---
_id: '14517'
abstract:
- lang: eng
  text: 'State-of-the-art transmon qubits rely on large capacitors, which systematically
    improve their coherence due to reduced surface-loss participation. However, this
    approach increases both the footprint and the parasitic cross-coupling and is
    ultimately limited by radiation losses—a potential roadblock for scaling up quantum
    processors to millions of qubits. In this work we present transmon qubits with
    sizes as low as 36 × 39 µm2 with  100-nm-wide vacuum-gap capacitors that are micromachined
    from commercial silicon-on-insulator wafers and shadow evaporated with aluminum.
    We achieve a vacuum participation ratio up to 99.6% in an in-plane design that
    is compatible with standard coplanar circuits. Qubit relaxationtime measurements
    for small gaps with high zero-point electric field variance of up to 22 V/m reveal
    a double exponential decay indicating comparably strong qubit interaction with
    long-lived two-level systems. The exceptionally high selectivity of up to 20 dB
    to the superconductor-vacuum interface allows us to precisely back out the sub-single-photon
    dielectric loss tangent of aluminum oxide previously exposed to ambient conditions.
    In terms of future scaling potential, we achieve a ratio of qubit quality factor
    to a footprint area equal to 20 µm−2, which is comparable with the highest T1
    devices relying on larger geometries, a value that could improve substantially
    for lower surface-loss superconductors. '
acknowledged_ssus:
- _id: NanoFab
acknowledgement: "This work was supported by the Austrian Science Fund (FWF) through
  BeyondC (F7105), the European Research Council under Grant Agreement No. 758053
  (ERC StG QUNNECT) and a NOMIS foundation research grant. M.Z. was the recipient
  of a SAIA scholarship, E.R. of\r\na DOC fellowship of the Austrian Academy of Sciences,
  and M.P. of a Pöttinger scholarship at IST Austria. S.B. acknowledges support from
  Marie Skłodowska Curie Program No. 707438 (MSC-IF SUPEREOM). J.M.F. acknowledges
  support from the Horizon Europe Program HORIZON-CL4-2022-QUANTUM-01-SGA via Project
  No. 101113946 OpenSuperQPlus100 and the ISTA Nanofabrication Facility."
article_number: '044054'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Shabir
  full_name: Barzanjeh, Shabir
  id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
  last_name: Barzanjeh
  orcid: 0000-0003-0415-1423
- 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: 'Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum-gap transmon qubits:
    Selective and sensitive probes for superconductor surface losses. <i>Physical
    Review Applied</i>. 2023;20(4). doi:<a href="https://doi.org/10.1103/PhysRevApplied.20.044054">10.1103/PhysRevApplied.20.044054</a>'
  apa: 'Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh,
    S., &#38; Fink, J. M. (2023). Compact vacuum-gap transmon qubits: Selective and
    sensitive probes for superconductor surface losses. <i>Physical Review Applied</i>.
    American Physical Society. <a href="https://doi.org/10.1103/PhysRevApplied.20.044054">https://doi.org/10.1103/PhysRevApplied.20.044054</a>'
  chicago: 'Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea
    Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum-Gap Transmon Qubits:
    Selective and Sensitive Probes for Superconductor Surface Losses.” <i>Physical
    Review Applied</i>. American Physical Society, 2023. <a href="https://doi.org/10.1103/PhysRevApplied.20.044054">https://doi.org/10.1103/PhysRevApplied.20.044054</a>.'
  ieee: 'M. Zemlicka <i>et al.</i>, “Compact vacuum-gap transmon qubits: Selective
    and sensitive probes for superconductor surface losses,” <i>Physical Review Applied</i>,
    vol. 20, no. 4. American Physical Society, 2023.'
  ista: 'Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink
    JM. 2023. Compact vacuum-gap transmon qubits: Selective and sensitive probes for
    superconductor surface losses. Physical Review Applied. 20(4), 044054.'
  mla: 'Zemlicka, Martin, et al. “Compact Vacuum-Gap Transmon Qubits: Selective and
    Sensitive Probes for Superconductor Surface Losses.” <i>Physical Review Applied</i>,
    vol. 20, no. 4, 044054, American Physical Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevApplied.20.044054">10.1103/PhysRevApplied.20.044054</a>.'
  short: M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh,
    J.M. Fink, Physical Review Applied 20 (2023).
date_created: 2023-11-12T23:00:55Z
date_published: 2023-10-20T00:00:00Z
date_updated: 2024-08-07T07:11:55Z
day: '20'
department:
- _id: JoFi
doi: 10.1103/PhysRevApplied.20.044054
ec_funded: 1
external_id:
  arxiv:
  - '2206.14104'
intvolume: '        20'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2206.14104
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2
  name: Protected states of quantum matter
- _id: 258047B6-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '707438'
  name: 'Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination
    with cavity Optomechanics SUPEREOM'
- _id: bdb7cfc1-d553-11ed-ba76-d2eaab167738
  grant_number: '101080139'
  name: Open Superconducting Quantum Computers (OpenSuperQPlus)
publication: Physical Review Applied
publication_identifier:
  eissn:
  - 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  record:
  - id: '14520'
    relation: research_data
    status: public
scopus_import: '1'
status: public
title: 'Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor
  surface losses'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
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
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- 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).
