---
APC_amount: 6228 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '13200'
abstract:
- lang: eng
  text: Recent quantum technologies have established precise quantum control of various
    microscopic systems using electromagnetic waves. Interfaces based on cryogenic
    cavity electro-optic systems are particularly promising, due to the direct interaction
    between microwave and optical fields in the quantum regime. Quantum optical control
    of superconducting microwave circuits has been precluded so far due to the weak
    electro-optical coupling as well as quasi-particles induced by the pump laser.
    Here we report the coherent control of a superconducting microwave cavity using
    laser pulses in a multimode electro-optical device at millikelvin temperature
    with near-unity cooperativity. Both the stationary and instantaneous responses
    of the microwave and optical modes comply with the coherent electro-optical interaction,
    and reveal only minuscule amount of excess back-action with an unanticipated time
    delay. Our demonstration enables wide ranges of applications beyond quantum transductions,
    from squeezing and quantum non-demolition measurements of microwave fields, to
    entanglement generation and hybrid quantum networks.
acknowledgement: This work was supported by the European Research Council under grant
  agreement no. 758053 (ERC StG QUNNECT), the European Union’s Horizon 2020 research
  and innovation program under grant agreement no. 899354 (FETopen SuperQuLAN), and
  the Austrian Science Fund (FWF) through BeyondC (F7105). L.Q. acknowledges generous
  support from the ISTFELLOW programme. W.H. is the recipient of an ISTplus postdoctoral
  fellowship with funding from the European Union’s Horizon 2020 research and innovation
  program under the Marie Skłodowska-Curie grant agreement no. 754411. G.A. is the
  recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.
article_number: '3784'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: William J
  full_name: Hease, William J
  id: 29705398-F248-11E8-B48F-1D18A9856A87
  last_name: Hease
  orcid: 0000-0001-9868-2166
- first_name: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
citation:
  ama: Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. Coherent optical control of a
    superconducting microwave cavity via electro-optical dynamical back-action. <i>Nature
    Communications</i>. 2023;14. doi:<a href="https://doi.org/10.1038/s41467-023-39493-3">10.1038/s41467-023-39493-3</a>
  apa: Qiu, L., Sahu, R., Hease, W. J., Arnold, G. M., &#38; Fink, J. M. (2023). Coherent
    optical control of a superconducting microwave cavity via electro-optical dynamical
    back-action. <i>Nature Communications</i>. Nature Research. <a href="https://doi.org/10.1038/s41467-023-39493-3">https://doi.org/10.1038/s41467-023-39493-3</a>
  chicago: Qiu, Liu, Rishabh Sahu, William J Hease, Georg M Arnold, and Johannes M
    Fink. “Coherent Optical Control of a Superconducting Microwave Cavity via Electro-Optical
    Dynamical Back-Action.” <i>Nature Communications</i>. Nature Research, 2023. <a
    href="https://doi.org/10.1038/s41467-023-39493-3">https://doi.org/10.1038/s41467-023-39493-3</a>.
  ieee: L. Qiu, R. Sahu, W. J. Hease, G. M. Arnold, and J. M. Fink, “Coherent optical
    control of a superconducting microwave cavity via electro-optical dynamical back-action,”
    <i>Nature Communications</i>, vol. 14. Nature Research, 2023.
  ista: Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. 2023. Coherent optical control
    of a superconducting microwave cavity via electro-optical dynamical back-action.
    Nature Communications. 14, 3784.
  mla: Qiu, Liu, et al. “Coherent Optical Control of a Superconducting Microwave Cavity
    via Electro-Optical Dynamical Back-Action.” <i>Nature Communications</i>, vol.
