---
_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: '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
license: https://creativecommons.org/licenses/by/4.0/
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: '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'
license: https://creativecommons.org/publicdomain/zero/1.0/
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:
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    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: '10644'
abstract:
- lang: eng
  text: The purpose of this application note is to demonstrate a working example of
    a superconducting qubit measurement in a Bluefors cryostat using the Keysight
    quantum control hardware. Our motivation is twofold. First, we provide pre-qualification
    data that the Bluefors cryostat, including filtering and wiring, can support long-lived
    qubits. Second, we demonstrate that the Keysight system (controlled using Labber)
    provides a straightforward solution to perform these characterization measurements.
    This document is intended as a brief guide for starting an experimental platform
    for testing superconducting qubits. The setup described here is an immediate jumping
    off point for a suite of applications including testing quantum logical gates,
    quantum optics with microwaves, or even using the qubit itself as a sensitive
    probe of local electromagnetic fields. Qubit measurements rely on high performance
    of both the physical sample environment and the measurement electronics. An overview
    of the cryogenic system is shown in Figure 1, and an overview of the integration
    between the electronics and cryostat (including wiring details) is shown in Figure
    2.
alternative_title:
- Bluefors Blog
article_processing_charge: No
author:
- first_name: Russell
  full_name: Lake, Russell
  last_name: Lake
- first_name: Slawomir
  full_name: Simbierowicz, Slawomir
  last_name: Simbierowicz
- first_name: Philip
  full_name: Krantz, Philip
  last_name: Krantz
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
- 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: 'Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. <i>The Bluefors Dilution
    Refrigerator as an Integrated Quantum Measurement System</i>. Helsinki, Finland:
    Bluefors Oy; 2021.'
  apa: 'Lake, R., Simbierowicz, S., Krantz, P., Hassani, F., &#38; Fink, J. M. (2021).
    <i>The Bluefors dilution refrigerator as an integrated quantum measurement system</i>.
    Helsinki, Finland: Bluefors Oy.'
  chicago: 'Lake, Russell, Slawomir Simbierowicz, Philip Krantz, Farid Hassani, and
    Johannes M Fink. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum
    Measurement System</i>. Helsinki, Finland: Bluefors Oy, 2021.'
  ieee: 'R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, and J. M. Fink, <i>The Bluefors
    dilution refrigerator as an integrated quantum measurement system</i>. Helsinki,
    Finland: Bluefors Oy, 2021.'
  ista: 'Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. 2021. The Bluefors
    dilution refrigerator as an integrated quantum measurement system, Helsinki, Finland:
    Bluefors Oy, 9p.'
  mla: Lake, Russell, et al. <i>The Bluefors Dilution Refrigerator as an Integrated
    Quantum Measurement System</i>. Bluefors Oy, 2021.
  short: R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, J.M. Fink, The Bluefors
    Dilution Refrigerator as an Integrated Quantum Measurement System, Bluefors Oy,
    Helsinki, Finland, 2021.
date_created: 2022-01-19T08:29:57Z
date_published: 2021-04-20T00:00:00Z
date_updated: 2022-01-19T09:11:33Z
day: '20'
department:
- _id: JoFi
keyword:
- Application note
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://bluefors.com/blog/integrated-quantum-measurement-system/
month: '04'
oa: 1
oa_version: Published Version
page: '9'
place: Helsinki, Finland
publication_status: published
publisher: Bluefors Oy
quality_controlled: '1'
status: public
title: The Bluefors dilution refrigerator as an integrated quantum measurement system
type: other_academic_publication
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '10645'
abstract:
- lang: eng
  text: "Superconducting qubits have emerged as a highly versatile and useful platform
    for quantum technological applications [1]. Bluefors and Zurich Instruments have
    supported the growth of this field from the 2010s onwards by providing well-engineered
    and reliable measurement infrastructure [2]– [6]. Having a long and stable qubit
    lifetime is a critical system property. Therefore, considerable effort has already
    gone into measuring qubit energy-relaxation timescales and their fluctuations,
    see Refs. [7]–[10] among others. Accurately extracting the statistics of a quantum
    device requires users to perform time consuming measurements. One measurement
    challenge is that the detection of the state-dependent\r\nresponse of a superconducting
    resonator due to a dispersively-coupled qubit requires an inherently low signal
    level. Consequently, measurements must be performed using a microwave probe that
    contains only a few microwave photons. Improving the signal-to-noise ratio (SNR)
    by using near-quantum limited parametric amplifiers as well as the use of optimized
    signal processing enabled by efficient room temperature instrumentation help to
    reduce measurement time. An empirical observation for fixed frequency transmons
    from recent literature is that as the energy-relaxation time \U0001D447\U0001D4471
    increases, so do its natural temporal fluctuations [7], [10]. This necessitates
    many repeated measurements to understand the statistics (see for example, Ref.
