---
_id: '14846'
abstract:
- lang: eng
  text: Contraction and flow of the actin cell cortex have emerged as a common principle
    by which cells reorganize their cytoplasm and take shape. However, how these cortical
    flows interact with adjacent cytoplasmic components, changing their form and localization,
    and how this affects cytoplasmic organization and cell shape remains unclear.
    Here we show that in ascidian oocytes, the cooperative activities of cortical
    actomyosin flows and deformation of the adjacent mitochondria-rich myoplasm drive
    oocyte cytoplasmic reorganization and shape changes following fertilization. We
    show that vegetal-directed cortical actomyosin flows, established upon oocyte
    fertilization, lead to both the accumulation of cortical actin at the vegetal
    pole of the zygote and compression and local buckling of the adjacent elastic
    solid-like myoplasm layer due to friction forces generated at their interface.
    Once cortical flows have ceased, the multiple myoplasm buckles resolve into one
    larger buckle, which again drives the formation of the contraction pole—a protuberance
    of the zygote’s vegetal pole where maternal mRNAs accumulate. Thus, our findings
    reveal a mechanism where cortical actomyosin network flows determine cytoplasmic
    reorganization and cell shape by deforming adjacent cytoplasmic components through
    friction forces.
acknowledged_ssus:
- _id: EM-Fac
- _id: Bio
- _id: NanoFab
acknowledgement: We would like to thank A. McDougall, E. Hannezo and the Heisenberg
  lab for fruitful discussions and reagents. We also thank E. Munro for the iMyo-YFP
  and Bra>iMyo-mScarlet constructs. This research was supported by the Scientific
  Service Units of the Institute of Science and Technology Austria through resources
  provided by the Electron Microscopy Facility, Imaging and Optics Facility and the
  Nanofabrication Facility. This work was supported by a Joint Project Grant from
  the FWF (I 3601-B27).
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Silvia
  full_name: Caballero Mancebo, Silvia
  id: 2F1E1758-F248-11E8-B48F-1D18A9856A87
  last_name: Caballero Mancebo
  orcid: 0000-0002-5223-3346
- first_name: Rushikesh
  full_name: Shinde, Rushikesh
  last_name: Shinde
- first_name: Madison
  full_name: Bolger-Munro, Madison
  id: 516F03FA-93A3-11EA-A7C5-D6BE3DDC885E
  last_name: Bolger-Munro
  orcid: 0000-0002-8176-4824
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Gregory
  full_name: Szep, Gregory
  id: 4BFB7762-F248-11E8-B48F-1D18A9856A87
  last_name: Szep
- first_name: Irene
  full_name: Steccari, Irene
  id: 2705C766-9FE2-11EA-B224-C6773DDC885E
  last_name: Steccari
- first_name: David
  full_name: Labrousse Arias, David
  id: CD573DF4-9ED3-11E9-9D77-3223E6697425
  last_name: Labrousse Arias
- first_name: Vanessa
  full_name: Zheden, Vanessa
  id: 39C5A68A-F248-11E8-B48F-1D18A9856A87
  last_name: Zheden
  orcid: 0000-0002-9438-4783
- first_name: Jack
  full_name: Merrin, Jack
  id: 4515C308-F248-11E8-B48F-1D18A9856A87
  last_name: Merrin
  orcid: 0000-0001-5145-4609
- first_name: Andrew
  full_name: Callan-Jones, Andrew
  last_name: Callan-Jones
- first_name: Raphaël
  full_name: Voituriez, Raphaël
  last_name: Voituriez
- first_name: Carl-Philipp J
  full_name: Heisenberg, Carl-Philipp J
  id: 39427864-F248-11E8-B48F-1D18A9856A87
  last_name: Heisenberg
  orcid: 0000-0002-0912-4566
citation:
  ama: Caballero Mancebo S, Shinde R, Bolger-Munro M, et al. Friction forces determine
    cytoplasmic reorganization and shape changes of ascidian oocytes upon fertilization.
    <i>Nature Physics</i>. 2024. doi:<a href="https://doi.org/10.1038/s41567-023-02302-1">10.1038/s41567-023-02302-1</a>
  apa: Caballero Mancebo, S., Shinde, R., Bolger-Munro, M., Peruzzo, M., Szep, G.,
    Steccari, I., … Heisenberg, C.-P. J. (2024). Friction forces determine cytoplasmic
    reorganization and shape changes of ascidian oocytes upon fertilization. <i>Nature
    Physics</i>. Springer Nature. <a href="https://doi.org/10.1038/s41567-023-02302-1">https://doi.org/10.1038/s41567-023-02302-1</a>
  chicago: Caballero Mancebo, Silvia, Rushikesh Shinde, Madison Bolger-Munro, Matilda
    Peruzzo, Gregory Szep, Irene Steccari, David Labrousse Arias, et al. “Friction
    Forces Determine Cytoplasmic Reorganization and Shape Changes of Ascidian Oocytes
    upon Fertilization.” <i>Nature Physics</i>. Springer Nature, 2024. <a href="https://doi.org/10.1038/s41567-023-02302-1">https://doi.org/10.1038/s41567-023-02302-1</a>.
  ieee: S. Caballero Mancebo <i>et al.</i>, “Friction forces determine cytoplasmic
    reorganization and shape changes of ascidian oocytes upon fertilization,” <i>Nature
    Physics</i>. Springer Nature, 2024.
  ista: Caballero Mancebo S, Shinde R, Bolger-Munro M, Peruzzo M, Szep G, Steccari
    I, Labrousse Arias D, Zheden V, Merrin J, Callan-Jones A, Voituriez R, Heisenberg
    C-PJ. 2024. Friction forces determine cytoplasmic reorganization and shape changes
    of ascidian oocytes upon fertilization. Nature Physics.
  mla: Caballero Mancebo, Silvia, et al. “Friction Forces Determine Cytoplasmic Reorganization
    and Shape Changes of Ascidian Oocytes upon Fertilization.” <i>Nature Physics</i>,
    Springer Nature, 2024, doi:<a href="https://doi.org/10.1038/s41567-023-02302-1">10.1038/s41567-023-02302-1</a>.
  short: S. Caballero Mancebo, R. Shinde, M. Bolger-Munro, M. Peruzzo, G. Szep, I.
    Steccari, D. Labrousse Arias, V. Zheden, J. Merrin, A. Callan-Jones, R. Voituriez,
    C.-P.J. Heisenberg, Nature Physics (2024).
date_created: 2024-01-21T23:00:57Z
date_published: 2024-01-09T00:00:00Z
date_updated: 2024-03-05T09:33:38Z
day: '09'
department:
- _id: CaHe
- _id: JoFi
- _id: MiSi
- _id: EM-Fac
- _id: NanoFab
doi: 10.1038/s41567-023-02302-1
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1038/s41567-023-02302-1
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 2646861A-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I03601
  name: Control of embryonic cleavage pattern
publication: Nature Physics
publication_identifier:
  eissn:
  - 1745-2481
  issn:
  - 1745-2473
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - description: News on ISTA Website
    relation: press_release
    url: https://ista.ac.at/en/news/stranger-than-friction-a-force-initiating-life/
scopus_import: '1'
status: public
title: Friction forces determine cytoplasmic reorganization and shape changes of ascidian
  oocytes upon fertilization
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
year: '2024'
...
---
_id: '14489'
abstract:
- lang: eng
  text: Microwave-optics entanglement is a vital component for building hybrid quantum
    networks. Here, a new mechanism for preparing stationary entanglement between
    microwave and optical cavity fields in a cavity optomagnomechanical system is
    proposed. It consists of a magnon mode in a ferrimagnetic crystal that couples
    directly to a microwave cavity mode via the magnetic dipole interaction and indirectly
    to an optical cavity through the deformation displacement of the crystal. The
    mechanical displacement is induced by the magnetostrictive force and coupled to
    the optical cavity via radiation pressure. Both the opto- and magnomechanical
    couplings are dispersive. Magnon–phonon entanglement is created via magnomechanical
    parametric down-conversion, which is further distributed to optical and microwave
    photons via simultaneous optomechanical beamsplitter interaction and electromagnonic
    state-swap interaction, yielding stationary microwave-optics entanglement. The
    microwave-optics entanglement is robust against thermal noise, which will find
    broad potential applications in quantum networks and quantum information processing
    with hybrid quantum systems.
acknowledgement: This work was supported by the National Key Research and Development
  Program of China (Grant no. 2022YFA1405200), the National Natural Science Foundation
  of China (Nos. 92265202), and the European Research Council (ERC CoG Q-ECHOS, 101001005).
article_number: '2200866'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Zhi Yuan
  full_name: Fan, Zhi Yuan
  last_name: Fan
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: Simon
  full_name: Gröblacher, Simon
  last_name: Gröblacher
- first_name: Jie
  full_name: Li, Jie
  last_name: Li
citation:
  ama: Fan ZY, Qiu L, Gröblacher S, Li J. Microwave-optics entanglement via cavity
    optomagnomechanics. <i>Laser and Photonics Reviews</i>. 2023;17(12). doi:<a href="https://doi.org/10.1002/lpor.202200866">10.1002/lpor.202200866</a>
  apa: Fan, Z. Y., Qiu, L., Gröblacher, S., &#38; Li, J. (2023). Microwave-optics
    entanglement via cavity optomagnomechanics. <i>Laser and Photonics Reviews</i>.