    14, 3784, Nature Research, 2023, doi:<a href="https://doi.org/10.1038/s41467-023-39493-3">10.1038/s41467-023-39493-3</a>.
  short: L. Qiu, R. Sahu, W.J. Hease, G.M. Arnold, J.M. Fink, Nature Communications
    14 (2023).
corr_author: '1'
date_created: 2023-07-09T22:01:11Z
date_published: 2023-06-24T00:00:00Z
date_updated: 2026-06-06T22:31:13Z
day: '24'
ddc:
- '000'
department:
- _id: JoFi
doi: 10.1038/s41467-023-39493-3
ec_funded: 1
external_id:
  arxiv:
  - '2210.12443'
  isi:
  - '001018100800002'
  pmid:
  - '37355691'
file:
- access_level: open_access
  checksum: ec7ccd2c08f90d59cab302fd0d7776a4
  content_type: application/pdf
  creator: alisjak
  date_created: 2023-07-10T10:10:54Z
  date_updated: 2023-07-10T10:10:54Z
  file_id: '13206'
  file_name: 2023_NatureComms_Qiu.pdf
  file_size: 1349134
  relation: main_file
  success: 1
file_date_updated: 2023-07-10T10:10:54Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  grant_number: F07105
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
  name: Coherent on-chip conversion of superconducting qubit signals from microwaves
    to optical frequencies
- _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: Nature Research
quality_controlled: '1'
related_material:
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  - id: '18871'
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    status: public
scopus_import: '1'
status: public
title: Coherent optical control of a superconducting microwave cavity via electro-optical
  dynamical back-action
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: 14
year: '2023'
...
---
OA_place: repository
_id: '18953'
abstract:
- lang: eng
  text: The rapid development of superconducting quantum hardware is expected to run
    into significant I/O restrictions due to the need for large-scale error correction
    in a cryogenic environment. Classical data centers rely on fiber-optic interconnects
    to remove similar networking bottlenecks and to allow for reconfigurable, software-defined
    infrastructures. In the same spirit, ultra-cold electro-optic links have been
    proposed and used to generate qubit control signals, or to replace cryogenic readout
    electronics. So far, the latter suffered from either low efficiency, low bandwidth
    and the need for additional microwave drives, or breaking of Cooper pairs and
    qubit states. In this work we realize electro-optic microwave photonics at millikelvin
    temperatures to implement a radio-over-fiber qubit readout that does not require
    any active or passive cryogenic microwave equipment. We demonstrate all-optical
    single-shot-readout by means of the Jaynes-Cummings nonlinearity in a circulator-free
    readout scheme. Importantly, we do not observe any direct radiation impact on
    the qubit state as verified with high-fidelity quantum-non-demolition measurements
    despite the absence of shielding elements. This compatibility between superconducting
    circuits and telecom wavelength light is not only a prerequisite to establish
    modular quantum networks, it is also relevant for multiplexed readout of superconducting
    photon detectors and classical superconducting logic. Moreover, this experiment
    showcases the potential of electro-optic radiometry in harsh environments - an
    electronics-free sensing principle that extends into the THz regime with applications
    in radio astronomy, planetary missions and earth observation.
acknowledgement: "We thank F. Hassani and M. Zemlicka for assistance\r\nwith qubit
  design and high power readout respectively,\r\nand P. Winkel and I. Pop at KIT for
  providing the JPA.\r\nThis work was supported by the European Research\r\nCouncil
  under grant agreement no. 758053 (ERC StG\r\nQUNNECT) and no. 101089099 (ERC CoG
  cQEO), the\r\nEuropean Union’s Horizon 2020 research and innovation\r\nprogram under
  grant agreement no. 899354 (FETopen\r\nSuperQuLAN) and the Austrian Science Fund
  (FWF)\r\nthrough BeyondC (grant no. F7105). L.Q. acknowledges\r\ngenerous support
  from the ISTFELLOW programme\r\nand G.A. is the recipient of a DOC fellowship of
  the\r\nAustrian Academy of Sciences at IST Austria."
