessandro
id: 1F2B21A2-F6E7-11E9-9B82-F7DBE5697425
last_name: Crippa
orcid: 0000-0002-2968-611X
- contributor_type: project_member
first_name: Marco
id: C0BB2FAC-D767-11E9-B658-BC13E6697425
last_name: Valentini
- contributor_type: project_member
first_name: Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
- contributor_type: project_member
first_name: Levon
id: 7aa1f788-b527-11ee-aa9e-e6111a79e0c7
last_name: Baghumyan
- contributor_type: project_member
first_name: Giorgio
id: 298cf6f3-1ff6-11ee-9fa6-d94cfa0b3352
last_name: Fabris
- contributor_type: project_member
first_name: Lucky
id: 84b9700b-15b2-11ec-abd3-831089e67615
last_name: Kapoor
- contributor_type: project_member
first_name: Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- contributor_type: project_member
first_name: Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- contributor_type: project_member
first_name: Stefano
last_name: Calcaterra
- contributor_type: project_member
first_name: Daniel
last_name: Chrastina
- contributor_type: project_member
first_name: Giovanni
last_name: Isella
- contributor_type: supervisor
first_name: Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
corr_author: '1'
date_created: 2024-07-04T10:14:34Z
date_published: 2024-07-04T00:00:00Z
date_updated: 2026-04-16T12:20:39Z
day: '04'
ddc:
- '530'
department:
- _id: GradSch
- _id: GeKa
- _id: JoFi
doi: 10.15479/AT:ISTA:17196
file:
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creator: osagi
date_created: 2024-07-04T10:01:51Z
date_updated: 2024-07-04T10:01:51Z
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date_created: 2024-07-04T10:01:50Z
date_updated: 2024-07-04T10:01:50Z
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file_name: OlSa_Readme.pptx
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oa: 1
oa_version: Published Version
project:
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: 262116AA-B435-11E9-9278-68D0E5697425
name: Hybrid Semiconductor - Superconductor Quantum Devices
- _id: bd8bd29e-d553-11ed-ba76-f0070d4b237a
grant_number: P36507
name: Merging spin and superconducting qubits in planar Ge
publisher: Institute of Science and Technology Austria
related_material:
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relation: used_in_publication
status: public
status: public
title: A gate-tunable transmon in planar Ge
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: research_data
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
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...
---
OA_place: publisher
_id: '18129'
abstract:
- lang: eng
text: "State-of-the-art quantum computers, with roughly a thousand qubits, face
a crucial technological challenge of scaling up. Spins confined in quantum dots
(QDs) are a promising candidate\r\nfor qubits due to their long coherence, tunability,
control, and readout. However, their natural\r\ncoupling is the short-ranged (∼
100 nm) exchange interaction, limited to nearest neighbours.\r\nLong-ranged (∼
1 mm) qubit interactions mediated by a photon could be engineered through a\r\ncoherent
spin-photon coupling. Achieving a strong coupling to a photon is inherently challenging
in QDs due to the small dipole moment of the confined charge. However, the potential
of\r\nhigh-impedance resonators to compensate for this has gained significant
attention in the past\r\ndecade. Nevertheless, previous QD circuit quantum electrodynamics
implementations have not\r\nexceeded the impedance of ∼ 3.8 kΩ, leaving opportunities
for significant improvement. The\r\nlarge kinetic inductance of granular aluminium
(grAl) could provide an order-of-magnitude\r\nenhancement. However, fully exploiting
the potential of disordered or granular superconductors\r\nis challenging as their
impedances close to the superconductor-to-insulator transition are\r\ndifficult
to control reproducibly. We report on the realization of a wireless ohmmeter which\r\nallows
in situ resistance measurements during film deposition and, therefore, indirect
control\r\nof the kinetic inductance of grAl films. This allows us to reproducibly
fabricate resonators\r\nwith characteristic impedance exceeding the resistance
quantum, even reaching 22.3 kW, due\r\nto the large sheet kinetic inductance of
up to 3 nH □−1\r\n. By integrating an 8 kW resonator\r\nwith a germanium double
QD, we demonstrate a strong charge-photon coupling with the\r\nhighest rate reported,
566 MHz. The demonstrated method and grAl properties make these\r\nresonators
suitable for boosting the spin-photon coupling strength, a crucial requirement
for\r\nfast, high-fidelity, long-distance two-qubit gates.\r\n"
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Marian
full_name: Janik, Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
orcid: 0009-0003-9037-8831
citation:
ama: Janik M. Strong charge-photon coupling in Germanium enabled by granular aluminium
superinductors. 2024. doi:10.15479/at:ista:18129
apa: Janik, M. (2024). Strong charge-photon coupling in Germanium enabled by
granular aluminium superinductors. Institute of Science and Technology Austria.