    Wiley. <a href="https://doi.org/10.1002/lpor.202200866">https://doi.org/10.1002/lpor.202200866</a>
  chicago: Fan, Zhi Yuan, Liu Qiu, Simon Gröblacher, and Jie Li. “Microwave-Optics
    Entanglement via Cavity Optomagnomechanics.” <i>Laser and Photonics Reviews</i>.
    Wiley, 2023. <a href="https://doi.org/10.1002/lpor.202200866">https://doi.org/10.1002/lpor.202200866</a>.
  ieee: Z. Y. Fan, L. Qiu, S. Gröblacher, and J. Li, “Microwave-optics entanglement
    via cavity optomagnomechanics,” <i>Laser and Photonics Reviews</i>, vol. 17, no.
    12. Wiley, 2023.
  ista: Fan ZY, Qiu L, Gröblacher S, Li J. 2023. Microwave-optics entanglement via
    cavity optomagnomechanics. Laser and Photonics Reviews. 17(12), 2200866.
  mla: Fan, Zhi Yuan, et al. “Microwave-Optics Entanglement via Cavity Optomagnomechanics.”
    <i>Laser and Photonics Reviews</i>, vol. 17, no. 12, 2200866, Wiley, 2023, doi:<a
    href="https://doi.org/10.1002/lpor.202200866">10.1002/lpor.202200866</a>.
  short: Z.Y. Fan, L. Qiu, S. Gröblacher, J. Li, Laser and Photonics Reviews 17 (2023).
date_created: 2023-11-05T23:00:54Z
date_published: 2023-12-01T00:00:00Z
date_updated: 2024-01-30T14:36:42Z
day: '01'
department:
- _id: JoFi
doi: 10.1002/lpor.202200866
external_id:
  arxiv:
  - '2208.10703'
intvolume: '        17'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2208.10703
month: '12'
oa: 1
oa_version: Preprint
publication: Laser and Photonics Reviews
publication_identifier:
  eissn:
  - 1863-8899
  issn:
  - 1863-8880
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Microwave-optics entanglement via cavity optomagnomechanics
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2023'
...
---
_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: '14553'
abstract:
- lang: eng
  text: Quantum state tomography is an essential component of modern quantum technology.
    In application to continuous-variable harmonic-oscillator systems, such as the
    electromagnetic field, existing tomography methods typically reconstruct the state
    in discrete bases, and are hence limited to states with relatively low amplitudes
    and energies. Here, we overcome this limitation by utilizing a feed-forward neural
    network to obtain the density matrix directly in the continuous position basis.
    An important benefit of our approach is the ability to choose specific regions
    in the phase space for detailed reconstruction. This results in a relatively slow
    scaling of the amount of resources required for the reconstruction with the state
    amplitude, and hence allows us to dramatically increase the range of amplitudes
    accessible with our method.
article_number: '042430'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Ekaterina
  full_name: Fedotova, Ekaterina
  id: c1bea5e1-878e-11ee-9dff-d7404e4422ab
  last_name: Fedotova
  orcid: 0000-0001-7242-015X
- first_name: Nikolai
  full_name: Kuznetsov, Nikolai
  last_name: Kuznetsov
- first_name: Egor
  full_name: Tiunov, Egor
  last_name: Tiunov
- first_name: A. E.
  full_name: Ulanov, A. E.
  last_name: Ulanov
- first_name: A. I.
  full_name: Lvovsky, A. I.
  last_name: Lvovsky
citation:
  ama: Fedotova E, Kuznetsov N, Tiunov E, Ulanov AE, Lvovsky AI. Continuous-variable
    quantum tomography of high-amplitude states. <i>Physical Review A</i>. 2023;108(4).
    doi:<a href="https://doi.org/10.1103/PhysRevA.108.042430">10.1103/PhysRevA.108.042430</a>
  apa: Fedotova, E., Kuznetsov, N., Tiunov, E., Ulanov, A. E., &#38; Lvovsky, A. I.
    (2023). Continuous-variable quantum tomography of high-amplitude states. <i>Physical
    Review A</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevA.108.042430">https://doi.org/10.1103/PhysRevA.108.042430</a>
  chicago: Fedotova, Ekaterina, Nikolai Kuznetsov, Egor Tiunov, A. E. Ulanov, and
    A. I. Lvovsky. “Continuous-Variable Quantum Tomography of High-Amplitude States.”
    <i>Physical Review A</i>. American Physical Society, 2023. <a href="https://doi.org/10.1103/PhysRevA.108.042430">https://doi.org/10.1103/PhysRevA.108.042430</a>.
  ieee: E. Fedotova, N. Kuznetsov, E. Tiunov, A. E. Ulanov, and A. I. Lvovsky, “Continuous-variable
    quantum tomography of high-amplitude states,” <i>Physical Review A</i>, vol. 108,
    no. 4. American Physical Society, 2023.
  ista: Fedotova E, Kuznetsov N, Tiunov E, Ulanov AE, Lvovsky AI. 2023. Continuous-variable
    quantum tomography of high-amplitude states. Physical Review A. 108(4), 042430.
  mla: Fedotova, Ekaterina, et al. “Continuous-Variable Quantum Tomography of High-Amplitude
    States.” <i>Physical Review A</i>, vol. 108, no. 4, 042430, American Physical
    Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevA.108.042430">10.1103/PhysRevA.108.042430</a>.
  short: E. Fedotova, N. Kuznetsov, E. Tiunov, A.E. Ulanov, A.I. Lvovsky, Physical
    Review A 108 (2023).
date_created: 2023-11-19T23:00:54Z
date_published: 2023-10-30T00:00:00Z
date_updated: 2023-11-20T10:26:51Z
day: '30'
department:
- _id: JoFi
doi: 10.1103/PhysRevA.108.042430
external_id:
  arxiv:
  - '2212.07406'
intvolume: '       108'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2212.07406
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Continuous-variable quantum tomography of high-amplitude states
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...
---
_id: '14872'
abstract:
- lang: eng
  text: We entangled microwave and optical photons for the first time as verified
    by a measured two-mode vacuum squeezing of 0.7 dB. This electro-optic entanglement
    is the key resource needed to connect cryogenic quantum circuits.
article_number: LM1F.3
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: Liu
  full_name: Qiu, Liu
  last_name: Qiu
- first_name: William J
  full_name: Hease, William J
  id: 29705398-F248-11E8-B48F-1D18A9856A87
  last_name: Hease
  orcid: 0000-0001-9868-2166
- first_name: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
- first_name: Yuri
  full_name: Minoguchi, Yuri
  last_name: Minoguchi
- first_name: Peter
  full_name: Rabl, Peter
  last_name: Rabl
- 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: 'Sahu R, Qiu L, Hease WJ, et al. Entangling microwaves and telecom wavelength
    light. In: <i>Frontiers in Optics + Laser Science 2023</i>. Optica Publishing
    Group; 2023. doi:<a href="https://doi.org/10.1364/ls.2023.lm1f.3">10.1364/ls.2023.lm1f.3</a>'
  apa: 'Sahu, R., Qiu, L., Hease, W. J., Arnold, G. M., Minoguchi, Y., Rabl, P., &#38;
    Fink, J. M. (2023). Entangling microwaves and telecom wavelength light. In <i>Frontiers
    in Optics + Laser Science 2023</i>. Tacoma, WA, United States: Optica Publishing
    Group. <a href="https://doi.org/10.1364/ls.2023.lm1f.3">https://doi.org/10.1364/ls.2023.lm1f.3</a>'
  chicago: Sahu, Rishabh, Liu Qiu, William J Hease, Georg M Arnold, Yuri Minoguchi,
    Peter Rabl, and Johannes M Fink. “Entangling Microwaves and Telecom Wavelength
    Light.” In <i>Frontiers in Optics + Laser Science 2023</i>. Optica Publishing
    Group, 2023. <a href="https://doi.org/10.1364/ls.2023.lm1f.3">https://doi.org/10.1364/ls.2023.lm1f.3</a>.
  ieee: R. Sahu <i>et al.</i>, “Entangling microwaves and telecom wavelength light,”
    in <i>Frontiers in Optics + Laser Science 2023</i>, Tacoma, WA, United States,
    2023.
  ista: Sahu R, Qiu L, Hease WJ, Arnold GM, Minoguchi Y, Rabl P, Fink JM. 2023. Entangling
    microwaves and telecom wavelength light. Frontiers in Optics + Laser Science 2023.
    Laser Science, LM1F.3.
  mla: Sahu, Rishabh, et al. “Entangling Microwaves and Telecom Wavelength Light.”