article_processing_charge: No
arxiv: 1
author:
- first_name: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
- first_name: Thomas
  full_name: Werner, Thomas
  id: 1fcd8497-dba3-11ea-a45e-c6fbd715f7c7
  last_name: Werner
  orcid: 0009-0001-2346-5236
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: Lucky
  full_name: Kapoor, Lucky
  id: 84b9700b-15b2-11ec-abd3-831089e67615
  last_name: Kapoor
  orcid: 0000-0001-8319-2148
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
citation:
  ama: Arnold GM, Werner T, Sahu R, Kapoor L, Qiu L, Fink JM. All-optical single-shot
    readout of a superconducting qubit. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/ARXIV.2310.16817">10.48550/ARXIV.2310.16817</a>
  apa: Arnold, G. M., Werner, T., Sahu, R., Kapoor, L., Qiu, L., &#38; Fink, J. M.
    (n.d.). All-optical single-shot readout of a superconducting qubit. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/ARXIV.2310.16817">https://doi.org/10.48550/ARXIV.2310.16817</a>
  chicago: Arnold, Georg M, Thomas Werner, Rishabh Sahu, Lucky Kapoor, Liu Qiu, and
    Johannes M Fink. “All-Optical Single-Shot Readout of a Superconducting Qubit.”
    <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/ARXIV.2310.16817">https://doi.org/10.48550/ARXIV.2310.16817</a>.
  ieee: G. M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, and J. M. Fink, “All-optical
    single-shot readout of a superconducting qubit,” <i>arXiv</i>. .
  ista: Arnold GM, Werner T, Sahu R, Kapoor L, Qiu L, Fink JM. All-optical single-shot
    readout of a superconducting qubit. arXiv, <a href="https://doi.org/10.48550/ARXIV.2310.16817">10.48550/ARXIV.2310.16817</a>.
  mla: Arnold, Georg M., et al. “All-Optical Single-Shot Readout of a Superconducting
    Qubit.” <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/ARXIV.2310.16817">10.48550/ARXIV.2310.16817</a>.
  short: G.M. Arnold, T. Werner, R. Sahu, L. Kapoor, L. Qiu, J.M. Fink, ArXiv (n.d.).
corr_author: '1'
date_created: 2025-01-29T11:11:34Z
date_published: 2023-10-25T00:00:00Z
date_updated: 2026-06-06T22:31:12Z
day: '25'
department:
- _id: JoFi
doi: 10.48550/ARXIV.2310.16817
ec_funded: 1
external_id:
  arxiv:
  - '2310.16817'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2310.16817
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: bdadfa0d-d553-11ed-ba76-fb85edbd456a
  grant_number: '101089099'
  name: 'Cavity Quantum Electro Optics: Microwave photonics with nonclassical states'
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
  name: Coherent on-chip conversion of superconducting qubit signals from microwaves
    to optical frequencies
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  grant_number: F07105
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '19073'
    relation: later_version
    status: public
  - id: '18871'
    relation: dissertation_contains
    status: public
status: public
title: All-optical single-shot readout of a superconducting qubit
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: '2023'
...
---
_id: '12159'
abstract:
- lang: eng
  text: The term “haplotype block” is commonly used in the developing field of haplotype-based
    inference methods. We argue that the term should be defined based on the structure
    of the Ancestral Recombination Graph (ARG), which contains complete information
    on the ancestry of a sample. We use simulated examples to demonstrate key features
    of the relationship between haplotype blocks and ancestral structure, emphasizing
    the stochasticity of the processes that generate them. Even the simplest cases
    of neutrality or of a “hard” selective sweep produce a rich structure, often missed
    by commonly used statistics. We highlight a number of novel methods for inferring
    haplotype structure, based on the full ARG, or on a sequence of trees, and illustrate
    how they can be used to define haplotype blocks using an empirical data set. While
    the advent of new, computationally efficient methods makes it possible to apply
    these concepts broadly, they (and additional new methods) could benefit from adding
    features to explore haplotype blocks, as we define them. Understanding and applying
    the concept of the haplotype block will be essential to fully exploit long and
    linked-read sequencing technologies.
acknowledgement: 'We thank the Barton group for useful discussion and feedback during
  the writing of this article. Comments from Roger Butlin, Molly Schumer''s Group,
  the tskit development team, editors and three reviewers greatly improved the manuscript.