date_created: 2023-06-04T22:01:02Z
date_published: 2023-05-24T00:00:00Z
date_updated: 2024-08-07T07:11:50Z
day: '24'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-023-38761-6
ec_funded: 1
external_id:
  arxiv:
  - '2205.03293'
  isi:
  - '001001099700002'
file:
- access_level: open_access
  checksum: a857df40f0882859c48a1ff1e2001ec2
  content_type: application/pdf
  creator: dernst
  date_created: 2023-06-06T07:31:20Z
  date_updated: 2023-06-06T07:31:20Z
  file_id: '13123'
  file_name: 2023_NaturePhysics_Redchenko.pdf
  file_size: 1654389
  relation: main_file
  success: 1
file_date_updated: 2023-06-06T07:31:20Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _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
publication: Nature Communications
publication_identifier:
  eissn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '13124'
    relation: research_data
    status: public
scopus_import: '1'
status: public
title: Tunable directional photon scattering from a pair of superconducting 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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 14
year: '2023'
...
---
_id: '13124'
abstract:
- lang: eng
  text: This dataset comprises all data shown in the figures of the submitted article
    "Tunable directional photon scattering from a pair of superconducting qubits"
    at arXiv:2205.03293. Additional raw data are available from the corresponding
    author on reasonable request.
article_processing_charge: No
author:
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Alexander
  full_name: Poshakinskiy, Alexander
  last_name: Poshakinskiy
- first_name: Riya
  full_name: Sett, Riya
  id: 2E6D040E-F248-11E8-B48F-1D18A9856A87
  last_name: Sett
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- first_name: Alexander
  full_name: Poddubny, Alexander
  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 A, Sett R, Zemlicka M, Poddubny A, Fink JM. Tunable
    directional photon scattering from a pair of superconducting qubits. 2023. doi:<a
    href="https://doi.org/10.5281/ZENODO.7858567">10.5281/ZENODO.7858567</a>
  apa: Redchenko, E., Poshakinskiy, A., Sett, R., Zemlicka, M., Poddubny, A., &#38;
    Fink, J. M. (2023). Tunable directional photon scattering from a pair of superconducting
    qubits. Zenodo. <a href="https://doi.org/10.5281/ZENODO.7858567">https://doi.org/10.5281/ZENODO.7858567</a>
  chicago: Redchenko, Elena, Alexander Poshakinskiy, Riya Sett, Martin Zemlicka, Alexander
    Poddubny, and Johannes M Fink. “Tunable Directional Photon Scattering from a Pair
    of Superconducting Qubits.” Zenodo, 2023. <a href="https://doi.org/10.5281/ZENODO.7858567">https://doi.org/10.5281/ZENODO.7858567</a>.
  ieee: E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, and J. M.
    Fink, “Tunable directional photon scattering from a pair of superconducting qubits.”
    Zenodo, 2023.
  ista: Redchenko E, Poshakinskiy A, Sett R, Zemlicka M, Poddubny A, Fink JM. 2023.
    Tunable directional photon scattering from a pair of superconducting qubits, Zenodo,
    <a href="https://doi.org/10.5281/ZENODO.7858567">10.5281/ZENODO.7858567</a>.
  mla: Redchenko, Elena, et al. <i>Tunable Directional Photon Scattering from a Pair
    of Superconducting Qubits</i>. Zenodo, 2023, doi:<a href="https://doi.org/10.5281/ZENODO.7858567">10.5281/ZENODO.7858567</a>.
  short: E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, J.M. Fink,
    (2023).
date_created: 2023-06-06T07:36:50Z
date_published: 2023-04-28T00:00:00Z
date_updated: 2024-09-10T12:23:51Z
day: '28'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.7858567
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/zenodo.7858567
month: '04'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
  record:
  - id: '13117'
    relation: used_in_publication
    status: public
status: public
title: Tunable directional photon scattering from a pair of superconducting 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_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '13227'
abstract:
- lang: eng
  text: Currently available quantum processors are dominated by noise, which severely
    limits their applicability and motivates the search for new physical qubit encodings.