    <i>Frontiers in Optics + Laser Science 2023</i>, LM1F.3, Optica Publishing Group,
    2023, doi:<a href="https://doi.org/10.1364/ls.2023.lm1f.3">10.1364/ls.2023.lm1f.3</a>.
  short: R. Sahu, L. Qiu, W.J. Hease, G.M. Arnold, Y. Minoguchi, P. Rabl, J.M. Fink,
    in:, Frontiers in Optics + Laser Science 2023, Optica Publishing Group, 2023.
conference:
  end_date: 2023-10-12
  location: Tacoma, WA, United States
  name: Laser Science
  start_date: 2023-10-09
date_created: 2024-01-22T12:29:41Z
date_published: 2023-10-01T00:00:00Z
date_updated: 2024-01-24T08:43:28Z
day: '01'
department:
- _id: JoFi
doi: 10.1364/ls.2023.lm1f.3
language:
- iso: eng
month: '10'
oa_version: None
publication: Frontiers in Optics + Laser Science 2023
publication_identifier:
  isbn:
  - '9781957171296'
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
status: public
title: Entangling microwaves and telecom wavelength light
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '13106'
abstract:
- lang: eng
  text: Quantum entanglement is a key resource in currently developed quantum technologies.
    Sharing this fragile property between superconducting microwave circuits and optical
    or atomic systems would enable new functionalities, but this has been hindered
    by an energy scale mismatch of >104 and the resulting mutually imposed loss and
    noise. In this work, we created and verified entanglement between microwave and
    optical fields in a millikelvin environment. Using an optically pulsed superconducting
    electro-optical device, we show entanglement between propagating microwave and
    optical fields in the continuous variable domain. This achievement not only paves
    the way for entanglement between superconducting circuits and telecom wavelength
    light, but also has wide-ranging implications for hybrid quantum networks in the
    context of modularization, scaling, sensing, and cross-platform verification.
acknowledgement: This work was supported by the European Research Council (grant no.
  758053, ERC StG QUNNECT) and the European Union’s Horizon 2020 Research and Innovation
  Program (grant no. 899354, FETopen SuperQuLAN). L.Q. acknowledges generous support
  from the ISTFELLOW program. W.H. is the recipient of an ISTplus postdoctoral fellowship
  with funding from the European Union’s Horizon 2020 Research and Innovation Program
  (Marie Sklodowska-Curie grant no. 754411). G.A. is the recipient of a DOC fellowship
  of the Austrian Academy of Sciences at IST Austria. J.M.F. acknowledges support
  from the Austrian Science Fund (FWF) through BeyondC (grant no. F7105) and the European
  Union’s Horizon 2020 Research and Innovation Program (grant no. 862644, FETopen
  QUARTET).
article_processing_charge: No
arxiv: 1
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: William J
  full_name: Hease, William J
  id: 29705398-F248-11E8-B48F-1D18A9856A87
  last_name: Hease
  orcid: 0000-0001-9868-2166
- first_name: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
- first_name: Y.
  full_name: Minoguchi, Y.
  last_name: Minoguchi
- first_name: P.
  full_name: Rabl, P.
  last_name: Rabl
- 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: Sahu R, Qiu L, Hease WJ, et al. Entangling microwaves with light. 2023;380:718-721.
    doi:<a href="https://doi.org/10.1126/science.adg3812">10.1126/science.adg3812</a>
  apa: Sahu, R., Qiu, L., Hease, W. J., Arnold, G. M., Minoguchi, Y., Rabl, P., &#38;
    Fink, J. M. (2023). <i>Entangling microwaves with light</i>. American Association
    for the Advancement of Science. <a href="https://doi.org/10.1126/science.adg3812">https://doi.org/10.1126/science.adg3812</a>
  chicago: Sahu, Rishabh, Liu Qiu, William J Hease, Georg M Arnold, Y. Minoguchi,
    P. Rabl, and Johannes M Fink. “Entangling Microwaves with Light.” American Association
    for the Advancement of Science, 2023. <a href="https://doi.org/10.1126/science.adg3812">https://doi.org/10.1126/science.adg3812</a>.
  ieee: R. Sahu <i>et al.</i>, “Entangling microwaves with light,” American Association
    for the Advancement of Science, 2023.
  ista: Sahu R, Qiu L, Hease WJ, Arnold GM, Minoguchi Y, Rabl P, Fink JM. 2023. Entangling
    microwaves with light. American Association for the Advancement of Science.
  mla: Sahu, Rishabh, et al. <i>Entangling Microwaves with Light</i>. Vol. 380, American
    Association for the Advancement of Science, 2023, pp. 718–21, doi:<a href="https://doi.org/10.1126/science.adg3812">10.1126/science.adg3812</a>.
  short: R. Sahu, L. Qiu, W.J. Hease, G.M. Arnold, Y. Minoguchi, P. Rabl, J.M. Fink,
    Entangling Microwaves with Light, American Association for the Advancement of
    Science, 2023.
date_created: 2023-05-31T11:39:24Z
date_published: 2023-05-18T00:00:00Z
date_updated: 2025-07-15T09:17:40Z
day: '18'
degree_awarded: PhD
department:
- _id: JoFi
doi: 10.1126/science.adg3812
ec_funded: 1
external_id:
  arxiv:
  - '2301.03315'
  isi:
  - '000996515200004'
intvolume: '       380'
isi: 1
keyword:
- Multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2301.03315
month: '05'
oa: 1
oa_version: Preprint
page: 718-721
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _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_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
related_material:
  link:
  - description: News on ISTA Website
    relation: press_release
    url: https://ista.ac.at/en/news/wiring-up-quantum-circuits-with-light/
  record:
  - id: '13122'
    relation: research_data
    status: public
status: public
title: Entangling microwaves with light
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 380
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: '13122'
abstract:
- lang: eng
  text: Data for submitted article "Entangling microwaves with light" at arXiv:2301.03315v1
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Entangling microwaves with light. 2023. doi:<a href="https://doi.org/10.5281/ZENODO.7789417">10.5281/ZENODO.7789417</a>
  apa: Sahu, R. (2023). Entangling microwaves with light. Zenodo. <a href="https://doi.org/10.5281/ZENODO.7789417">https://doi.org/10.5281/ZENODO.7789417</a>
  chicago: Sahu, Rishabh. “Entangling Microwaves with Light.” Zenodo, 2023. <a href="https://doi.org/10.5281/ZENODO.7789417">https://doi.org/10.5281/ZENODO.7789417</a>.
  ieee: R. Sahu, “Entangling microwaves with light.” Zenodo, 2023.
  ista: Sahu R. 2023. Entangling microwaves with light, Zenodo, <a href="https://doi.org/10.5281/ZENODO.7789417">10.5281/ZENODO.7789417</a>.
  mla: Sahu, Rishabh. <i>Entangling Microwaves with Light</i>. Zenodo, 2023, doi:<a
    href="https://doi.org/10.5281/ZENODO.7789417">10.5281/ZENODO.7789417</a>.
  short: R. Sahu, (2023).
date_created: 2023-06-06T06:46:16Z
date_published: 2023-03-31T00:00:00Z
date_updated: 2025-07-15T09:17:40Z
day: '31'
department:
- _id: JoFi
doi: 10.5281/ZENODO.7789417
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/zenodo.7789418
month: '03'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
  record:
  - id: '13106'
    relation: used_in_publication
    status: public
status: public
title: Entangling microwaves with light
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: '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:
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month: '04'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
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  - id: '13117'
    relation: used_in_publication
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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: '13175'
abstract:
- lang: eng
  text: "About a 100 years ago, we discovered that our universe is inherently noisy,
    that is, measuring any physical quantity with a precision beyond a certain point
    is not possible because of an omnipresent inherent noise. We call this - the quantum
    noise. Certain physical processes allow this quantum noise to get correlated in
    conjugate physical variables. These quantum correlations can be used to go beyond
    the potential of our inherently noisy universe and obtain a quantum advantage
    over the classical applications. \r\n\r\nQuantum noise being inherent also means
    that, at the fundamental level, the physical quantities are not well defined and
    therefore, objects can stay in multiple states at the same time. For example,
    the position of a particle not being well defined means that the particle is in
    multiple positions at the same time. About 4 decades ago, we started exploring
    the possibility of using objects which can be in multiple states at the same time
    to increase the dimensionality in computation. Thus, the field of quantum computing
    was born. We discovered that using quantum entanglement, a property closely related
    to quantum correlations, can be used to speed up computation of certain problems,
    such as factorisation of large numbers, faster than any known classical algorithm.
    Thus began the pursuit to make quantum computers a reality. \r\n\r\nTill date,
    we have explored quantum control over many physical systems including photons,
    spins, atoms, ions and even simple circuits made up of superconducting material.
    However, there persists one ubiquitous theme. The more readily a system interacts
    with an external field or matter, the more easily we can control it. But this
    also means that such a system can easily interact with a noisy environment and
    quickly lose its coherence. Consequently, such systems like electron spins need
    to be protected from the environment to ensure the longevity of their coherence.