  Funding was provided by SCAS (Natural Sciences Programme, Knut and Alice Wallenberg
  Foundation), an FWF Wittgenstein grant (PT1001Z211), an FWF standalone grant (grant
  P 32166), and an ERC Advanced Grant. YFC was supported by the Max Planck Society
  and an ERC Proof of Concept Grant #101069216 (HAPLOTAGGING).'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Daria
  full_name: Shipilina, Daria
  id: 428A94B0-F248-11E8-B48F-1D18A9856A87
  last_name: Shipilina
  orcid: 0000-0002-1145-9226
- first_name: Arka
  full_name: Pal, Arka
  id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425
  last_name: Pal
  orcid: 0000-0002-4530-8469
- first_name: Sean
  full_name: Stankowski, Sean
  id: 43161670-5719-11EA-8025-FABC3DDC885E
  last_name: Stankowski
- first_name: Yingguang Frank
  full_name: Chan, Yingguang Frank
  last_name: Chan
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: Shipilina D, Pal A, Stankowski S, Chan YF, Barton NH. On the origin and structure
    of haplotype blocks. <i>Molecular Ecology</i>. 2023;32(6):1441-1457. doi:<a href="https://doi.org/10.1111/mec.16793">10.1111/mec.16793</a>
  apa: Shipilina, D., Pal, A., Stankowski, S., Chan, Y. F., &#38; Barton, N. H. (2023).
    On the origin and structure of haplotype blocks. <i>Molecular Ecology</i>. Wiley.
    <a href="https://doi.org/10.1111/mec.16793">https://doi.org/10.1111/mec.16793</a>
  chicago: Shipilina, Daria, Arka Pal, Sean Stankowski, Yingguang Frank Chan, and
    Nicholas H Barton. “On the Origin and Structure of Haplotype Blocks.” <i>Molecular
    Ecology</i>. Wiley, 2023. <a href="https://doi.org/10.1111/mec.16793">https://doi.org/10.1111/mec.16793</a>.
  ieee: D. Shipilina, A. Pal, S. Stankowski, Y. F. Chan, and N. H. Barton, “On the
    origin and structure of haplotype blocks,” <i>Molecular Ecology</i>, vol. 32,
    no. 6. Wiley, pp. 1441–1457, 2023.
  ista: Shipilina D, Pal A, Stankowski S, Chan YF, Barton NH. 2023. On the origin
    and structure of haplotype blocks. Molecular Ecology. 32(6), 1441–1457.
  mla: Shipilina, Daria, et al. “On the Origin and Structure of Haplotype Blocks.”
    <i>Molecular Ecology</i>, vol. 32, no. 6, Wiley, 2023, pp. 1441–57, doi:<a href="https://doi.org/10.1111/mec.16793">10.1111/mec.16793</a>.
  short: D. Shipilina, A. Pal, S. Stankowski, Y.F. Chan, N.H. Barton, Molecular Ecology
    32 (2023) 1441–1457.