    [10]). In addition, as state-of-the-art qubits increase in lifetime, longer\r\nmeasurement
    times are expected to obtain accurate statistics. As described below, the scaling
    of the widths of the qubit energy-relaxation distributions also reveal clues about
    the origin of the energy-relaxation."
alternative_title:
- Bluefors Blog
article_processing_charge: No
author:
- first_name: Slawomir
  full_name: Simbierowicz, Slawomir
  last_name: Simbierowicz
- first_name: Chunyan
  full_name: Shi, Chunyan
  last_name: Shi
- first_name: Michele
  full_name: Collodo, Michele
  last_name: Collodo
- first_name: Moritz
  full_name: Kirste, Moritz
  last_name: Kirste
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
- 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: Jonas
  full_name: Bylander, Jonas
  last_name: Bylander
- first_name: Daniel
  full_name: Perez Lozano, Daniel
  last_name: Perez Lozano
- first_name: Russell
  full_name: Lake, Russell
  last_name: Lake
citation:
  ama: 'Simbierowicz S, Shi C, Collodo M, et al. <i>Qubit Energy-Relaxation Statistics
    in the Bluefors Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy;
    2021.'
  apa: 'Simbierowicz, S., Shi, C., Collodo, M., Kirste, M., Hassani, F., Fink, J.
    M., … Lake, R. (2021). <i>Qubit energy-relaxation statistics in the Bluefors quantum
    measurement system</i>. Helsinki, Finland: Bluefors Oy.'
  chicago: 'Simbierowicz, Slawomir, Chunyan Shi, Michele Collodo, Moritz Kirste, Farid
    Hassani, Johannes M Fink, Jonas Bylander, Daniel Perez Lozano, and Russell Lake.
    <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>.
    Helsinki, Finland: Bluefors Oy, 2021.'
  ieee: 'S. Simbierowicz <i>et al.</i>, <i>Qubit energy-relaxation statistics in the
    Bluefors quantum measurement system</i>. Helsinki, Finland: Bluefors Oy, 2021.'
  ista: 'Simbierowicz S, Shi C, Collodo M, Kirste M, Hassani F, Fink JM, Bylander
    J, Perez Lozano D, Lake R. 2021. Qubit energy-relaxation statistics in the Bluefors
    quantum measurement system, Helsinki, Finland: Bluefors Oy, 8p.'
  mla: Simbierowicz, Slawomir, et al. <i>Qubit Energy-Relaxation Statistics in the
    Bluefors Quantum Measurement System</i>. Bluefors Oy, 2021.
  short: S. Simbierowicz, C. Shi, M. Collodo, M. Kirste, F. Hassani, J.M. Fink, J.
    Bylander, D. Perez Lozano, R. Lake, Qubit Energy-Relaxation Statistics in the
    Bluefors Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.
date_created: 2022-01-19T08:41:14Z
date_published: 2021-06-03T00:00:00Z
date_updated: 2022-01-19T09:11:39Z
day: '03'
department:
- _id: JoFi
keyword:
- Application note
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://bluefors.com/blog/application-note-qubit-energy-relaxation-statistics-bluefors-quantum-measurement-system/
month: '06'
oa: 1
oa_version: Published Version
page: '8'
place: Helsinki, Finland
publication_status: published
publisher: Bluefors Oy
quality_controlled: '1'
status: public
title: Qubit energy-relaxation statistics in the Bluefors quantum measurement system
type: other_academic_publication
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
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: '8529'
abstract:
- lang: eng
  text: Practical quantum networks require low-loss and noise-resilient optical interconnects
    as well as non-Gaussian resources for entanglement distillation and distributed
    quantum computation. The latter could be provided by superconducting circuits
    but existing solutions to interface the microwave and optical domains lack either
    scalability or efficiency, and in most cases the conversion noise is not known.