    Other systems like nuclear spins are naturally protected as they do not interact
    easily with the environment. But, due to the same reason, it is harder to interact
    with such systems. \r\n\r\nAfter decades of experimentation with various systems,
    we are convinced that no one type of quantum system would be the best for all
    the quantum applications. We would need hybrid systems which are all interconnected
    - much like the current internet where all sorts of devices can all talk to each
    other - but now for quantum devices. A quantum internet. \r\n\r\nOptical photons
    are the best contenders to carry information for the quantum internet. They can
    carry quantum information cheaply and without much loss - the same reasons which
    has made them the backbone of our current internet. Following this direction,
    many systems, like trapped ions, have already demonstrated successful quantum
    links over a large distances using optical photons. However, some of the most
    promising contenders for quantum computing which are based on microwave frequencies
    have been left behind. This is because high energy optical photons can adversely
    affect fragile low-energy microwave systems. \r\n\r\nIn this thesis, we present
    substantial progress on this missing quantum link between microwave and optics
    using electrooptical nonlinearities in lithium niobate. The nonlinearities are
    enhanced by using resonant cavities for all the involved modes leading to observation
    of strong direct coupling between optical and microwave frequencies. With this
    strong coupling we are not only able to achieve almost 100\\% internal conversion
    efficiency with low added noise, thus presenting a quantum-enabled transducer,
    but also we are able to observe novel effects such as cooling of a microwave mode
    using optics. The strong coupling regime also leads to direct observation of dynamical
    backaction effect between microwave and optical frequencies which are studied
    in detail here. Finally, we also report first observation of microwave-optics
    entanglement in form of two-mode squeezed vacuum squeezed 0.7dB below vacuum level.
    \r\nWith this new bridge between microwave and optics, the microwave-based quantum
    technologies can finally be a part of a quantum network which is based on optical
    photons - putting us one step closer to a future with quantum internet. "
acknowledged_ssus:
- _id: M-Shop
- _id: SSU
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Cavity quantum electrooptics. 2023. doi:<a href="https://doi.org/10.15479/at:ista:13175">10.15479/at:ista:13175</a>
  apa: Sahu, R. (2023). <i>Cavity quantum electrooptics</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:13175">https://doi.org/10.15479/at:ista:13175</a>
  chicago: Sahu, Rishabh. “Cavity Quantum Electrooptics.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:13175">https://doi.org/10.15479/at:ista:13175</a>.
  ieee: R. Sahu, “Cavity quantum electrooptics,” Institute of Science and Technology
    Austria, 2023.
  ista: Sahu R. 2023. Cavity quantum electrooptics. Institute of Science and Technology
    Austria.
  mla: Sahu, Rishabh. <i>Cavity Quantum Electrooptics</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:13175">10.15479/at:ista:13175</a>.
  short: R. Sahu, Cavity Quantum Electrooptics, Institute of Science and Technology
    Austria, 2023.
date_created: 2023-06-30T08:07:43Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2024-10-29T09:11:06Z
day: '05'
ddc:
- '537'
- '535'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:13175
ec_funded: 1
file:
- access_level: open_access
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  creator: cchlebak
  date_created: 2023-06-30T08:17:25Z
  date_updated: 2023-06-30T08:17:25Z
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  file_id: '13196'
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  file_size: 37847025
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has_accepted_license: '1'
keyword:
- quantum optics
- electrooptics
- quantum networks
- quantum communication
- transduction
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '202'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  isbn:
  - 978-3-99078-030-5
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '12900'
    relation: old_edition
    status: public
  - id: '9114'
    relation: part_of_dissertation
    status: public
  - id: '10924'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: Cavity quantum electrooptics
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '13200'
abstract:
- lang: eng
  text: Recent quantum technologies have established precise quantum control of various
    microscopic systems using electromagnetic waves. Interfaces based on cryogenic
    cavity electro-optic systems are particularly promising, due to the direct interaction
    between microwave and optical fields in the quantum regime. Quantum optical control
    of superconducting microwave circuits has been precluded so far due to the weak
    electro-optical coupling as well as quasi-particles induced by the pump laser.
    Here we report the coherent control of a superconducting microwave cavity using
    laser pulses in a multimode electro-optical device at millikelvin temperature
    with near-unity cooperativity. Both the stationary and instantaneous responses
    of the microwave and optical modes comply with the coherent electro-optical interaction,
    and reveal only minuscule amount of excess back-action with an unanticipated time
    delay. Our demonstration enables wide ranges of applications beyond quantum transductions,
    from squeezing and quantum non-demolition measurements of microwave fields, to
    entanglement generation and hybrid quantum networks.
acknowledgement: This work was supported by the European Research Council under grant
  agreement no. 758053 (ERC StG QUNNECT), the European Union’s Horizon 2020 research
  and innovation program under grant agreement no. 899354 (FETopen SuperQuLAN), and
  the Austrian Science Fund (FWF) through BeyondC (F7105). L.Q. acknowledges generous
  support from the ISTFELLOW programme. W.H. is the recipient of an ISTplus postdoctoral
  fellowship with funding from the European Union’s Horizon 2020 research and innovation
  program under the Marie Skłodowska-Curie grant agreement no. 754411. G.A. is the
  recipient of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.
article_number: '3784'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: William J
  full_name: Hease, William J
  id: 29705398-F248-11E8-B48F-1D18A9856A87
  last_name: Hease
  orcid: 0000-0001-9868-2166
- first_name: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
citation:
  ama: Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. Coherent optical control of a
    superconducting microwave cavity via electro-optical dynamical back-action. <i>Nature
    Communications</i>. 2023;14. doi:<a href="https://doi.org/10.1038/s41467-023-39493-3">10.1038/s41467-023-39493-3</a>
  apa: Qiu, L., Sahu, R., Hease, W. J., Arnold, G. M., &#38; Fink, J. M. (2023). Coherent
    optical control of a superconducting microwave cavity via electro-optical dynamical
    back-action. <i>Nature Communications</i>. Nature Research. <a href="https://doi.org/10.1038/s41467-023-39493-3">https://doi.org/10.1038/s41467-023-39493-3</a>
  chicago: Qiu, Liu, Rishabh Sahu, William J Hease, Georg M Arnold, and Johannes M
    Fink. “Coherent Optical Control of a Superconducting Microwave Cavity via Electro-Optical
    Dynamical Back-Action.” <i>Nature Communications</i>. Nature Research, 2023. <a
    href="https://doi.org/10.1038/s41467-023-39493-3">https://doi.org/10.1038/s41467-023-39493-3</a>.
  ieee: L. Qiu, R. Sahu, W. J. Hease, G. M. Arnold, and J. M. Fink, “Coherent optical
    control of a superconducting microwave cavity via electro-optical dynamical back-action,”
    <i>Nature Communications</i>, vol. 14. Nature Research, 2023.
  ista: Qiu L, Sahu R, Hease WJ, Arnold GM, Fink JM. 2023. Coherent optical control
    of a superconducting microwave cavity via electro-optical dynamical back-action.
    Nature Communications. 14, 3784.
  mla: Qiu, Liu, et al. “Coherent Optical Control of a Superconducting Microwave Cavity
    via Electro-Optical Dynamical Back-Action.” <i>Nature Communications</i>, vol.
    14, 3784, Nature Research, 2023, doi:<a href="https://doi.org/10.1038/s41467-023-39493-3">10.1038/s41467-023-39493-3</a>.
  short: L. Qiu, R. Sahu, W.J. Hease, G.M. Arnold, J.M. Fink, Nature Communications
    14 (2023).
date_created: 2023-07-09T22:01:11Z
date_published: 2023-06-24T00:00:00Z
date_updated: 2024-08-07T07:11:55Z
day: '24'
ddc:
- '000'
department:
- _id: JoFi
doi: 10.1038/s41467-023-39493-3
ec_funded: 1
external_id:
  arxiv:
  - '2210.12443'
  isi:
  - '001018100800002'
  pmid:
  - '37355691'
file:
- access_level: open_access
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  creator: alisjak
  date_created: 2023-07-10T10:10:54Z
  date_updated: 2023-07-10T10:10:54Z
  file_id: '13206'
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  file_size: 1349134
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  success: 1
file_date_updated: 2023-07-10T10:10:54Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
  name: Coherent on-chip conversion of superconducting qubit signals from microwaves
    to optical frequencies
publication: Nature Communications
publication_identifier:
  eissn:
  - 2041-1723
publication_status: published
publisher: Nature Research
quality_controlled: '1'
scopus_import: '1'
status: public
title: Coherent optical control of a superconducting microwave cavity via electro-optical
  dynamical back-action
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2023'
...
---
_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
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  date_created: 2024-01-29T11:25:38Z
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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: '12819'
abstract:
- lang: eng
  text: 'Reaching a high cavity population with a coherent pump in the strong-coupling
    regime of a single-atom laser is impossible due to the photon blockade effect.
    In this Letter, we experimentally demonstrate that in a single-atom maser based
    on a transmon strongly coupled to two resonators, it is possible to pump over
    a dozen photons into the system. The first high-quality resonator plays the role
    of a usual lasing cavity, and the second one presents a controlled dissipation
    channel, bolstering population inversion, and modifies the energy-level structure
    to lift the blockade. As confirmation of the lasing action, we observe conventional
    laser features such as a narrowing of the emission linewidth and external signal
    amplification. Additionally, we report unique single-atom features: self-quenching
    and several lasing thresholds.'
acknowledgement: We thank N.N. Abramov for assistance with the experimental setup.