corr_author: '1'
date_created: 2023-01-12T12:09:17Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2026-06-06T22:31:13Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1111/mec.16793
external_id:
  isi:
  - '000900762000001'
  pmid:
  - '36433653'
file:
- access_level: open_access
  checksum: b10e0f8fa3dc4d72aaf77a557200978a
  content_type: application/pdf
  creator: dernst
  date_created: 2023-08-16T08:15:41Z
  date_updated: 2023-08-16T08:15:41Z
  file_id: '14062'
  file_name: 2023_MolecularEcology_Shipilina.pdf
  file_size: 7144607
  relation: main_file
  success: 1
file_date_updated: 2023-08-16T08:15:41Z
has_accepted_license: '1'
intvolume: '        32'
isi: 1
issue: '6'
keyword:
- Genetics
- Ecology
- Evolution
- Behavior and Systematics
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 1441-1457
pmid: 1
project:
- _id: 05959E1C-7A3F-11EA-A408-12923DDC885E
  grant_number: P32166
  name: Snapdragon Speciation
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
- _id: bd6958e0-d553-11ed-ba76-86eba6a76c00
  grant_number: '101055327'
  name: Understanding the evolution of continuous genomes
publication: Molecular Ecology
publication_identifier:
  eissn:
  - 1365-294X
  issn:
  - 0962-1083
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
  record:
  - id: '20694'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: On the origin and structure of haplotype blocks
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 32
year: '2023'
...
---
_id: '14032'
abstract:
- lang: eng
  text: Arrays of Josephson junctions are governed by a competition between superconductivity
    and repulsive Coulomb interactions, and are expected to exhibit diverging low-temperature
    resistance when interactions exceed a critical level. Here we report a study of
    the transport and microwave response of Josephson arrays with interactions exceeding
    this level. Contrary to expectations, we observe that the array resistance drops
    dramatically as the temperature is decreased—reminiscent of superconducting behaviour—and
    then saturates at low temperature. Applying a magnetic field, we eventually observe
    a transition to a highly resistive regime. These observations can be understood
    within a theoretical picture that accounts for the effect of thermal fluctuations
    on the insulating phase. On the basis of the agreement between experiment and
    theory, we suggest that apparent superconductivity in our Josephson arrays arises
    from melting the zero-temperature insulator.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: We thank D. Haviland, J. Pekola, C. Ciuti, A. Bubis and A. Shnirman
  for helpful feedback on the paper. This research was supported by the Scientific
  Service Units of IST Austria through resources provided by the MIBA Machine Shop
  and the Nanofabrication Facility. Work supported by the Austrian FWF grant P33692-N
  (S.M., J.S. and A.P.H.), the European Union’s Horizon 2020 Research and Innovation
  programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (J.S.) and
  a NOMIS foundation research grant (J.M.F. and A.P.H.).
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Soham
  full_name: Mukhopadhyay, Soham
  id: FDE60288-A89D-11E9-947F-1AF6E5697425
  last_name: Mukhopadhyay
  orcid: 0000-0001-5263-5559
- first_name: Jorden L
  full_name: Senior, Jorden L
  id: 5479D234-2D30-11EA-89CC-40953DDC885E
  last_name: Senior
  orcid: 0000-0002-0672-9295
- first_name: Jaime
  full_name: Saez Mollejo, Jaime
  id: e0390f72-f6e0-11ea-865d-862393336714
  last_name: Saez Mollejo
- first_name: Denise
  full_name: Puglia, Denise
  id: 4D495994-AE37-11E9-AC72-31CAE5697425
  last_name: Puglia
  orcid: 0000-0003-1144-2763
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
  orcid: 0009-0005-0878-3032
- 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: Andrew P
  full_name: Higginbotham, Andrew P
  id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
  last_name: Higginbotham
  orcid: 0000-0003-2607-2363
citation:
  ama: Mukhopadhyay S, Senior JL, Saez Mollejo J, et al. Superconductivity from a
    melted insulator in Josephson junction arrays. <i>Nature Physics</i>. 2023;19:1630-1635.
    doi:<a href="https://doi.org/10.1038/s41567-023-02161-w">10.1038/s41567-023-02161-w</a>
  apa: Mukhopadhyay, S., Senior, J. L., Saez Mollejo, J., Puglia, D., Zemlicka, M.,
    Fink, J. M., &#38; Higginbotham, A. P. (2023). Superconductivity from a melted
    insulator in Josephson junction arrays. <i>Nature Physics</i>. Springer Nature.