    In this work we utilize the unique opportunities of silicon photonics, cavity
    optomechanics and superconducting circuits to demonstrate a fully integrated,
    coherent transducer interfacing the microwave X and the telecom S bands with a
    total (internal) bidirectional transduction efficiency of 1.2% (135%) at millikelvin
    temperatures. The coupling relies solely on the radiation pressure interaction
    mediated by the femtometer-scale motion of two silicon nanobeams reaching a <jats:italic>V</jats:italic><jats:sub><jats:italic>π</jats:italic></jats:sub>
    as low as 16 μV for sub-nanowatt pump powers. Without the associated optomechanical
    gain, we achieve a total (internal) pure conversion efficiency of up to 0.019%
    (1.6%), relevant for future noise-free operation on this qubit-compatible platform.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: We thank Yuan Chen for performing supplementary FEM simulations and
  Andrew Higginbotham, Ralf Riedinger, Sungkun Hong, and Lorenzo Magrini for valuable
  discussions. This work was supported by IST Austria, the IST nanofabrication facility
  (NFF), the European Union’s Horizon 2020 research and innovation program under grant
  agreement no. 732894 (FET Proactive HOT) and the European Research Council under
  grant agreement no. 758053 (ERC StG QUNNECT). G.A. is the recipient of a DOC fellowship
  of the Austrian Academy of Sciences at IST Austria. 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 Sklodowska-Curie grant agreement
  no. 754411. J.M.F. acknowledges support from the Austrian Science Fund (FWF) through
  BeyondC (F71), a NOMIS foundation research grant, and the EU’s Horizon 2020 research
  and innovation program under grant agreement no. 862644 (FET Open QUARTET).
article_number: '4460'
article_processing_charge: No
article_type: original
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: Matthias
  full_name: Wulf, Matthias
  id: 45598606-F248-11E8-B48F-1D18A9856A87
  last_name: Wulf
  orcid: 0000-0001-6613-1378
- first_name: Shabir
  full_name: Barzanjeh, Shabir
  id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
  last_name: Barzanjeh
  orcid: 0000-0003-0415-1423
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Alfredo R
  full_name: Rueda Sanchez, Alfredo R
  id: 3B82B0F8-F248-11E8-B48F-1D18A9856A87
  last_name: Rueda Sanchez
  orcid: 0000-0001-6249-5860
- 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: 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
citation:
  ama: Arnold GM, Wulf M, Barzanjeh S, et al. Converting microwave and telecom photons
    with a silicon photonic nanomechanical interface. <i>Nature Communications</i>.
    2020;11. doi:<a href="https://doi.org/10.1038/s41467-020-18269-z">10.1038/s41467-020-18269-z</a>
  apa: Arnold, G. M., Wulf, M., Barzanjeh, S., Redchenko, E., Rueda Sanchez, A. R.,
    Hease, W. J., … Fink, J. M. (2020). Converting microwave and telecom photons with
    a silicon photonic nanomechanical interface. <i>Nature Communications</i>. Springer
    Nature. <a href="https://doi.org/10.1038/s41467-020-18269-z">https://doi.org/10.1038/s41467-020-18269-z</a>
  chicago: Arnold, Georg M, Matthias Wulf, Shabir Barzanjeh, Elena Redchenko, Alfredo
    R Rueda Sanchez, William J Hease, Farid Hassani, and Johannes M Fink. “Converting
    Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface.”
    <i>Nature Communications</i>. Springer Nature, 2020. <a href="https://doi.org/10.1038/s41467-020-18269-z">https://doi.org/10.1038/s41467-020-18269-z</a>.
  ieee: G. M. Arnold <i>et al.</i>, “Converting microwave and telecom photons with
    a silicon photonic nanomechanical interface,” <i>Nature Communications</i>, vol.
    11. Springer Nature, 2020.
  ista: Arnold GM, Wulf M, Barzanjeh S, Redchenko E, Rueda Sanchez AR, Hease WJ, Hassani
    F, Fink JM. 2020. Converting microwave and telecom photons with a silicon photonic
    nanomechanical interface. Nature Communications. 11, 4460.
  mla: Arnold, Georg M., et al. “Converting Microwave and Telecom Photons with a Silicon
    Photonic Nanomechanical Interface.” <i>Nature Communications</i>, vol. 11, 4460,
    Springer Nature, 2020, doi:<a href="https://doi.org/10.1038/s41467-020-18269-z">10.1038/s41467-020-18269-z</a>.
  short: G.M. Arnold, M. Wulf, S. Barzanjeh, E. Redchenko, A.R. Rueda Sanchez, W.J.