  The sample was fabricated using equipment of MIPT Shared Facilities Center. This
  research was supported by Russian Science Foundation, grant no. 21-72-30026.
article_number: L031701
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Alesya
  full_name: Sokolova, Alesya
  id: 2d0a0600-edfb-11eb-afb5-c0f5fa7f4f3a
  last_name: Sokolova
  orcid: 0000-0002-8308-4144
- first_name: D. A.
  full_name: Kalacheva, D. A.
  last_name: Kalacheva
- first_name: G. P.
  full_name: Fedorov, G. P.
  last_name: Fedorov
- first_name: O. V.
  full_name: Astafiev, O. V.
  last_name: Astafiev
citation:
  ama: Sokolova A, Kalacheva DA, Fedorov GP, Astafiev OV. Overcoming photon blockade
    in a circuit-QED single-atom maser with engineered metastability and strong coupling.
    <i>Physical Review A</i>. 2023;107(3). doi:<a href="https://doi.org/10.1103/PhysRevA.107.L031701">10.1103/PhysRevA.107.L031701</a>
  apa: Sokolova, A., Kalacheva, D. A., Fedorov, G. P., &#38; Astafiev, O. V. (2023).
    Overcoming photon blockade in a circuit-QED single-atom maser with engineered
    metastability and strong coupling. <i>Physical Review A</i>. American Physical
    Society. <a href="https://doi.org/10.1103/PhysRevA.107.L031701">https://doi.org/10.1103/PhysRevA.107.L031701</a>
  chicago: Sokolova, Alesya, D. A. Kalacheva, G. P. Fedorov, and O. V. Astafiev. “Overcoming
    Photon Blockade in a Circuit-QED Single-Atom Maser with Engineered Metastability
    and Strong Coupling.” <i>Physical Review A</i>. American Physical Society, 2023.
    <a href="https://doi.org/10.1103/PhysRevA.107.L031701">https://doi.org/10.1103/PhysRevA.107.L031701</a>.
  ieee: A. Sokolova, D. A. Kalacheva, G. P. Fedorov, and O. V. Astafiev, “Overcoming
    photon blockade in a circuit-QED single-atom maser with engineered metastability
    and strong coupling,” <i>Physical Review A</i>, vol. 107, no. 3. American Physical
    Society, 2023.
  ista: Sokolova A, Kalacheva DA, Fedorov GP, Astafiev OV. 2023. Overcoming photon
    blockade in a circuit-QED single-atom maser with engineered metastability and
    strong coupling. Physical Review A. 107(3), L031701.
  mla: Sokolova, Alesya, et al. “Overcoming Photon Blockade in a Circuit-QED Single-Atom
    Maser with Engineered Metastability and Strong Coupling.” <i>Physical Review A</i>,
    vol. 107, no. 3, L031701, American Physical Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevA.107.L031701">10.1103/PhysRevA.107.L031701</a>.
  short: A. Sokolova, D.A. Kalacheva, G.P. Fedorov, O.V. Astafiev, Physical Review
    A 107 (2023).
date_created: 2023-04-09T22:01:00Z
date_published: 2023-03-22T00:00:00Z
date_updated: 2023-08-01T14:06:05Z
day: '22'
department:
- _id: JoFi
doi: 10.1103/PhysRevA.107.L031701
external_id:
  arxiv:
  - '2209.05165'
  isi:
  - '000957799000006'
intvolume: '       107'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2209.05165
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Overcoming photon blockade in a circuit-QED single-atom maser with engineered
  metastability and strong coupling
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '12900'
abstract:
- lang: eng
  text: "About a 100 years ago, we discovered that our universe is inherently noisy,
    that is, measuring any physical quantity with a precision beyond a certain point
    is not possible because of an omnipresent inherent noise. We call this - the quantum
    noise. Certain physical processes allow this quantum noise to get correlated in
    conjugate physical variables. These quantum correlations can be used to go beyond
    the potential of our inherently noisy universe and obtain a quantum advantage
    over the classical applications. \r\n\r\nQuantum noise being inherent also means
    that, at the fundamental level, the physical quantities are not well defined and
    therefore, objects can stay in multiple states at the same time. For example,
    the position of a particle not being well defined means that the particle is in
    multiple positions at the same time. About 4 decades ago, we started exploring
    the possibility of using objects which can be in multiple states at the same time
    to increase the dimensionality in computation. Thus, the field of quantum computing
    was born. We discovered that using quantum entanglement, a property closely related
    to quantum correlations, can be used to speed up computation of certain problems,
    such as factorisation of large numbers, faster than any known classical algorithm.
    Thus began the pursuit to make quantum computers a reality. \r\n\r\nTill date,
    we have explored quantum control over many physical systems including photons,
    spins, atoms, ions and even simple circuits made up of superconducting material.
    However, there persists one ubiquitous theme. The more readily a system interacts
    with an external field or matter, the more easily we can control it. But this
    also means that such a system can easily interact with a noisy environment and
    quickly lose its coherence. Consequently, such systems like electron spins need
    to be protected from the environment to ensure the longevity of their coherence.
    Other systems like nuclear spins are naturally protected as they do not interact
    easily with the environment. But, due to the same reason, it is harder to interact
    with such systems. \r\n\r\nAfter decades of experimentation with various systems,
    we are convinced that no one type of quantum system would be the best for all
    the quantum applications. We would need hybrid systems which are all interconnected
    - much like the current internet where all sorts of devices can all talk to each
    other - but now for quantum devices. A quantum internet. \r\n\r\nOptical photons
    are the best contenders to carry information for the quantum internet. They can
    carry quantum information cheaply and without much loss - the same reasons which
    has made them the backbone of our current internet. Following this direction,
    many systems, like trapped ions, have already demonstrated successful quantum
    links over a large distances using optical photons. However, some of the most
    promising contenders for quantum computing which are based on microwave frequencies
    have been left behind. This is because high energy optical photons can adversely
    affect fragile low-energy microwave systems. \r\n\r\nIn this thesis, we present
    substantial progress on this missing quantum link between microwave and optics
    using electrooptical nonlinearities in lithium niobate. The nonlinearities are
    enhanced by using resonant cavities for all the involved modes leading to observation
    of strong direct coupling between optical and microwave frequencies. With this
    strong coupling we are not only able to achieve almost 100\\% internal conversion
    efficiency with low added noise, thus presenting a quantum-enabled transducer,
    but also we are able to observe novel effects such as cooling of a microwave mode
    using optics. The strong coupling regime also leads to direct observation of dynamical
    backaction effect between microwave and optical frequencies which are studied
    in detail here. Finally, we also report first observation of microwave-optics
    entanglement in form of two-mode squeezed vacuum squeezed 0.7dB below vacuum level.
    \r\nWith this new bridge between microwave and optics, the microwave-based quantum
    technologies can finally be a part of a quantum network which is based on optical
    photons - putting us one step closer to a future with quantum internet. "
acknowledged_ssus:
- _id: M-Shop
- _id: SSU
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Cavity quantum electrooptics. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12900">10.15479/at:ista:12900</a>
  apa: Sahu, R. (2023). <i>Cavity quantum electrooptics</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:12900">https://doi.org/10.15479/at:ista:12900</a>
  chicago: Sahu, Rishabh. “Cavity Quantum Electrooptics.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:12900">https://doi.org/10.15479/at:ista:12900</a>.
  ieee: R. Sahu, “Cavity quantum electrooptics,” Institute of Science and Technology
    Austria, 2023.
  ista: Sahu R. 2023. Cavity quantum electrooptics. Institute of Science and Technology
    Austria.
  mla: Sahu, Rishabh. <i>Cavity Quantum Electrooptics</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:12900">10.15479/at:ista:12900</a>.
  short: R. Sahu, Cavity Quantum Electrooptics, Institute of Science and Technology
    Austria, 2023.
date_created: 2023-05-05T11:08:50Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2024-10-29T09:11:05Z
day: '05'
ddc:
- '537'
- '535'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:12900
ec_funded: 1
file:
- access_level: closed
  checksum: 8cbdab9c37ee55e591092a6f66b272c4
  content_type: application/x-zip-compressed
  creator: rsahu
  date_created: 2023-05-09T08:45:14Z
  date_updated: 2023-06-06T22:30:03Z
  embargo_to: open_access
  file_id: '12928'
  file_name: thesis.zip
  file_size: 36767177
  relation: source_file
- access_level: closed
  checksum: 439659ead46618147309be39d9dd5a8c
  content_type: application/pdf
  creator: rsahu
  date_created: 2023-05-09T08:51:17Z
  date_updated: 2023-07-06T11:37:40Z
  file_id: '12929'
  file_name: thesis_pdfa_final.pdf
  file_size: 17501990
  relation: main_file
file_date_updated: 2023-07-06T11:37:40Z
has_accepted_license: '1'
keyword:
- quantum optics
- electrooptics
- quantum networks
- quantum communication
- transduction
language:
- iso: eng
month: '05'
oa_version: Published Version
page: '190'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  isbn:
  - 978-3-99078-030-5
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9114'
    relation: part_of_dissertation
    status: public
  - id: '10924'
    relation: part_of_dissertation
    status: public
  - id: '13175'
    relation: new_edition
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: Cavity quantum electrooptics
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '10924'
abstract:
- lang: eng
  text: Solid-state microwave systems offer strong interactions for fast quantum logic
    and sensing but photons at telecom wavelength are the ideal choice for high-density
    low-loss quantum interconnects. A general-purpose interface that can make use
    of single photon effects requires < 1 input noise quanta, which has remained elusive
    due to either low efficiency or pump induced heating. Here we demonstrate coherent
    electro-optic modulation on nanosecond-timescales with only 0.16+0.02−0.01 microwave
    input noise photons with a total bidirectional transduction efficiency of 8.7%
    (or up to 15% with 0.41+0.02−0.02), as required for near-term heralded quantum
    network protocols. The use of short and high-power optical pump pulses also enables
    near-unity cooperativity of the electro-optic interaction leading to an internal
    pure conversion efficiency of up to 99.5%. Together with the low mode occupancy
    this provides evidence for electro-optic laser cooling and vacuum amplification
    as predicted a decade ago.