    In this work, we introduce the inductively shunted transmon, a weakly flux-tunable
    superconducting qubit that offers charge offset protection for all levels and
    a 20-fold reduction in flux dispersion compared to the state-of-the-art resulting
    in a constant coherence over a full flux quantum. The parabolic confinement provided
    by the inductive shunt as well as the linearity of the geometric superinductor
    facilitates a high-power readout that resolves quantum jumps with a fidelity and
    QND-ness of >90% and without the need for a Josephson parametric amplifier. Moreover,
    the device reveals quantum tunneling physics between the two prepared fluxon ground
    states with a measured average decay time of up to 3.5 h. In the future, fast
    time-domain control of the transition matrix elements could offer a new path forward
    to also achieve full qubit control in the decay-protected fluxon basis.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: The authors thank J. Koch for discussions and support with the scQubits
  python package, I. Rozhansky and A. Poddubny for important insights into photon-assisted
  tunneling, S. Barzanjeh and G. Arnold for theory, E. Redchenko, S. Pepic, the MIBA
  workshop and the IST nanofabrication facility for technical contributions, as well
  as L. Drmic, P. Zielinski and R. Sett for software development. We acknowledge the
  prompt support of Quantum Machines to implement active state preparation with their
  OPX+. This work was supported by a NOMIS foundation research grant (J.F.), the Austrian
  Science Fund (FWF) through BeyondC F7105 (J.F.) and IST Austria.
article_number: '3968'
article_processing_charge: No
article_type: original
author:
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Lucky
  full_name: Kapoor, Lucky
  id: 84b9700b-15b2-11ec-abd3-831089e67615
  last_name: Kapoor
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- 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: Hassani F, Peruzzo M, Kapoor L, Trioni A, Zemlicka M, Fink JM. Inductively
    shunted transmons exhibit noise insensitive plasmon states and a fluxon decay
    exceeding 3 hours. <i>Nature Communications</i>. 2023;14. doi:<a href="https://doi.org/10.1038/s41467-023-39656-2">10.1038/s41467-023-39656-2</a>
  apa: Hassani, F., Peruzzo, M., Kapoor, L., Trioni, A., Zemlicka, M., &#38; Fink,
    J. M. (2023). Inductively shunted transmons exhibit noise insensitive plasmon
    states and a fluxon decay exceeding 3 hours. <i>Nature Communications</i>. Springer
    Nature. <a href="https://doi.org/10.1038/s41467-023-39656-2">https://doi.org/10.1038/s41467-023-39656-2</a>
  chicago: Hassani, Farid, Matilda Peruzzo, Lucky Kapoor, Andrea Trioni, Martin Zemlicka,
    and Johannes M Fink. “Inductively Shunted Transmons Exhibit Noise Insensitive
    Plasmon States and a Fluxon Decay Exceeding 3 Hours.” <i>Nature Communications</i>.
    Springer Nature, 2023. <a href="https://doi.org/10.1038/s41467-023-39656-2">https://doi.org/10.1038/s41467-023-39656-2</a>.
  ieee: F. Hassani, M. Peruzzo, L. Kapoor, A. Trioni, M. Zemlicka, and J. M. Fink,
    “Inductively shunted transmons exhibit noise insensitive plasmon states and a
    fluxon decay exceeding 3 hours,” <i>Nature Communications</i>, vol. 14. Springer
    Nature, 2023.
  ista: Hassani F, Peruzzo M, Kapoor L, Trioni A, Zemlicka M, Fink JM. 2023. Inductively
    shunted transmons exhibit noise insensitive plasmon states and a fluxon decay
    exceeding 3 hours. Nature Communications. 14, 3968.
  mla: Hassani, Farid, et al. “Inductively Shunted Transmons Exhibit Noise Insensitive
    Plasmon States and a Fluxon Decay Exceeding 3 Hours.” <i>Nature Communications</i>,
    vol. 14, 3968, Springer Nature, 2023, doi:<a href="https://doi.org/10.1038/s41467-023-39656-2">10.1038/s41467-023-39656-2</a>.
  short: F. Hassani, M. Peruzzo, L. Kapoor, A. Trioni, M. Zemlicka, J.M. Fink, Nature
    Communications 14 (2023).
date_created: 2023-07-16T22:01:08Z
date_published: 2023-07-05T00:00:00Z
date_updated: 2023-12-13T11:32:25Z
day: '05'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-023-39656-2
external_id:
  isi:
  - '001024729900009'
  pmid:
  - '37407570'
file:
- access_level: open_access
  checksum: a85773b5fe23516f60f7d5d31b55c200
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-18T08:43:07Z
  date_updated: 2023-07-18T08:43:07Z
  file_id: '13248'
  file_name: 2023_NatureComm_Hassani.pdf
  file_size: 2899592
  relation: main_file
  success: 1
file_date_updated: 2023-07-18T08:43:07Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _id: 2622978C-B435-11E9-9278-68D0E5697425
  name: Hybrid Semiconductor - Superconductor Quantum Devices
publication: Nature Communications
publication_identifier:
  eissn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Inductively shunted transmons exhibit noise insensitive plasmon states and
  a fluxon decay exceeding 3 hours
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'
...
