---
_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: '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: '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
  checksum: 7d03f1a5a5258ee43dfc3323dea4e08f
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-06-30T08:17:25Z
  date_updated: 2023-06-30T08:17:25Z
  file_id: '13176'
  file_name: thesis_pdfa.pdf
  file_size: 18688376
  relation: main_file
  success: 1
- access_level: closed
  checksum: c3b45317ae58e0527533f98c202d81b7
  content_type: application/x-zip-compressed
  creator: cchlebak
  date_created: 2023-07-06T11:35:15Z
  date_updated: 2023-07-06T11:35:15Z
  file_id: '13196'
  file_name: thesis.zip
  file_size: 37847025
  relation: source_file
file_date_updated: 2023-07-06T11:35:15Z
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:
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  checksum: ec7ccd2c08f90d59cab302fd0d7776a4
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  creator: alisjak
  date_created: 2023-07-10T10:10:54Z
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has_accepted_license: '1'
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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: '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:
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  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'
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    status: public
  - id: '10924'
    relation: part_of_dissertation
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  - 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:
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  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
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file_date_updated: 2022-03-28T08:02:12Z
has_accepted_license: '1'
intvolume: '        13'
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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:
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  - id: '12900'
    relation: dissertation_contains
    status: public
  - id: '13175'
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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: '12088'
abstract:
- lang: eng
  text: We present a quantum-enabled microwave-telecom interface with bidirectional
    conversion efficiencies up to 15% and added input noise quanta as low as 0.16.
    Moreover, we observe evidence for electro-optic laser cooling and vacuum amplification.
article_number: FW4D.4
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: William J
  full_name: Hease, William J
  id: 29705398-F248-11E8-B48F-1D18A9856A87
  last_name: Hease
- 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
- 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. Realizing a
    quantum-enabled interconnect between microwave and telecom light. In: <i>Conference
    on Lasers and Electro-Optics</i>. Optica Publishing Group; 2022. doi:<a href="https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4">10.1364/CLEO_QELS.2022.FW4D.4</a>'
  apa: 'Sahu, R., Hease, W. J., Rueda Sanchez, A. R., Arnold, G. M., Qiu, L., &#38;
    Fink, J. M. (2022). Realizing a quantum-enabled interconnect between microwave
    and telecom light. In <i>Conference on Lasers and Electro-Optics</i>. San Jose,
    CA, United States: Optica Publishing Group. <a href="https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4">https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4</a>'
  chicago: Sahu, Rishabh, William J Hease, Alfredo R Rueda Sanchez, Georg M Arnold,
    Liu Qiu, and Johannes M Fink. “Realizing a Quantum-Enabled Interconnect between
    Microwave and Telecom Light.” In <i>Conference on Lasers and Electro-Optics</i>.
    Optica Publishing Group, 2022. <a href="https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4">https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4</a>.
  ieee: R. Sahu, W. J. Hease, A. R. Rueda Sanchez, G. M. Arnold, L. Qiu, and J. M.
    Fink, “Realizing a quantum-enabled interconnect between microwave and telecom
    light,” in <i>Conference on Lasers and Electro-Optics</i>, San Jose, CA, United
    States, 2022.
  ista: 'Sahu R, Hease WJ, Rueda Sanchez AR, Arnold GM, Qiu L, Fink JM. 2022. Realizing
    a quantum-enabled interconnect between microwave and telecom light. Conference
    on Lasers and Electro-Optics. CLEO: QELS Fundamental Science, FW4D.4.'
  mla: Sahu, Rishabh, et al. “Realizing a Quantum-Enabled Interconnect between Microwave
    and Telecom Light.” <i>Conference on Lasers and Electro-Optics</i>, FW4D.4, Optica
    Publishing Group, 2022, doi:<a href="https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4">10.1364/CLEO_QELS.2022.FW4D.4</a>.
  short: R. Sahu, W.J. Hease, A.R. Rueda Sanchez, G.M. Arnold, L. Qiu, J.M. Fink,
    in:, Conference on Lasers and Electro-Optics, Optica Publishing Group, 2022.