    Hease, F. Hassani, J.M. Fink, Nature Communications 11 (2020).
date_created: 2020-09-18T10:56:20Z
date_published: 2020-09-08T00:00:00Z
date_updated: 2024-08-07T07:11:51Z
day: '08'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-020-18269-z
ec_funded: 1
external_id:
  isi:
  - '000577280200001'
file:
- access_level: open_access
  checksum: 88f92544889eb18bb38e25629a422a86
  content_type: application/pdf
  creator: dernst
  date_created: 2020-09-18T13:02:37Z
  date_updated: 2020-09-18T13:02:37Z
  file_id: '8530'
  file_name: 2020_NatureComm_Arnold.pdf
  file_size: 1002818
  relation: main_file
  success: 1
file_date_updated: 2020-09-18T13:02:37Z
has_accepted_license: '1'
intvolume: '        11'
isi: 1
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 257EB838-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '732894'
  name: Hybrid Optomechanical Technologies
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
  call_identifier: H2020
  grant_number: '862644'
  name: Quantum readout techniques and technologies
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
  name: Coherent on-chip conversion of superconducting qubit signals from microwaves
    to optical frequencies
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - relation: erratum
    url: https://doi.org/10.1038/s41467-020-18912-9
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/how-to-transport-microwave-quantum-information-via-optical-fiber/
  record:
  - id: '13056'
    relation: research_data
    status: public
status: public
title: Converting microwave and telecom photons with a silicon photonic nanomechanical
  interface
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2020'
...
---
_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: '13056'
abstract:
- lang: eng
  text: This datasets comprises all data shown in plots of the submitted article "Converting
    microwave and telecom photons with a silicon photonic nanomechanical interface".
    Additional raw data are available from the corresponding author on reasonable
    request.
article_processing_charge: No
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: Matthias
  full_name: Wulf, Matthias
  id: 45598606-F248-11E8-B48F-1D18A9856A87
  last_name: Wulf
  orcid: 0000-0001-6613-1378
- first_name: Shabir
  full_name: Barzanjeh, Shabir
  id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
  last_name: Barzanjeh
  orcid: 0000-0003-0415-1423
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: Alfredo R
  full_name: Rueda Sanchez, Alfredo R
  id: 3B82B0F8-F248-11E8-B48F-1D18A9856A87
  last_name: Rueda Sanchez
  orcid: 0000-0001-6249-5860
- 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: 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
citation:
  ama: Arnold GM, Wulf M, Barzanjeh S, et al. Converting microwave and telecom photons
    with a silicon photonic nanomechanical interface. 2020. doi:<a href="https://doi.org/10.5281/ZENODO.3961561">10.5281/ZENODO.3961561</a>
  apa: Arnold, G. M., Wulf, M., Barzanjeh, S., Redchenko, E., Rueda Sanchez, A. R.,
    Hease, W. J., … Fink, J. M. (2020). Converting microwave and telecom photons with
    a silicon photonic nanomechanical interface. Zenodo. <a href="https://doi.org/10.5281/ZENODO.3961561">https://doi.org/10.5281/ZENODO.3961561</a>
  chicago: Arnold, Georg M, Matthias Wulf, Shabir Barzanjeh, Elena Redchenko, Alfredo
    R Rueda Sanchez, William J Hease, Farid Hassani, and Johannes M Fink. “Converting
    Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface.”
    Zenodo, 2020. <a href="https://doi.org/10.5281/ZENODO.3961561">https://doi.org/10.5281/ZENODO.3961561</a>.
  ieee: G. M. Arnold <i>et al.</i>, “Converting microwave and telecom photons with
    a silicon photonic nanomechanical interface.” Zenodo, 2020.
  ista: Arnold GM, Wulf M, Barzanjeh S, Redchenko E, Rueda Sanchez AR, Hease WJ, Hassani
    F, Fink JM. 2020. Converting microwave and telecom photons with a silicon photonic
    nanomechanical interface, Zenodo, <a href="https://doi.org/10.5281/ZENODO.3961561">10.5281/ZENODO.3961561</a>.
  mla: Arnold, Georg M., et al. <i>Converting Microwave and Telecom Photons with a
    Silicon Photonic Nanomechanical Interface</i>. Zenodo, 2020, doi:<a href="https://doi.org/10.5281/ZENODO.3961561">10.5281/ZENODO.3961561</a>.
  short: G.M. Arnold, M. Wulf, S. Barzanjeh, E. Redchenko, A.R. Rueda Sanchez, W.J.
    Hease, F. Hassani, J.M. Fink, (2020).
date_created: 2023-05-23T13:37:41Z
date_published: 2020-07-27T00:00:00Z
date_updated: 2024-09-10T12:23:51Z
day: '27'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.3961561
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/zenodo.3961562
month: '07'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
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  - id: '8529'
    relation: used_in_publication
    status: public
status: public
title: Converting microwave and telecom photons with a silicon photonic nanomechanical
  interface
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'
...
---
_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:
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    relation: used_in_publication
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status: public
title: Surpassing the resistance quantum with a geometric superinductor
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: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...