---
_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
- 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
- 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.
date_created: 2023-08-11T07:41:17Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-01-29T11:27:49Z
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:
- access_level: open_access
  checksum: 1fc86d71bfbf836e221c1e925343adc5
  content_type: application/pdf
  creator: dernst
  date_created: 2024-01-29T11:25:38Z
  date_updated: 2024-01-29T11:25:38Z
  file_id: '14899'
  file_name: 2023_NaturePhysics_Mukhopadhyay.pdf
  file_size: 1977706
  relation: main_file
  success: 1
file_date_updated: 2024-01-29T11:25:38Z
has_accepted_license: '1'
intvolume: '        19'
isi: 1
keyword:
- General Physics and Astronomy
language:
- iso: eng
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
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2
  name: Protected states of quantum matter
- _id: bd5b4ec5-d553-11ed-ba76-a6eedb083344
  name: Protected states of quantum matter
publication: Nature Physics
publication_identifier:
  eissn:
  - 1745-2481
  issn:
  - 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superconductivity from a melted insulator in Josephson junction arrays
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: 19
year: '2023'
...
---
_id: '14520'
abstract:
- lang: eng
  text: 'This dataset comprises all data shown in the figures of the submitted article
    "Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor
    surface losses" at arxiv.org/abs/2206.14104. Additional raw data are available
    from the corresponding author on reasonable request.'
article_processing_charge: No
author:
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Shabir
  full_name: Barzanjeh, Shabir
  id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
  last_name: Barzanjeh
  orcid: 0000-0003-0415-1423
- 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: 'Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum gap transmon qubits:
    Selective and sensitive probes for superconductor surface losses. 2022. doi:<a
    href="https://doi.org/10.5281/ZENODO.8408897">10.5281/ZENODO.8408897</a>'
  apa: 'Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh,
    S., &#38; Fink, J. M. (2022). Compact vacuum gap transmon qubits: Selective and
    sensitive probes for superconductor surface losses. Zenodo. <a href="https://doi.org/10.5281/ZENODO.8408897">https://doi.org/10.5281/ZENODO.8408897</a>'
  chicago: 'Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea
    Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum Gap Transmon Qubits:
    Selective and Sensitive Probes for Superconductor Surface Losses.” Zenodo, 2022.
    <a href="https://doi.org/10.5281/ZENODO.8408897">https://doi.org/10.5281/ZENODO.8408897</a>.'
  ieee: 'M. Zemlicka <i>et al.</i>, “Compact vacuum gap transmon qubits: Selective
    and sensitive probes for superconductor surface losses.” Zenodo, 2022.'
  ista: 'Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink
    JM. 2022. Compact vacuum gap transmon qubits: Selective and sensitive probes for
    superconductor surface losses, Zenodo, <a href="https://doi.org/10.5281/ZENODO.8408897">10.5281/ZENODO.8408897</a>.'
  mla: 'Zemlicka, Martin, et al. <i>Compact Vacuum Gap Transmon Qubits: Selective
    and Sensitive Probes for Superconductor Surface Losses</i>. Zenodo, 2022, doi:<a
    href="https://doi.org/10.5281/ZENODO.8408897">10.5281/ZENODO.8408897</a>.'
  short: M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh,
    J.M. Fink, (2022).
date_created: 2023-11-13T08:09:10Z
date_published: 2022-06-28T00:00:00Z
date_updated: 2024-09-10T12:23:57Z
day: '28'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.8408897
has_accepted_license: '1'
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/ZENODO.8408897
month: '06'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
  record:
  - id: '14517'
    relation: used_in_publication
    status: public
status: public
title: 'Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor
  surface losses'
tmp:
  image: /images/cc_0.png
  legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
  name: Creative Commons Public Domain Dedication (CC0 1.0)
  short: CC0 (1.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '13057'
abstract:
- lang: eng
  text: 'This dataset comprises all data shown in the figures of the submitted article
    "Geometric superinductance qubits: Controlling phase delocalization across a single
    Josephson junction". Additional raw data are available from the corresponding
    author on reasonable request.'
article_processing_charge: No
author:
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Grisha
  full_name: Szep, Grisha
  last_name: Szep
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- 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: 'Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling
    phase delocalization across a single Josephson junction. 2021. doi:<a href="https://doi.org/10.5281/ZENODO.5592103">10.5281/ZENODO.5592103</a>'
  apa: 'Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M.,
    &#38; Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase
    delocalization across a single Josephson junction. Zenodo. <a href="https://doi.org/10.5281/ZENODO.5592103">https://doi.org/10.5281/ZENODO.5592103</a>'
  chicago: 'Peruzzo, Matilda, Farid Hassani, Grisha Szep, Andrea Trioni, Elena Redchenko,
    Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling
    Phase Delocalization across a Single Josephson Junction.” Zenodo, 2021. <a href="https://doi.org/10.5281/ZENODO.5592103">https://doi.org/10.5281/ZENODO.5592103</a>.'
  ieee: 'M. Peruzzo <i>et al.</i>, “Geometric superinductance qubits: Controlling
    phase delocalization across a single Josephson junction.” Zenodo, 2021.'
  ista: 'Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM.