conference:
  end_date: 2022-05-20
  location: San Jose, CA, United States
  name: 'CLEO: QELS Fundamental Science'
  start_date: 2022-05-15
date_created: 2022-09-11T22:01:58Z
date_published: 2022-05-01T00:00:00Z
date_updated: 2023-02-13T09:06:10Z
day: '01'
department:
- _id: JoFi
doi: 10.1364/CLEO_QELS.2022.FW4D.4
language:
- iso: eng
month: '05'
oa_version: None
publication: Conference on Lasers and Electro-Optics
publication_identifier:
  isbn:
  - '9781557528209'
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Realizing a quantum-enabled interconnect between microwave and telecom light
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '13071'
abstract:
- lang: eng
  text: This dataset comprises all data shown in the plots of the main part of the
    submitted article "Bidirectional Electro-Optic Wavelength Conversion in the Quantum
    Ground State". Additional raw data are available from the corresponding author
    on reasonable request.
article_processing_charge: No
author:
- 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: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: Matthias
  full_name: Wulf, Matthias
  id: 45598606-F248-11E8-B48F-1D18A9856A87
  last_name: Wulf
  orcid: 0000-0001-6613-1378
- 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: Harald
  full_name: Schwefel, Harald
  last_name: Schwefel
- 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: Hease WJ, Rueda Sanchez AR, Sahu R, et al. Bidirectional electro-optic wavelength
    conversion in the quantum ground state. 2020. doi:<a href="https://doi.org/10.5281/ZENODO.4266025">10.5281/ZENODO.4266025</a>
  apa: Hease, W. J., Rueda Sanchez, A. R., Sahu, R., Wulf, M., Arnold, G. M., Schwefel,
    H., &#38; Fink, J. M. (2020). Bidirectional electro-optic wavelength conversion
    in the quantum ground state. Zenodo. <a href="https://doi.org/10.5281/ZENODO.4266025">https://doi.org/10.5281/ZENODO.4266025</a>
  chicago: Hease, William J, Alfredo R Rueda Sanchez, Rishabh Sahu, Matthias Wulf,
    Georg M Arnold, Harald Schwefel, and Johannes M Fink. “Bidirectional Electro-Optic
    Wavelength Conversion in the Quantum Ground State.” Zenodo, 2020. <a href="https://doi.org/10.5281/ZENODO.4266025">https://doi.org/10.5281/ZENODO.4266025</a>.
  ieee: W. J. Hease <i>et al.</i>, “Bidirectional electro-optic wavelength conversion
    in the quantum ground state.” Zenodo, 2020.
  ista: Hease WJ, Rueda Sanchez AR, Sahu R, Wulf M, Arnold GM, Schwefel H, Fink JM.
    2020. Bidirectional electro-optic wavelength conversion in the quantum ground
    state, Zenodo, <a href="https://doi.org/10.5281/ZENODO.4266025">10.5281/ZENODO.4266025</a>.
  mla: Hease, William J., et al. <i>Bidirectional Electro-Optic Wavelength Conversion
    in the Quantum Ground State</i>. Zenodo, 2020, doi:<a href="https://doi.org/10.5281/ZENODO.4266025">10.5281/ZENODO.4266025</a>.
  short: W.J. Hease, A.R. Rueda Sanchez, R. Sahu, M. Wulf, G.M. Arnold, H. Schwefel,
    J.M. Fink, (2020).
date_created: 2023-05-23T16:44:11Z
date_published: 2020-11-10T00:00:00Z
date_updated: 2024-09-10T12:23:54Z
day: '10'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.4266025
main_file_link:
- open_access: '1'
  url: https://doi.org/10.5281/zenodo.4266026
month: '11'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
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  - id: '9114'
    relation: used_in_publication
    status: public
status: public
title: Bidirectional electro-optic wavelength conversion in the quantum ground state
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...
---
_id: '9114'
abstract:
- lang: eng
  text: "Microwave photonics lends the advantages of fiber optics to electronic sensing
    and communication systems. In contrast to nonlinear optics, electro-optic devices
    so far require classical modulation fields whose variance is dominated by electronic
    or thermal noise rather than quantum fluctuations. Here we demonstrate bidirectional
    single-sideband conversion of X band microwave to C band telecom light with a
    microwave mode occupancy as low as 0.025 ± 0.005 and an added output noise of
    less than or equal to 0.074 photons. This is facilitated by radiative cooling
    and a triply resonant ultra-low-loss transducer operating at millikelvin temperatures.