acknowledged_ssus:
- _id: M-Shop
acknowledgement: "The authors thank S. Wald and F. Diorico for their help with optical
  filtering, O. Hosten\r\nand M. Aspelmeyer for equipment, H.G.L. Schwefel for materials
  and discussions, L.\r\nDrmic and P. Zielinski for software support, and the MIBA
  workshop at IST Austria for\r\nmachining the microwave cavity. This work was supported
  by the European Research\r\nCouncil under grant agreement no. 758053 (ERC StG QUNNECT)
  and the European\r\nUnion’s Horizon 2020 research and innovation program under grant
  agreement no.\r\n899354 (FETopen SuperQuLAN). W.H. is the recipient of an ISTplus
  postdoctoral fellowship\r\nwith funding from the European Union’s Horizon 2020 research
  and innovation\r\nprogram under the Marie Skłodowska-Curie grant agreement no. 754411.
  G.A. is the\r\nrecipient of a DOC fellowship of the Austrian Academy of Sciences
  at IST Austria. J.M.F.\r\nacknowledges support from the Austrian Science Fund (FWF)
  through BeyondC (F7105)\r\nand the European Union’s Horizon 2020 research and innovation
  programs under grant\r\nagreement no. 862644 (FETopen QUARTET)."
article_number: '1276'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: William J
  full_name: Hease, William J
  id: 29705398-F248-11E8-B48F-1D18A9856A87
  last_name: Hease
  orcid: 0000-0001-9868-2166
- first_name: 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: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
citation:
  ama: Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. Quantum-enabled
    operation of a microwave-optical interface. <i>Nature Communications</i>. 2022;13.
    doi:<a href="https://doi.org/10.1038/s41467-022-28924-2">10.1038/s41467-022-28924-2</a>
  apa: Sahu, R., Hease, W. J., Rueda Sanchez, A. R., Arnold, G. M., Qiu, L., &#38;
    Fink, J. M. (2022). Quantum-enabled operation of a microwave-optical interface.
    <i>Nature Communications</i>. Springer Nature. <a href="https://doi.org/10.1038/s41467-022-28924-2">https://doi.org/10.1038/s41467-022-28924-2</a>
  chicago: Sahu, Rishabh, William J Hease, Alfredo R Rueda Sanchez, Georg M Arnold,
    Liu Qiu, and Johannes M Fink. “Quantum-Enabled Operation of a Microwave-Optical
    Interface.” <i>Nature Communications</i>. Springer Nature, 2022. <a href="https://doi.org/10.1038/s41467-022-28924-2">https://doi.org/10.1038/s41467-022-28924-2</a>.
  ieee: R. Sahu, W. J. Hease, A. R. Rueda Sanchez, G. M. Arnold, L. Qiu, and J. M.
    Fink, “Quantum-enabled operation of a microwave-optical interface,” <i>Nature
    Communications</i>, vol. 13. Springer Nature, 2022.
  ista: Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. 2022. Quantum-enabled
    operation of a microwave-optical interface. Nature Communications. 13, 1276.
  mla: Sahu, Rishabh, et al. “Quantum-Enabled Operation of a Microwave-Optical Interface.”
    <i>Nature Communications</i>, vol. 13, 1276, Springer Nature, 2022, doi:<a href="https://doi.org/10.1038/s41467-022-28924-2">10.1038/s41467-022-28924-2</a>.
  short: R. Sahu, W.J. Hease, A.R. Rueda Sanchez, G.M. Arnold, L. Qiu, J.M. Fink,
    Nature Communications 13 (2022).
date_created: 2022-03-27T22:01:45Z
date_published: 2022-03-11T00:00:00Z
date_updated: 2024-10-29T09:11:06Z
day: '11'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-022-28924-2
ec_funded: 1
external_id:
  arxiv:
  - '2107.08303'
  isi:
  - '000767892300013'
file:
- access_level: open_access
  checksum: 7c5176db7b8e2ed18a4e0c5aca70a72c
  content_type: application/pdf
  creator: dernst
  date_created: 2022-03-28T08:02:12Z
  date_updated: 2022-03-28T08:02:12Z
  file_id: '10929'
  file_name: 2022_NatureCommunications_Sahu.pdf
  file_size: 1167492
  relation: main_file
  success: 1
file_date_updated: 2022-03-28T08:02:12Z
has_accepted_license: '1'
intvolume: '        13'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _id: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
  call_identifier: H2020
  grant_number: '862644'
  name: Quantum readout techniques and technologies
publication: Nature Communications
publication_identifier:
  eissn:
  - '20411723'
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '12900'
    relation: dissertation_contains
    status: public
  - id: '13175'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Quantum-enabled operation of a microwave-optical 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: 13
year: '2022'
...
---
_id: '10940'
abstract:
- lang: eng
  text: 'Magnetic-field-resilient superconducting circuits enable sensing applications
    and hybrid quantum computing architectures involving spin or topological qubits
    and electromechanical elements, as well as studying flux noise and quasiparticle
    loss. We investigate the effect of in-plane magnetic fields up to 1 T on the spectrum
    and coherence times of thin-film three-dimensional aluminum transmons. Using a
    copper cavity, unaffected by strong magnetic fields, we can probe solely the effect
    of magnetic fields on the transmons. We present data on a single-junction and
    a superconducting-quantum-interference-device (SQUID) transmon that are cooled
    down in the same cavity. As expected, the transmon frequencies decrease with increasing
    field, due to suppression of the superconducting gap and a geometric Fraunhofer-like
    contribution. Nevertheless, the thin-film transmons show strong magnetic field
    resilience: both transmons display microsecond coherence up to at least 0.65 T,
    and T1 remains above 1μs over the entire measurable range. SQUID spectroscopy
    is feasible up to 1 T, the limit of our magnet. We conclude that thin-film aluminum
    Josephson junctions are suitable hardware for superconducting circuits in the
    high-magnetic-field regime.'
acknowledgement: "We would like to thank Ida Milow for her internship in the laboratory
  and contributions to our code base. We thank T. Zent and L. Hamdan for technical
  assistance, and D. Fan for help with setting up the aluminum evaporator. We thank
  A. Salari, M. Rößler, S. Barzanjeh, M. Zemlicka, F. Hassani, and M. Peruzzo for
  contributions in the early stages of the experiments. This project has received
  funding from the European Research Council (ERC) under the European Union’s Horizon
  2020 research and innovation program (Grant Agreement No. 741121) and was also funded
  by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under CRC
  1238 – 277146847 (Subproject B01), as well as under Germany’s Excellence Strategy
  – Cluster of Excellence Matter and Light for Quantum Computing (ML4Q), EXC 2004/1\r\n–
  390534769."
article_number: '034032'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: J.
  full_name: Krause, J.
  last_name: Krause
- first_name: C.
  full_name: Dickel, C.
  last_name: Dickel
- first_name: E.
  full_name: Vaal, E.
  last_name: Vaal
- first_name: M.
  full_name: Vielmetter, M.
  last_name: Vielmetter
- first_name: J.
  full_name: Feng, J.
  last_name: Feng
- first_name: R.
  full_name: Bounds, R.
  last_name: Bounds
- first_name: G.
  full_name: Catelani, G.
  last_name: Catelani
- 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: Yoichi
  full_name: Ando, Yoichi
  last_name: Ando
citation:
  ama: Krause J, Dickel C, Vaal E, et al. Magnetic field resilience of three-dimensional
    transmons with thin-film Al/AlOx/Al Josephson junctions approaching 1 T. <i>Physical
    Review Applied</i>. 2022;17(3). doi:<a href="https://doi.org/10.1103/PhysRevApplied.17.034032">10.1103/PhysRevApplied.17.034032</a>
  apa: Krause, J., Dickel, C., Vaal, E., Vielmetter, M., Feng, J., Bounds, R., … Ando,
    Y. (2022). Magnetic field resilience of three-dimensional transmons with thin-film
    Al/AlOx/Al Josephson junctions approaching 1 T. <i>Physical Review Applied</i>.