    2021. Geometric superinductance qubits: Controlling phase delocalization across
    a single Josephson junction, Zenodo, <a href="https://doi.org/10.5281/ZENODO.5592103">10.5281/ZENODO.5592103</a>.'
  mla: 'Peruzzo, Matilda, et al. <i>Geometric Superinductance Qubits: Controlling
    Phase Delocalization across a Single Josephson Junction</i>. Zenodo, 2021, doi:<a
    href="https://doi.org/10.5281/ZENODO.5592103">10.5281/ZENODO.5592103</a>.'
  short: M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M.
    Fink, (2021).
date_created: 2023-05-23T13:42:27Z
date_published: 2021-10-22T00:00:00Z
date_updated: 2023-08-11T10:44:21Z
day: '22'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.5592103
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/zenodo.5592104
month: '10'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
  record:
  - id: '9928'
    relation: used_in_publication
    status: public
status: public
title: 'Geometric superinductance qubits: Controlling phase delocalization across
  a single Josephson junction'
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_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9928'
abstract:
- lang: eng
  text: There are two elementary superconducting qubit types that derive directly
    from the quantum harmonic oscillator. In one, the inductor is replaced by a nonlinear
    Josephson junction to realize the widely used charge qubits with a compact phase
    variable and a discrete charge wave function. In the other, the junction is added
    in parallel, which gives rise to an extended phase variable, continuous wave functions,
    and a rich energy-level structure due to the loop topology. While the corresponding
    rf superconducting quantum interference device Hamiltonian was introduced as a
    quadratic quasi-one-dimensional potential approximation to describe the fluxonium
    qubit implemented with long Josephson-junction arrays, in this work we implement
    it directly using a linear superinductor formed by a single uninterrupted aluminum
    wire. We present a large variety of qubits, all stemming from the same circuit
    but with drastically different characteristic energy scales. This includes flux
    and fluxonium qubits but also the recently introduced quasicharge qubit with strongly
    enhanced zero-point phase fluctuations and a heavily suppressed flux dispersion.
    The use of a geometric inductor results in high reproducibility of the inductive
    energy as guaranteed by top-down lithography—a key ingredient for intrinsically
    protected superconducting qubits.
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
acknowledgement: We thank W. Hughes for analytic and numerical modeling during the
  early stages of this work, J. Koch for discussions and support with the scqubits
  package, R. Sett, P. Zielinski, and L. Drmic for software development, and G. Katsaros
  for equipment support, as well as the MIBA workshop and the Institute of Science
  and Technology Austria nanofabrication facility. We thank I. Pop, S. Deleglise,
  and E. Flurin for discussions. This work was supported by a NOMIS Foundation research
  grant, the Austrian Science Fund (FWF) through BeyondC (F7105), and IST Austria.
  M.P. is the recipient of a Pöttinger scholarship at IST Austria. E.R. is the recipient
  of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Gregory
  full_name: Szep, Gregory
  last_name: Szep
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- 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: 'Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling
    phase delocalization across a single Josephson junction. <i>PRX Quantum</i>. 2021;2(4):040341.
    doi:<a href="https://doi.org/10.1103/PRXQuantum.2.040341">10.1103/PRXQuantum.2.040341</a>'
  apa: 'Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M.,
    &#38; Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase
    delocalization across a single Josephson junction. <i>PRX Quantum</i>. American
    Physical Society. <a href="https://doi.org/10.1103/PRXQuantum.2.040341">https://doi.org/10.1103/PRXQuantum.2.040341</a>'
  chicago: 'Peruzzo, Matilda, Farid Hassani, Gregory Szep, Andrea Trioni, Elena Redchenko,
    Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling
    Phase Delocalization across a Single Josephson Junction.” <i>PRX Quantum</i>.
    American Physical Society, 2021. <a href="https://doi.org/10.1103/PRXQuantum.2.040341">https://doi.org/10.1103/PRXQuantum.2.040341</a>.'
  ieee: 'M. Peruzzo <i>et al.</i>, “Geometric superinductance qubits: Controlling
    phase delocalization across a single Josephson junction,” <i>PRX Quantum</i>,
    vol. 2, no. 4. American Physical Society, p. 040341, 2021.'
  ista: 'Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM.
    2021. Geometric superinductance qubits: Controlling phase delocalization across
    a single Josephson junction. PRX Quantum. 2(4), 040341.'
  mla: 'Peruzzo, Matilda, et al. “Geometric Superinductance Qubits: Controlling Phase
    Delocalization across a Single Josephson Junction.” <i>PRX Quantum</i>, vol. 2,
    no. 4, American Physical Society, 2021, p. 040341, doi:<a href="https://doi.org/10.1103/PRXQuantum.2.040341">10.1103/PRXQuantum.2.040341</a>.'
  short: M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M.