https://doi.org/10.15479/at:ista:18129
chicago: Janik, Marian. “Strong Charge-Photon Coupling in Germanium Enabled by Granular
Aluminium Superinductors.” Institute of Science and Technology Austria, 2024.
https://doi.org/10.15479/at:ista:18129.
ieee: M. Janik, “Strong charge-photon coupling in Germanium enabled by granular
aluminium superinductors,” Institute of Science and Technology Austria, 2024.
ista: Janik M. 2024. Strong charge-photon coupling in Germanium enabled by granular
aluminium superinductors. Institute of Science and Technology Austria.
mla: Janik, Marian. Strong Charge-Photon Coupling in Germanium Enabled by Granular
Aluminium Superinductors. Institute of Science and Technology Austria, 2024,
doi:10.15479/at:ista:18129.
short: M. Janik, Strong Charge-Photon Coupling in Germanium Enabled by Granular
Aluminium Superinductors, Institute of Science and Technology Austria, 2024.
corr_author: '1'
date_created: 2024-09-23T17:25:43Z
date_published: 2024-09-24T00:00:00Z
date_updated: 2026-06-03T07:16:03Z
day: '24'
ddc:
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: GeKa
doi: 10.15479/at:ista:18129
file:
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language:
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month: '09'
oa: 1
oa_version: Published Version
page: '164'
project:
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grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
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grant_number: P36507
name: Merging spin and superconducting qubits in planar Ge
- _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E
call_identifier: FWF
grant_number: P32235
name: Towards scalable hut wire quantum devices
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grant_number: '101069515'
name: Integrated Germanium Quantum Technology
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name: Protected states of quantum matter
publication_identifier:
issn:
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publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
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relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
title: Strong charge-photon coupling in Germanium enabled by granular aluminium superinductors
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: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2024'
...
---
OA_place: repository
_id: '18144'
abstract:
- lang: eng
text: "High kinetic inductance superconductors are gaining increasing interest for\r\nthe
realisation of qubits, amplifiers and detectors. Moreover, thanks to their\r\nhigh
impedance, quantum buses made of such materials enable large zero-point\r\nfluctuations
of the voltage, boosting the coupling rates to spin and charge\r\nqubits. However,
fully exploiting the potential of disordered or granular\r\nsuperconductors is
challenging, as their inductance and, therefore, impedance\r\nat high values are
difficult to control. Here we have integrated a granular\r\naluminium resonator,
having a characteristic impedance exceeding the resistance\r\nquantum, with a
germanium double quantum dot and demonstrate strong\r\ncharge-photon coupling
with a rate of $g_\\text{c}/2\\pi= (566 \\pm 2)$ MHz. This\r\nwas achieved due
to the realisation of a wireless ohmmeter, which allows\r\n\\emph{in situ} measurements
during film deposition and, therefore, control of\r\nthe kinetic inductance of
granular aluminium films. Reproducible fabrication of\r\ncircuits with impedances
(inductances) exceeding 13 k$\\Omega$ (1 nH per square)\r\nis now possible. This
broadly applicable method opens the path for novel qubits\r\nand high-fidelity,
long-distance two-qubit gates."
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: "We acknowledge Franco De Palma, Mahya Khorramshahi, Fabian Oppliger,
Thomas Reisinger, Pasquale Scarlino and Xiao Xue for helpful discussions. This research
was supported by the Scientific Service Units of ISTA through resources provided
by the MIBA Machine Shop and the Nanofabrication facility. This research and related
results were made possible with the support of the NOMIS Foundation, the HORIZON-RIA
101069515 project, the FWF Projects with DOI:10.55776/P32235, DOI:10.55776/I5060
and DOI:10.55776/P36507. IMP acknowledges funding from the Deutsche Forschungsgemeinschaft
(DFG – German Research Foundation) under project number 450396347 (GeHoldeQED).