    <a href="https://doi.org/10.1038/s41567-023-02161-w">https://doi.org/10.1038/s41567-023-02161-w</a>
  chicago: Mukhopadhyay, Soham, Jorden L Senior, Jaime Saez Mollejo, Denise Puglia,
    Martin Zemlicka, Johannes M Fink, and Andrew P Higginbotham. “Superconductivity
    from a Melted Insulator in Josephson Junction Arrays.” <i>Nature Physics</i>.
    Springer Nature, 2023. <a href="https://doi.org/10.1038/s41567-023-02161-w">https://doi.org/10.1038/s41567-023-02161-w</a>.
  ieee: S. Mukhopadhyay <i>et al.</i>, “Superconductivity from a melted insulator
    in Josephson junction arrays,” <i>Nature Physics</i>, vol. 19. Springer Nature,
    pp. 1630–1635, 2023.
  ista: Mukhopadhyay S, Senior JL, Saez Mollejo J, Puglia D, Zemlicka M, Fink JM,
    Higginbotham AP. 2023. Superconductivity from a melted insulator in Josephson
    junction arrays. Nature Physics. 19, 1630–1635.
  mla: Mukhopadhyay, Soham, et al. “Superconductivity from a Melted Insulator in Josephson
    Junction Arrays.” <i>Nature Physics</i>, vol. 19, Springer Nature, 2023, pp. 1630–35,
    doi:<a href="https://doi.org/10.1038/s41567-023-02161-w">10.1038/s41567-023-02161-w</a>.
  short: S. Mukhopadhyay, J.L. Senior, J. Saez Mollejo, D. Puglia, M. Zemlicka, J.M.
    Fink, A.P. Higginbotham, Nature Physics 19 (2023) 1630–1635.
corr_author: '1'
date_created: 2023-08-11T07:41:17Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2026-06-06T22:31:15Z
day: '01'
ddc:
- '530'
department:
- _id: GradSch
- _id: AnHi
- _id: JoFi
doi: 10.1038/s41567-023-02161-w
ec_funded: 1
external_id:
  isi:
  - '001054563800006'
file:
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keyword:
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language:
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month: '11'
oa: 1
oa_version: Published Version
page: 1630-1635
project:
- _id: 0aa3608a-070f-11eb-9043-e9cd8a2bd931
  grant_number: P33692
  name: Cavity electromechanics across a quantum phase transition
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  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
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  name: Protected states of quantum matter
publication: Nature Physics
publication_identifier:
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  issn:
  - 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
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title: Superconductivity from a melted insulator in Josephson junction arrays
tmp:
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  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: 19
year: '2023'
...
---
_id: '13117'
abstract:
- lang: eng
  text: The ability to control the direction of scattered light is crucial to provide
    flexibility and scalability for a wide range of on-chip applications, such as
    integrated photonics, quantum information processing, and nonlinear optics. Tunable
    directionality can be achieved by applying external magnetic fields that modify
    optical selection rules, by using nonlinear effects, or interactions with vibrations.
    However, these approaches are less suitable to control microwave photon propagation
    inside integrated superconducting quantum devices. Here, we demonstrate on-demand
    tunable directional scattering based on two periodically modulated transmon qubits
    coupled to a transmission line at a fixed distance. By changing the relative phase
    between the modulation tones, we realize unidirectional forward or backward photon
    scattering. Such an in-situ switchable mirror represents a versatile tool for
    intra- and inter-chip microwave photonic processors. In the future, a lattice
    of qubits can be used to realize topological circuits that exhibit strong nonreciprocity
    or chirality.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: The authors thank W.D. Oliver for discussions, L. Drmic and P. Zielinski
  for software development, and the MIBA workshop and the IST nanofabrication facility
  for technical support. This work was supported by the Austrian Science Fund (FWF)
  through BeyondC (F7105) and IST Austria. E.R. is the recipient of a DOC fellowship
  of the Austrian Academy of Sciences at IST Austria. J.M.F. and M.Z. acknowledge
  support from the European Research Council under grant agreement No 758053 (ERC
  StG QUNNECT) and a NOMIS foundation research grant. The work of A.N.P. and A.V.P.