    Fink, PRX Quantum 2 (2021) 040341.
date_created: 2021-08-17T08:14:18Z
date_published: 2021-11-24T00:00:00Z
date_updated: 2023-09-07T13:31:22Z
day: '24'
ddc:
- '530'
department:
- _id: JoFi
- _id: NanoFab
- _id: M-Shop
doi: 10.1103/PRXQuantum.2.040341
ec_funded: 1
external_id:
  arxiv:
  - '2106.05882'
  isi:
  - '000723015100001'
file:
- access_level: open_access
  checksum: 36eb41ea43d8ca22b0efab12419e4eb2
  content_type: application/pdf
  creator: cchlebak
  date_created: 2022-01-18T11:29:33Z
  date_updated: 2022-01-18T11:29:33Z
  file_id: '10641'
  file_name: 2021_PRXQuantum_Peruzzo.pdf
  file_size: 4247422
  relation: main_file
  success: 1
file_date_updated: 2022-01-18T11:29:33Z
has_accepted_license: '1'
intvolume: '         2'
isi: 1
issue: '4'
keyword:
- quantum physics
- mesoscale and nanoscale physics
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: '040341'
project:
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 2622978C-B435-11E9-9278-68D0E5697425
  name: Hybrid Semiconductor - Superconductor Quantum Devices
publication: PRX Quantum
publication_identifier:
  eissn:
  - 2691-3399
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  record:
  - id: '13057'
    relation: research_data
    status: public
  - id: '9920'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: 'Geometric superinductance qubits: Controlling phase delocalization across
  a single Josephson junction'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 2
year: '2021'
...
---
_id: '8755'
abstract:
- lang: eng
  text: 'The superconducting circuit community has recently discovered the promising
    potential of superinductors. These circuit elements have a characteristic impedance
    exceeding the resistance quantum RQ ≈ 6.45 kΩ which leads to a suppression of
    ground state charge fluctuations. Applications include the realization of hardware
    protected qubits for fault tolerant quantum computing, improved coupling to small
    dipole moment objects and defining a new quantum metrology standard for the ampere.
    In this work we refute the widespread notion that superinductors can only be implemented
    based on kinetic inductance, i.e. using disordered superconductors or Josephson
    junction arrays. We present modeling, fabrication and characterization of 104
    planar aluminum coil resonators with a characteristic impedance up to 30.9 kΩ
    at 5.6 GHz and a capacitance down to ≤ 1 fF, with lowloss and a power handling
    reaching 108 intra-cavity photons. Geometric superinductors are free of uncontrolled
    tunneling events and offer high reproducibility, linearity and the ability to
    couple magnetically - properties that significantly broaden the scope of future
    quantum circuits. '
acknowledged_ssus:
- _id: NanoFab
acknowledgement: "The authors acknowledge the support from I. Prieto and the IST Nanofabrication
  Facility. This work was supported by IST Austria and a NOMIS foundation research
  grant and the Austrian Science Fund (FWF) through BeyondC (F71). MP is the recipient
  of a P¨ottinger scholarship at IST Austria. JMF acknowledges support from the European
  Union’s Horizon 2020 research and innovation programs under grant agreement No 732894
  (FET Proactive HOT), 862644 (FET Open QUARTET), and the European Research Council
  under grant agreement\r\nnumber 758053 (ERC StG QUNNECT). "
article_number: '044055'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- 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: Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. Surpassing the resistance
    quantum with a geometric superinductor. <i>Physical Review Applied</i>. 2020;14(4).
    doi:<a href="https://doi.org/10.1103/PhysRevApplied.14.044055">10.1103/PhysRevApplied.14.044055</a>
  apa: Peruzzo, M., Trioni, A., Hassani, F., Zemlicka, M., &#38; Fink, J. M. (2020).
    Surpassing the resistance quantum with a geometric superinductor. <i>Physical
    Review Applied</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevApplied.14.044055">https://doi.org/10.1103/PhysRevApplied.14.044055</a>
  chicago: Peruzzo, Matilda, Andrea Trioni, Farid Hassani, Martin Zemlicka, and Johannes
    M Fink. “Surpassing the Resistance Quantum with a Geometric Superinductor.” <i>Physical
    Review Applied</i>. American Physical Society, 2020. <a href="https://doi.org/10.1103/PhysRevApplied.14.044055">https://doi.org/10.1103/PhysRevApplied.14.044055</a>.
  ieee: M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, and J. M. Fink, “Surpassing
    the resistance quantum with a geometric superinductor,” <i>Physical Review Applied</i>,
    vol. 14, no. 4. American Physical Society, 2020.
  ista: Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. 2020. Surpassing the
    resistance quantum with a geometric superinductor. Physical Review Applied. 14(4),
    044055.