ICN2 acknowledges funding from Generalitat de Catalunya 2021SGR00457. We acknowledge
support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies
(PTI-QTEP+). This research work has been funded by the European Commission – NextGenerationEU
(Regulation EU 2020/2094), through CSIC’s\r\nQuantum Technologies Platform (QTEP).
ICN2 is supported by the Severo Ochoa program from Spanish MCIN/AEI (Grant No.:
CEX2021-001214-S) and is funded by the CERCA Programme/Generalitat de Catalunya.
Part of the present work has been performed in the framework of Universitat Autònoma
de Barcelona Materials Science PhD program. AGM has received funding from Grant
RYC2021-033479-I funded by MCIN/AEI/10.13039/501100011033 and by European Union
NextGenerationEU/PRTR. M.B. acknowledges support from SUR Generalitat de Catalunya
and the EU Social Fund; project ref. 2020 FI 00103. The authors\r\nacknowledge the
use of instrumentation and the technical advice provided by the Joint Electron Microscopy
Center at ALBA (JEMCA). ICN2 acknowledges funding from Grant IU16-014206 (METCAM-FIB)
funded by the European Union through the European Regional Development\r\nFund (ERDF),
with the support of the Ministry of Research and Universities, Generalitat de Catalunya.
ICN2 is a founding member of e-DREAM [60]."
article_number: '2407.03079'
article_processing_charge: No
arxiv: 1
author:
- first_name: Marian
full_name: Janik, Marian
id: 396A1950-F248-11E8-B48F-1D18A9856A87
last_name: Janik
orcid: 0009-0003-9037-8831
- first_name: Kevin Etienne Robert
full_name: Roux, Kevin Etienne Robert
id: 53f93ea2-803f-11ed-ab7e-b283135794ef
last_name: Roux
- first_name: Carla N
full_name: Borja Espinosa, Carla N
id: 18777c01-896a-11ed-bdf8-e4851dc07d16
last_name: Borja Espinosa
- first_name: Oliver
full_name: Sagi, Oliver
id: 71616374-A8E9-11E9-A7CA-09ECE5697425
last_name: Sagi
- first_name: Abdulhamid
full_name: Baghdadi, Abdulhamid
id: 160D87FA-96B5-11E9-BF77-7626E6697425
last_name: Baghdadi
- first_name: Thomas
full_name: Adletzberger, Thomas
id: 38756BB2-F248-11E8-B48F-1D18A9856A87
last_name: Adletzberger
- first_name: Stefano
full_name: Calcaterra, Stefano
last_name: Calcaterra
- first_name: Marc
full_name: Botifoll, Marc
last_name: Botifoll
- first_name: Alba Garzón
full_name: Manjón, Alba Garzón
last_name: Manjón
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: Ioan M.
full_name: Pop, Ioan M.
last_name: Pop
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Janik M, Roux KER, Borja Espinosa CN, et al. Strong charge-photon coupling
in planar germanium enabled by granular aluminium superinductors. arXiv.
doi:10.48550/arXiv.2407.03079
apa: Janik, M., Roux, K. E. R., Borja Espinosa, C. N., Sagi, O., Baghdadi, A., Adletzberger,
T., … Katsaros, G. (n.d.). Strong charge-photon coupling in planar germanium enabled
by granular aluminium superinductors. arXiv. https://doi.org/10.48550/arXiv.2407.03079
chicago: Janik, Marian, Kevin Etienne Robert Roux, Carla N Borja Espinosa, Oliver
Sagi, Abdulhamid Baghdadi, Thomas Adletzberger, Stefano Calcaterra, et al. “Strong
Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors.”