    American Physical Society. <a href="https://doi.org/10.1103/PhysRevApplied.17.034032">https://doi.org/10.1103/PhysRevApplied.17.034032</a>
  chicago: Krause, J., C. Dickel, E. Vaal, M. Vielmetter, J. Feng, R. Bounds, G. Catelani,
    Johannes M Fink, and Yoichi Ando. “Magnetic Field Resilience of Three-Dimensional
    Transmons with Thin-Film Al/AlOx/Al Josephson Junctions Approaching 1 T.” <i>Physical
    Review Applied</i>. American Physical Society, 2022. <a href="https://doi.org/10.1103/PhysRevApplied.17.034032">https://doi.org/10.1103/PhysRevApplied.17.034032</a>.
  ieee: J. Krause <i>et al.</i>, “Magnetic field resilience of three-dimensional transmons
    with thin-film Al/AlOx/Al Josephson junctions approaching 1 T,” <i>Physical Review
    Applied</i>, vol. 17, no. 3. American Physical Society, 2022.
  ista: Krause J, Dickel C, Vaal E, Vielmetter M, Feng J, Bounds R, Catelani G, Fink
    JM, Ando Y. 2022. Magnetic field resilience of three-dimensional transmons with
    thin-film Al/AlOx/Al Josephson junctions approaching 1 T. Physical Review Applied.
    17(3), 034032.
  mla: Krause, J., et al. “Magnetic Field Resilience of Three-Dimensional Transmons
    with Thin-Film Al/AlOx/Al Josephson Junctions Approaching 1 T.” <i>Physical Review
    Applied</i>, vol. 17, no. 3, 034032, American Physical Society, 2022, doi:<a href="https://doi.org/10.1103/PhysRevApplied.17.034032">10.1103/PhysRevApplied.17.034032</a>.
  short: J. Krause, C. Dickel, E. Vaal, M. Vielmetter, J. Feng, R. Bounds, G. Catelani,
    J.M. Fink, Y. Ando, Physical Review Applied 17 (2022).
date_created: 2022-04-03T22:01:43Z
date_published: 2022-03-11T00:00:00Z
date_updated: 2023-08-03T06:23:58Z
day: '11'
department:
- _id: JoFi
doi: 10.1103/PhysRevApplied.17.034032
external_id:
  arxiv:
  - '2111.01115'
  isi:
  - '000770371400003'
intvolume: '        17'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2111.01115
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review Applied
publication_identifier:
  eissn:
  - 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Magnetic field resilience of three-dimensional transmons with thin-film Al/AlOx/Al
  Josephson junctions approaching 1 T
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 17
year: '2022'
...
---
_id: '11353'
abstract:
- lang: eng
  text: Micro- and nanoscale optical or microwave cavities are used in a wide range
    of classical applications and quantum science experiments, ranging from precision
    measurements, laser technologies to quantum control of mechanical motion. The
    dissipative photon loss via absorption, present to some extent in any optical
    cavity, is known to introduce thermo-optical effects and thereby impose fundamental
    limits on precision measurements. Here, we theoretically and experimentally reveal
    that such dissipative photon absorption can result in quantum feedback via in-loop
    field detection of the absorbed optical field, leading to the intracavity field
    fluctuations to be squashed or antisquashed. A closed-loop dissipative quantum
    feedback to the cavity field arises. Strikingly, this modifies the optical cavity
    susceptibility in coherent response measurements (capable of both increasing or
    decreasing the bare cavity linewidth) and causes excess noise and correlations
    in incoherent interferometric optomechanical measurements using a cavity, that
    is parametrically coupled to a mechanical oscillator. We experimentally observe
    such unanticipated dissipative dynamics in optomechanical spectroscopy of sideband-cooled
    optomechanical crystal cavitiess at both cryogenic temperature (approximately
    8 K) and ambient conditions. The dissipative feedback introduces effective modifications
    to the optical cavity linewidth and the optomechanical scattering rate and gives
    rise to excess imprecision noise in the interferometric quantum measurement of
    mechanical motion. Such dissipative feedback differs fundamentally from a quantum
    nondemolition feedback, e.g., optical Kerr squeezing. The dissipative feedback
    itself always results in an antisqueezed out-of-loop optical field, while it can
    enhance the coexisting Kerr squeezing under certain conditions. Our result applies
    to cavity spectroscopy in both optical and superconducting microwave cavities,
    and equally applies to any dissipative feedback mechanism of different bandwidth
    inside the cavity. It has wide-ranging implications for future dissipation engineering,
    such as dissipation enhanced sideband cooling and Kerr squeezing, quantum frequency
    conversion, and nonreciprocity in photonic systems.
acknowledgement: "L.Q. acknowledges fruitful discussions with D. Vitali, R. Schnabel,
  P.K. Lam, A. Nunnenkamp, and D. Malz. This work is supported by the EUH2020 research
  and innovation programme under Grant No. 732894 (FET Proactive HOT), and the European
  Research Council through \r\nGrant No. 835329 (ExCOM-cCEO). This work was further
  supported by Swiss National Science Foundation under Grant Agreements No. 185870
  (Ambizione) and No. 204927. Samples were fabricated at the Center of MicroNanoTechnology
  (CMi) at EPFL and the Binnig and Rohrer Nanotechnology Center at IBM Research-Zurich."
article_number: '020309'
article_processing_charge: No
article_type: original
author:
- first_name: Liu
  full_name: Qiu, Liu
  id: 45e99c0d-1eb1-11eb-9b96-ed8ab2983cac
  last_name: Qiu
  orcid: 0000-0003-4345-4267
- first_name: Guanhao
  full_name: Huang, Guanhao
  last_name: Huang
- first_name: Itay
  full_name: Shomroni, Itay
  last_name: Shomroni
- first_name: Jiahe
  full_name: Pan, Jiahe
  last_name: Pan
- first_name: Paul
  full_name: Seidler, Paul
  last_name: Seidler
- first_name: Tobias J.
  full_name: Kippenberg, Tobias J.
  last_name: Kippenberg
citation:
  ama: Qiu L, Huang G, Shomroni I, Pan J, Seidler P, Kippenberg TJ. Dissipative quantum
    feedback in measurements using a parametrically coupled microcavity. <i>PRX Quantum</i>.
    2022;3(2). doi:<a href="https://doi.org/10.1103/PRXQuantum.3.020309">10.1103/PRXQuantum.3.020309</a>
  apa: Qiu, L., Huang, G., Shomroni, I., Pan, J., Seidler, P., &#38; Kippenberg, T.
    J. (2022). Dissipative quantum feedback in measurements using a parametrically
    coupled microcavity. <i>PRX Quantum</i>. American Physical Society. <a href="https://doi.org/10.1103/PRXQuantum.3.020309">https://doi.org/10.1103/PRXQuantum.3.020309</a>
  chicago: Qiu, Liu, Guanhao Huang, Itay Shomroni, Jiahe Pan, Paul Seidler, and Tobias
    J. Kippenberg. “Dissipative Quantum Feedback in Measurements Using a Parametrically
    Coupled Microcavity.” <i>PRX Quantum</i>. American Physical Society, 2022. <a
    href="https://doi.org/10.1103/PRXQuantum.3.020309">https://doi.org/10.1103/PRXQuantum.3.020309</a>.
  ieee: L. Qiu, G. Huang, I. Shomroni, J. Pan, P. Seidler, and T. J. Kippenberg, “Dissipative
    quantum feedback in measurements using a parametrically coupled microcavity,”
    <i>PRX Quantum</i>, vol. 3, no. 2. American Physical Society, 2022.
  ista: Qiu L, Huang G, Shomroni I, Pan J, Seidler P, Kippenberg TJ. 2022. Dissipative
    quantum feedback in measurements using a parametrically coupled microcavity. PRX
    Quantum. 3(2), 020309.
  mla: Qiu, Liu, et al. “Dissipative Quantum Feedback in Measurements Using a Parametrically
    Coupled Microcavity.” <i>PRX Quantum</i>, vol. 3, no. 2, 020309, American Physical
    Society, 2022, doi:<a href="https://doi.org/10.1103/PRXQuantum.3.020309">10.1103/PRXQuantum.3.020309</a>.
  short: L. Qiu, G. Huang, I. Shomroni, J. Pan, P. Seidler, T.J. Kippenberg, PRX Quantum
    3 (2022).
date_created: 2022-05-08T22:01:43Z
date_published: 2022-04-13T00:00:00Z
date_updated: 2023-08-03T07:05:00Z
day: '13'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1103/PRXQuantum.3.020309
ec_funded: 1
external_id:
  isi:
  - '000789316700001'
file:
- access_level: open_access
  checksum: 35ff9ddf1d54f64432e435b660edaeb6
  content_type: application/pdf
  creator: dernst
  date_created: 2022-05-09T07:10:51Z
  date_updated: 2022-05-09T07:10:51Z
  file_id: '11358'
  file_name: 2022_PRXQuantum_Qiu.pdf
  file_size: 1657177
  relation: main_file
  success: 1
file_date_updated: 2022-05-09T07:10:51Z
has_accepted_license: '1'
intvolume: '         3'
isi: 1
issue: '2'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 257EB838-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '732894'
  name: Hybrid Optomechanical Technologies
publication: PRX Quantum
publication_identifier:
  eissn:
  - '26913399'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dissipative quantum feedback in measurements using a parametrically coupled
  microcavity
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 3
year: '2022'
...