  mla: Peruzzo, Matilda, et al. “Surpassing the Resistance Quantum with a Geometric
    Superinductor.” <i>Physical Review Applied</i>, vol. 14, no. 4, 044055, American
    Physical Society, 2020, doi:<a href="https://doi.org/10.1103/PhysRevApplied.14.044055">10.1103/PhysRevApplied.14.044055</a>.
  short: M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, J.M. Fink, Physical Review
    Applied 14 (2020).
date_created: 2020-11-15T23:01:17Z
date_published: 2020-10-29T00:00:00Z
date_updated: 2024-08-07T07:11:55Z
day: '29'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1103/PhysRevApplied.14.044055
ec_funded: 1
external_id:
  arxiv:
  - '2007.01644'
  isi:
  - '000582797300003'
file:
- access_level: open_access
  checksum: 2a634abe75251ae7628cd54c8a4ce2e8
  content_type: application/pdf
  creator: dernst
  date_created: 2021-03-29T11:43:20Z
  date_updated: 2021-03-29T11:43:20Z
  file_id: '9300'
  file_name: 2020_PhysReviewApplied_Peruzzo.pdf
  file_size: 2607823
  relation: main_file
  success: 1
file_date_updated: 2021-03-29T11:43:20Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
issue: '4'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _id: 257EB838-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '732894'
  name: Hybrid Optomechanical Technologies
- _id: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
  call_identifier: H2020
  grant_number: '862644'
  name: Quantum readout techniques and technologies
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
publication: Physical Review Applied
publication_identifier:
  eissn:
  - '23317019'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  record:
  - id: '13070'
    relation: research_data
    status: public
  - id: '9920'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Surpassing the resistance quantum with a geometric superinductor
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 14
year: '2020'
...
---
_id: '8944'
abstract:
- lang: eng
  text: "Superconductor insulator transition in transverse magnetic field is studied
    in the highly disordered MoC film with the product of the Fermi momentum and the
    mean free path kF*l close to unity. Surprisingly, the Zeeman paramagnetic effects
    dominate over orbital coupling on both sides of the transition. In superconducting
    state it is evidenced by a high upper critical magnetic field \U0001D435\U0001D4502,
    by its square root dependence on temperature, as well as by the Zeeman splitting
    of the quasiparticle density of states (DOS) measured by scanning tunneling microscopy.
    At \U0001D435\U0001D4502 a logarithmic anomaly in DOS is observed. This anomaly
    is further enhanced in increasing magnetic field, which is explained by the Zeeman
    splitting of the Altshuler-Aronov DOS driving\r\nthe system into a more insulating
    or resistive state. Spin dependent Altshuler-Aronov correction is also needed
    to explain the transport behavior above \U0001D435\U0001D4502."
acknowledgement: 'We gratefully acknowledge helpful conversations with B.L. Altshuler
  and R. Hlubina. The work was supported by the projects APVV-18-0358, VEGA 2/0058/20,
  VEGA 1/0743/19 the European Microkelvin Platform, the COST action CA16218 (Nanocohybri)
  and by U.S. Steel Košice. '
article_number: '180508'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- first_name: M.
  full_name: Kopčík, M.
  last_name: Kopčík
- first_name: P.
  full_name: Szabó, P.
  last_name: Szabó
- first_name: T.
  full_name: Samuely, T.
  last_name: Samuely
- first_name: J.
  full_name: Kačmarčík, J.
  last_name: Kačmarčík
- first_name: P.
  full_name: Neilinger, P.
  last_name: Neilinger
- first_name: M.
  full_name: Grajcar, M.
  last_name: Grajcar
- first_name: P.
  full_name: Samuely, P.
  last_name: Samuely
citation:
  ama: 'Zemlicka M, Kopčík M, Szabó P, et al. Zeeman-driven superconductor-insulator
    transition in strongly disordered MoC films: Scanning tunneling microscopy and
    transport studies in a transverse magnetic field. <i>Physical Review B</i>. 2020;102(18).
    doi:<a href="https://doi.org/10.1103/PhysRevB.102.180508">10.1103/PhysRevB.102.180508</a>'
  apa: 'Zemlicka, M., Kopčík, M., Szabó, P., Samuely, T., Kačmarčík, J., Neilinger,
    P., … Samuely, P. (2020). Zeeman-driven superconductor-insulator transition in
    strongly disordered MoC films: Scanning tunneling microscopy and transport studies
    in a transverse magnetic field. <i>Physical Review B</i>. American Physical Society.