  has been supported by the Russian Science Foundation under the grant No 20-12-00194.
article_number: '2998'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Alexander V.
  full_name: Poshakinskiy, Alexander V.
  last_name: Poshakinskiy
- first_name: Riya
  full_name: Sett, Riya
  id: 2E6D040E-F248-11E8-B48F-1D18A9856A87
  last_name: Sett
  orcid: 0000-0001-7641-8348
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
  orcid: 0009-0005-0878-3032
- first_name: Alexander N.
  full_name: Poddubny, Alexander N.
  last_name: Poddubny
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
citation:
  ama: Redchenko E, Poshakinskiy AV, Sett R, Zemlicka M, Poddubny AN, Fink JM. Tunable
    directional photon scattering from a pair of superconducting qubits. <i>Nature
    Communications</i>. 2023;14. doi:<a href="https://doi.org/10.1038/s41467-023-38761-6">10.1038/s41467-023-38761-6</a>
  apa: Redchenko, E., Poshakinskiy, A. V., Sett, R., Zemlicka, M., Poddubny, A. N.,
    &#38; Fink, J. M. (2023). Tunable directional photon scattering from a pair of
    superconducting qubits. <i>Nature Communications</i>. Springer Nature. <a href="https://doi.org/10.1038/s41467-023-38761-6">https://doi.org/10.1038/s41467-023-38761-6</a>
  chicago: Redchenko, Elena, Alexander V. Poshakinskiy, Riya Sett, Martin Zemlicka,
    Alexander N. Poddubny, and Johannes M Fink. “Tunable Directional Photon Scattering
    from a Pair of Superconducting Qubits.” <i>Nature Communications</i>. Springer
    Nature, 2023. <a href="https://doi.org/10.1038/s41467-023-38761-6">https://doi.org/10.1038/s41467-023-38761-6</a>.
  ieee: E. Redchenko, A. V. Poshakinskiy, R. Sett, M. Zemlicka, A. N. Poddubny, and
    J. M. Fink, “Tunable directional photon scattering from a pair of superconducting
    qubits,” <i>Nature Communications</i>, vol. 14. Springer Nature, 2023.
  ista: Redchenko E, Poshakinskiy AV, Sett R, Zemlicka M, Poddubny AN, Fink JM. 2023.
    Tunable directional photon scattering from a pair of superconducting qubits. Nature
    Communications. 14, 2998.
  mla: Redchenko, Elena, et al. “Tunable Directional Photon Scattering from a Pair
    of Superconducting Qubits.” <i>Nature Communications</i>, vol. 14, 2998, Springer
    Nature, 2023, doi:<a href="https://doi.org/10.1038/s41467-023-38761-6">10.1038/s41467-023-38761-6</a>.
  short: E. Redchenko, A.V. Poshakinskiy, R. Sett, M. Zemlicka, A.N. Poddubny, J.M.
    Fink, Nature Communications 14 (2023).
corr_author: '1'
date_created: 2023-06-04T22:01:02Z
date_published: 2023-05-24T00:00:00Z
date_updated: 2026-06-06T22:31:16Z
day: '24'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-023-38761-6
ec_funded: 1
external_id:
  arxiv:
  - '2205.03293'
  isi:
  - '001001099700002'
  pmid:
  - '37225689'
file:
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file_date_updated: 2023-06-06T07:31:20Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
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month: '05'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 26B354CA-B435-11E9-9278-68D0E5697425
  name: Controllable Collective States of Superconducting Qubit Ensembles
- _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2
  name: Protected states of quantum matter
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  grant_number: F07105
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication: Nature Communications
publication_identifier:
  eissn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
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title: Tunable directional photon scattering from a pair of superconducting qubits
tmp:
  image: /images/cc_by.png
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  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: 14
year: '2023'
...