---
_id: '11417'
abstract:
- lang: eng
  text: "Over the past few years, the field of quantum information science has seen
    tremendous progress toward realizing large-scale quantum computers. With demonstrations
    of quantum computers outperforming classical computers for a select range of problems,1–3
    we have finally entered the noisy, intermediate-scale quantum (NISQ) computing
    era. While the quantum computers of today are technological marvels, they are
    not yet error corrected, and it is unclear whether any system will scale beyond
    a few hundred logical qubits without significant changes to architecture and control
    schemes. Today's quantum systems are analogous to the ENIAC (Electronic Numerical
    Integrator And Computer) and EDVAC (Electronic Discrete Variable Automatic Computer)
    systems of the 1940s, which ran on vacuum tubes. These machines were built on
    a solid, nominally scalable architecture and when they were developed, nobody
    could have predicted the development of the transistor and the impact of the resulting
    semiconductor industry. Simply put, the computers of today are nothing like the
    early computers of the 1940s. We believe that the qubits of future fault-tolerant
    quantum systems will look quite different from the qubits of the NISQ machines
    in operation today. This Special Topic issue is devoted to new and emerging quantum
    systems with a focus on enabling technologies that can eventually lead to the
    quantum analog to the transistor. We have solicited both research4–18 and perspective
    articles19–21 to discuss new and emerging qubit systems with a focus on novel
    materials, encodings, and architectures. We are proud to present a collection
    that touches on a wide range of technologies including superconductors,7–13,21
    semiconductors,15–17,19 and individual atomic qubits.18\r\n"
acknowledgement: "We would like to thank all of the authors who contributed to\r\nthis
  Special Topic. We would also like to thank the editorial team at\r\nAPL including
  Jessica Trudeau, Emma Van Burns, Martin Weides,\r\nand Lesley Cohen."
article_number: '190401'
article_processing_charge: No
article_type: letter_note
author:
- first_name: Anthony J.
  full_name: Sigillito, Anthony J.
  last_name: Sigillito
- first_name: Jacob P.
  full_name: Covey, Jacob P.
  last_name: Covey
- 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: Karl
  full_name: Petersson, Karl
  last_name: Petersson
- first_name: Stefan
  full_name: Preble, Stefan
  last_name: Preble
citation:
  ama: 'Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. Emerging qubit systems:
    Guest editorial. <i>Applied Physics Letters</i>. 2022;120(19). doi:<a href="https://doi.org/10.1063/5.0097339">10.1063/5.0097339</a>'
  apa: 'Sigillito, A. J., Covey, J. P., Fink, J. M., Petersson, K., &#38; Preble,
    S. (2022). Emerging qubit systems: Guest editorial. <i>Applied Physics Letters</i>.
    American Institute of Physics. <a href="https://doi.org/10.1063/5.0097339">https://doi.org/10.1063/5.0097339</a>'
  chicago: 'Sigillito, Anthony J., Jacob P. Covey, Johannes M Fink, Karl Petersson,
    and Stefan Preble. “Emerging Qubit Systems: Guest Editorial.” <i>Applied Physics
    Letters</i>. American Institute of Physics, 2022. <a href="https://doi.org/10.1063/5.0097339">https://doi.org/10.1063/5.0097339</a>.'
  ieee: 'A. J. Sigillito, J. P. Covey, J. M. Fink, K. Petersson, and S. Preble, “Emerging
    qubit systems: Guest editorial,” <i>Applied Physics Letters</i>, vol. 120, no.
    19. American Institute of Physics, 2022.'
  ista: 'Sigillito AJ, Covey JP, Fink JM, Petersson K, Preble S. 2022. Emerging qubit
    systems: Guest editorial. Applied Physics Letters. 120(19), 190401.'
  mla: 'Sigillito, Anthony J., et al. “Emerging Qubit Systems: Guest Editorial.” <i>Applied
    Physics Letters</i>, vol. 120, no. 19, 190401, American Institute of Physics,
    2022, doi:<a href="https://doi.org/10.1063/5.0097339">10.1063/5.0097339</a>.'
  short: A.J. Sigillito, J.P. Covey, J.M. Fink, K. Petersson, S. Preble, Applied Physics
    Letters 120 (2022).
date_created: 2022-05-29T22:01:53Z
date_published: 2022-05-12T00:00:00Z
date_updated: 2023-08-03T07:16:20Z
day: '12'
department:
- _id: JoFi
doi: 10.1063/5.0097339
external_id:
  isi:
  - '000796002100002'
intvolume: '       120'
isi: 1
issue: '19'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1063/5.0097339
month: '05'
oa: 1
oa_version: Published Version
publication: Applied Physics Letters
publication_identifier:
  issn:
  - 0003-6951
publication_status: published
publisher: American Institute of Physics
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Emerging qubit systems: Guest editorial'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 120
year: '2022'
...
---
_id: '11591'
abstract:
- lang: eng
  text: We investigate the deterministic generation and distribution of entanglement
    in large quantum networks by driving distant qubits with the output fields of
    a nondegenerate parametric amplifier. In this setting, the amplifier produces
    a continuous Gaussian two-mode squeezed state, which acts as a quantum-correlated
    reservoir for the qubits and relaxes them into a highly entangled steady state.
    Here we are interested in the maximal amount of entanglement and the optimal entanglement
    generation rates that can be achieved with this scheme under realistic conditions
    taking, in particular, the finite amplifier bandwidth, waveguide losses, and propagation
    delays into account. By combining exact numerical simulations of the full network
    with approximate analytic results, we predict the optimal working point for the
    amplifier and the corresponding qubit-qubit entanglement under various conditions.
    Our findings show that this passive conversion of Gaussian into discrete-variable
    entanglement offers a robust and experimentally very attractive approach for operating
    large optical, microwave, or hybrid quantum networks, for which efficient parametric
    amplifiers are currently developed.
acknowledgement: We thank T. Mavrogordatos and D. Zhu for initial contribution on
  the presented topic and K. Fedorov for stimulating discussions on entangled microwave
  beams. This work was supported by the Austrian Science Fund (FWF) through Grant
  No. P32299 (PHONED) and the European Union’s Horizon 2020 research and innovation
  programme under Grant Agreement No. 899354 (SuperQuLAN). Most of the computational
  results presented were obtained using the CLIP cluster [65].
article_number: '062454'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: J.
  full_name: Agustí, J.
  last_name: Agustí
- first_name: Y.
  full_name: Minoguchi, Y.
  last_name: Minoguchi
- 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: P.
  full_name: Rabl, P.
  last_name: Rabl
citation:
  ama: Agustí J, Minoguchi Y, Fink JM, Rabl P. Long-distance distribution of qubit-qubit
    entanglement using Gaussian-correlated photonic beams. <i>Physical Review A</i>.
    2022;105(6). doi:<a href="https://doi.org/10.1103/PhysRevA.105.062454">10.1103/PhysRevA.105.062454</a>
  apa: Agustí, J., Minoguchi, Y., Fink, J. M., &#38; Rabl, P. (2022). Long-distance
    distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams.
    <i>Physical Review A</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevA.105.062454">https://doi.org/10.1103/PhysRevA.105.062454</a>
  chicago: Agustí, J., Y. Minoguchi, Johannes M Fink, and P. Rabl. “Long-Distance
    Distribution of Qubit-Qubit Entanglement Using Gaussian-Correlated Photonic Beams.”
    <i>Physical Review A</i>. American Physical Society, 2022. <a href="https://doi.org/10.1103/PhysRevA.105.062454">https://doi.org/10.1103/PhysRevA.105.062454</a>.
  ieee: J. Agustí, Y. Minoguchi, J. M. Fink, and P. Rabl, “Long-distance distribution
    of qubit-qubit entanglement using Gaussian-correlated photonic beams,” <i>Physical
    Review A</i>, vol. 105, no. 6. American Physical Society, 2022.
  ista: Agustí J, Minoguchi Y, Fink JM, Rabl P. 2022. Long-distance distribution of
    qubit-qubit entanglement using Gaussian-correlated photonic beams. Physical Review
    A. 105(6), 062454.
  mla: Agustí, J., et al. “Long-Distance Distribution of Qubit-Qubit Entanglement
    Using Gaussian-Correlated Photonic Beams.” <i>Physical Review A</i>, vol. 105,
    no. 6, 062454, American Physical Society, 2022, doi:<a href="https://doi.org/10.1103/PhysRevA.105.062454">10.1103/PhysRevA.105.062454</a>.
  short: J. Agustí, Y. Minoguchi, J.M. Fink, P. Rabl, Physical Review A 105 (2022).
date_created: 2022-07-17T22:01:55Z
date_published: 2022-06-29T00:00:00Z
date_updated: 2023-08-03T11:58:16Z
day: '29'
department:
- _id: JoFi
doi: 10.1103/PhysRevA.105.062454
ec_funded: 1
external_id:
  arxiv:
  - '2204.02993'
  isi:
  - '000824330200003'
intvolume: '       105'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2204.02993'
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated
  photonic beams
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 105
year: '2022'
...