    <a href="https://doi.org/10.1103/PhysRevB.102.180508">https://doi.org/10.1103/PhysRevB.102.180508</a>'
  chicago: 'Zemlicka, Martin, M. Kopčík, P. Szabó, T. Samuely, J. Kačmarčík, P. Neilinger,
    M. Grajcar, and P. Samuely. “Zeeman-Driven Superconductor-Insulator Transition
    in Strongly Disordered MoC Films: Scanning Tunneling Microscopy and Transport
    Studies in a Transverse Magnetic Field.” <i>Physical Review B</i>. American Physical
    Society, 2020. <a href="https://doi.org/10.1103/PhysRevB.102.180508">https://doi.org/10.1103/PhysRevB.102.180508</a>.'
  ieee: 'M. Zemlicka <i>et al.</i>, “Zeeman-driven superconductor-insulator transition
    in strongly disordered MoC films: Scanning tunneling microscopy and transport
    studies in a transverse magnetic field,” <i>Physical Review B</i>, vol. 102, no.
    18. American Physical Society, 2020.'
  ista: 'Zemlicka M, Kopčík M, Szabó P, Samuely T, Kačmarčík J, Neilinger P, Grajcar
    M, Samuely P. 2020. Zeeman-driven superconductor-insulator transition in strongly
    disordered MoC films: Scanning tunneling microscopy and transport studies in a
    transverse magnetic field. Physical Review B. 102(18), 180508.'
  mla: 'Zemlicka, Martin, et al. “Zeeman-Driven Superconductor-Insulator Transition
    in Strongly Disordered MoC Films: Scanning Tunneling Microscopy and Transport
    Studies in a Transverse Magnetic Field.” <i>Physical Review B</i>, vol. 102, no.
    18, 180508, American Physical Society, 2020, doi:<a href="https://doi.org/10.1103/PhysRevB.102.180508">10.1103/PhysRevB.102.180508</a>.'
  short: M. Zemlicka, M. Kopčík, P. Szabó, T. Samuely, J. Kačmarčík, P. Neilinger,
    M. Grajcar, P. Samuely, Physical Review B 102 (2020).
date_created: 2020-12-13T23:01:21Z
date_published: 2020-11-01T00:00:00Z
date_updated: 2023-08-24T10:53:36Z
day: '01'
department:
- _id: JoFi
doi: 10.1103/PhysRevB.102.180508
external_id:
  arxiv:
  - '2011.04329'
  isi:
  - '000591509900003'
intvolume: '       102'
isi: 1
issue: '18'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2011.04329
month: '11'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
  eissn:
  - '24699969'
  issn:
  - '24699950'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Zeeman-driven superconductor-insulator transition in strongly disordered MoC
  films: Scanning tunneling microscopy and transport studies in a transverse magnetic
  field'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 102
year: '2020'
...
---
_id: '13070'
abstract:
- lang: eng
  text: This dataset comprises all data shown in the figures of the submitted article
    "Surpassing the resistance quantum with a geometric superinductor". Additional
    raw data are available from the corresponding author on reasonable request.
article_processing_charge: No
author:
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Andrea
  full_name: Trioni, Andrea
  id: 42F71B44-F248-11E8-B48F-1D18A9856A87
  last_name: Trioni
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
- 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: Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. Surpassing the resistance
    quantum with a geometric superinductor. 2020. doi:<a href="https://doi.org/10.5281/ZENODO.4052882">10.5281/ZENODO.4052882</a>
  apa: Peruzzo, M., Trioni, A., Hassani, F., Zemlicka, M., &#38; Fink, J. M. (2020).
    Surpassing the resistance quantum with a geometric superinductor. Zenodo. <a href="https://doi.org/10.5281/ZENODO.4052882">https://doi.org/10.5281/ZENODO.4052882</a>
  chicago: Peruzzo, Matilda, Andrea Trioni, Farid Hassani, Martin Zemlicka, and Johannes
    M Fink. “Surpassing the Resistance Quantum with a Geometric Superinductor.” Zenodo,
    2020. <a href="https://doi.org/10.5281/ZENODO.4052882">https://doi.org/10.5281/ZENODO.4052882</a>.
  ieee: M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, and J. M. Fink, “Surpassing
    the resistance quantum with a geometric superinductor.” Zenodo, 2020.
  ista: Peruzzo M, Trioni A, Hassani F, Zemlicka M, Fink JM. 2020. Surpassing the
    resistance quantum with a geometric superinductor, Zenodo, <a href="https://doi.org/10.5281/ZENODO.4052882">10.5281/ZENODO.4052882</a>.
  mla: Peruzzo, Matilda, et al. <i>Surpassing the Resistance Quantum with a Geometric
    Superinductor</i>. Zenodo, 2020, doi:<a href="https://doi.org/10.5281/ZENODO.4052882">10.5281/ZENODO.4052882</a>.
  short: M. Peruzzo, A. Trioni, F. Hassani, M. Zemlicka, J.M. Fink, (2020).
date_created: 2023-05-23T16:42:30Z
date_published: 2020-09-27T00:00:00Z
date_updated: 2024-09-10T12:23:56Z
day: '27'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.4052882
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/zenodo.4052883
month: '09'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
  record:
  - id: '8755'
    relation: used_in_publication
    status: public
status: public
title: Surpassing the resistance quantum with a geometric superinductor
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_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...