ArXiv, n.d. https://doi.org/10.48550/arXiv.2407.03079.
ieee: M. Janik et al., “Strong charge-photon coupling in planar germanium
enabled by granular aluminium superinductors,” arXiv. .
ista: Janik M, Roux KER, Borja Espinosa CN, Sagi O, Baghdadi A, Adletzberger T,
Calcaterra S, Botifoll M, Manjón AG, Arbiol J, Chrastina D, Isella G, Pop IM,
Katsaros G. Strong charge-photon coupling in planar germanium enabled by granular
aluminium superinductors. arXiv, 2407.03079.
mla: Janik, Marian, et al. “Strong Charge-Photon Coupling in Planar Germanium Enabled
by Granular Aluminium Superinductors.” ArXiv, 2407.03079, doi:10.48550/arXiv.2407.03079.
short: M. Janik, K.E.R. Roux, C.N. Borja Espinosa, O. Sagi, A. Baghdadi, T. Adletzberger,
S. Calcaterra, M. Botifoll, A.G. Manjón, J. Arbiol, D. Chrastina, G. Isella, I.M.
Pop, G. Katsaros, ArXiv (n.d.).
corr_author: '1'
date_created: 2024-09-26T09:50:43Z
date_published: 2024-07-03T00:00:00Z
date_updated: 2026-06-07T22:31:13Z
day: '03'
department:
- _id: GeKa
- _id: GradSch
- _id: JoFi
doi: 10.48550/arXiv.2407.03079
external_id:
arxiv:
- '2407.03079'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2407.03079
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452
grant_number: '101069515'
name: Integrated Germanium Quantum Technology
- _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E
call_identifier: FWF
grant_number: P32235
name: Towards scalable hut wire quantum devices
- _id: bd8bd29e-d553-11ed-ba76-f0070d4b237a
grant_number: P36507
name: Merging spin and superconducting qubits in planar Ge
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
publication: arXiv
publication_status: draft
related_material:
record:
- id: '18886'
relation: research_data
status: public
- id: '19401'
relation: later_version
status: public
- id: '18129'
relation: dissertation_contains
status: public
status: public
title: Strong charge-photon coupling in planar germanium enabled by granular aluminium
superinductors
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: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...
---
_id: '10920'
abstract:
- lang: eng
text: The spin-orbit interaction permits to control the state of a spin qubit via
electric fields. For holes it is particularly strong, allowing for fast all electrical
qubit manipulation, and yet an in-depth understanding of this interaction in hole
systems is missing. Here we investigate, experimentally and theoretically, the
effect of the cubic Rashba spin-orbit interaction on the mixing of the spin states
by studying singlet-triplet oscillations in a planar Ge hole double quantum dot.
Landau-Zener sweeps at different magnetic field directions allow us to disentangle
the effects of the spin-orbit induced spin-flip term from those caused by strongly
site-dependent and anisotropic quantum dot g tensors. Our work, therefore, provides
new insights into the hole spin-orbit interaction, necessary for optimizing future
qubit experiments.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: "This research was supported by the Scientific Service Units of ISTA
through resources provided by the MIBA Machine Shop and the nanofabrication facility.
This project has received funding from the European Union’s Horizon 2020 research
and innovation program under the Marie\r\nSkłodowska-Curie Grant Agreement No. 844511,
No. 75441, and by the FWF-P 30207, I05060, and M3032-N projects. A. B. acknowledges
support from the EU Horizon-2020 FET project microSPIRE, ID: 766955. P.M. M. and
G. B. acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG—German Research
Foundation) under Project No. 450396347. This work was supported by the Royal Society
(URF\\R1\\191150) and the European Research Council (Grant Agreement No. 948932),
N. A. acknowledges the use of the University of Oxford Advanced Research Computing
(ARC) facility."
article_number: '126803'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Philipp M.
full_name: Mutter, Philipp M.
last_name: Mutter
- first_name: Andrea C
full_name: Hofmann, Andrea C
id: 340F461A-F248-11E8-B48F-1D18A9856A87
last_name: Hofmann
- first_name: Alessandro
full_name: Crippa, Alessandro
id: 1F2B21A2-F6E7-11E9-9B82-F7DBE5697425
last_name: Crippa
orcid: 0000-0002-2968-611X
- first_name: Marek
full_name: Rychetsky, Marek
last_name: Rychetsky
- first_name: David L.
full_name: Craig, David L.
last_name: Craig
- first_name: Josip
full_name: Kukucka, Josip
id: 3F5D8856-F248-11E8-B48F-1D18A9856A87
last_name: Kukucka
- first_name: Frederico
full_name: Martins, Frederico
id: 38F80F9A-1CB8-11EA-BC76-B49B3DDC885E
last_name: Martins
orcid: 0000-0003-2668-2401
- first_name: Andrea
full_name: Ballabio, Andrea
last_name: Ballabio
- first_name: Natalia
full_name: Ares, Natalia
last_name: Ares
- first_name: Daniel
full_name: Chrastina, Daniel
last_name: Chrastina
- first_name: Giovanni
full_name: Isella, Giovanni
last_name: Isella
- first_name: 'Guido '
full_name: 'Burkard, Guido '
last_name: Burkard
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Jirovec D, Mutter PM, Hofmann AC, et al. Dynamics of hole singlet-triplet qubits
with large g-factor differences. Physical Review Letters. 2022;128(12).
doi:10.1103/PhysRevLett.128.126803
apa: Jirovec, D., Mutter, P. M., Hofmann, A. C., Crippa, A., Rychetsky, M., Craig,
D. L., … Katsaros, G. (2022). Dynamics of hole singlet-triplet qubits with large
g-factor differences. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/PhysRevLett.128.126803
chicago: Jirovec, Daniel, Philipp M. Mutter, Andrea C Hofmann, Alessandro Crippa,
Marek Rychetsky, David L. Craig, Josip Kukucka, et al. “Dynamics of Hole Singlet-Triplet
Qubits with Large g-Factor Differences.” Physical Review Letters. American
Physical Society, 2022. https://doi.org/10.1103/PhysRevLett.128.126803.
ieee: D. Jirovec et al., “Dynamics of hole singlet-triplet qubits with large
g-factor differences,” Physical Review Letters, vol. 128, no. 12. American
Physical Society, 2022.
ista: Jirovec D, Mutter PM, Hofmann AC, Crippa A, Rychetsky M, Craig DL, Kukucka
J, Martins F, Ballabio A, Ares N, Chrastina D, Isella G, Burkard G, Katsaros G.
2022. Dynamics of hole singlet-triplet qubits with large g-factor differences.
Physical Review Letters. 128(12), 126803.
mla: Jirovec, Daniel, et al. “Dynamics of Hole Singlet-Triplet Qubits with Large
g-Factor Differences.” Physical Review Letters, vol. 128, no. 12, 126803,
American Physical Society, 2022, doi:10.1103/PhysRevLett.128.126803.
short: D. Jirovec, P.M. Mutter, A.C. Hofmann, A. Crippa, M. Rychetsky, D.L. Craig,
J. Kukucka, F. Martins, A. Ballabio, N. Ares, D. Chrastina, G. Isella, G. Burkard,
G. Katsaros, Physical Review Letters 128 (2022).
corr_author: '1'
date_created: 2022-03-24T15:51:11Z
date_published: 2022-03-24T00:00:00Z
date_updated: 2025-04-14T07:44:07Z
day: '24'
ddc:
- '530'
department:
- _id: GradSch
- _id: GeKa
doi: 10.1103/PhysRevLett.128.126803
ec_funded: 1
external_id:
arxiv:
- '2111.05130'
isi:
- '000786542500004'
pmid:
- '35394319'
file:
- access_level: open_access
checksum: 6e66ad548d18db9c131f304acbd5a1f4
content_type: application/pdf
creator: dernst
date_created: 2022-03-28T06:53:39Z
date_updated: 2022-03-28T06:53:39Z
file_id: '10928'
file_name: 2022_PhysRevLetters_Jirovec.pdf
file_size: 1266515
relation: main_file
success: 1
file_date_updated: 2022-03-28T06:53:39Z
has_accepted_license: '1'
intvolume: ' 128'
isi: 1
issue: '12'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26A151DA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '844511'
name: Majorana bound states in Ge/SiGe heterostructures
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 2641CE5E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P30207
name: Hole spin orbit qubits in Ge quantum wells
- _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1
grant_number: I05060
name: High impedance circuit quantum electrodynamics with hole spins
- _id: c08c05c4-5a5b-11eb-8a69-dc6ce49d7973
grant_number: M03032
name: Long-range spin exchange for 2D qubits architectures
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '18291'
relation: popular_science
status: public
scopus_import: '1'
status: public
title: Dynamics of hole singlet-triplet qubits with large g-factor differences
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: 128
year: '2022'
...