    The high bandwidth of 10.7 MHz and total (internal) photon conversion\r\nefficiency
    of 0.03% (0.67%) combined with the extremely slow heating rate of 1.1 added output
    noise photons per second for the highest available pump power of 1.48 mW puts
    near-unity efficiency pulsed quantum transduction within reach. Together with
    the non-Gaussian resources of superconducting qubits this might provide the practical
    foundation to extend the range and scope of current quantum networks in analogy
    to electrical repeaters in classical fiber optic communication."
acknowledged_ssus:
- _id: M-Shop
acknowledgement: "The authors acknowledge the support of T. Menner, A. Arslani, and
  T. Asenov from the Miba machine shop for machining the microwave cavity, and thank
  S. Barzanjeh, F. Sedlmeir, and C. Marquardt for fruitful discussions. This work
  is supported by IST Austria and the European Research Council under Grant No. 758053
  (ERC StG QUNNECT). 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 No. 754411.\r\nG.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 (F71) and the European Union’s
  Horizon 2020 research and innovation program under Grant No. 899354 (FET Open SuperQuLAN).
  H.G.L.S. acknowledges support from the Aotearoa/New Zealand’s MBIE Endeavour Smart
  Ideas Grant No UOOX1805."
article_number: '020315'
article_processing_charge: No
article_type: original
author:
- 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: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
- first_name: Matthias
  full_name: Wulf, Matthias
  id: 45598606-F248-11E8-B48F-1D18A9856A87
  last_name: Wulf
  orcid: 0000-0001-6613-1378
- 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: Harald G.L.
  full_name: Schwefel, Harald G.L.
  last_name: Schwefel
- 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: Hease WJ, Rueda Sanchez AR, Sahu R, et al. Bidirectional electro-optic wavelength
    conversion in the quantum ground state. <i>PRX Quantum</i>. 2020;1(2). doi:<a
    href="https://doi.org/10.1103/prxquantum.1.020315">10.1103/prxquantum.1.020315</a>
  apa: Hease, W. J., Rueda Sanchez, A. R., Sahu, R., Wulf, M., Arnold, G. M., Schwefel,
    H. G. L., &#38; Fink, J. M. (2020). Bidirectional electro-optic wavelength conversion
    in the quantum ground state. <i>PRX Quantum</i>. American Physical Society. <a
    href="https://doi.org/10.1103/prxquantum.1.020315">https://doi.org/10.1103/prxquantum.1.020315</a>
  chicago: Hease, William J, Alfredo R Rueda Sanchez, Rishabh Sahu, Matthias Wulf,
    Georg M Arnold, Harald G.L. Schwefel, and Johannes M Fink. “Bidirectional Electro-Optic
    Wavelength Conversion in the Quantum Ground State.” <i>PRX Quantum</i>. American
    Physical Society, 2020. <a href="https://doi.org/10.1103/prxquantum.1.020315">https://doi.org/10.1103/prxquantum.1.020315</a>.
  ieee: W. J. Hease <i>et al.</i>, “Bidirectional electro-optic wavelength conversion
    in the quantum ground state,” <i>PRX Quantum</i>, vol. 1, no. 2. American Physical
    Society, 2020.
  ista: Hease WJ, Rueda Sanchez AR, Sahu R, Wulf M, Arnold GM, Schwefel HGL, Fink
    JM. 2020. Bidirectional electro-optic wavelength conversion in the quantum ground
    state. PRX Quantum. 1(2), 020315.
  mla: Hease, William J., et al. “Bidirectional Electro-Optic Wavelength Conversion
    in the Quantum Ground State.” <i>PRX Quantum</i>, vol. 1, no. 2, 020315, American
    Physical Society, 2020, doi:<a href="https://doi.org/10.1103/prxquantum.1.020315">10.1103/prxquantum.1.020315</a>.
  short: W.J. Hease, A.R. Rueda Sanchez, R. Sahu, M. Wulf, G.M. Arnold, H.G.L. Schwefel,
    J.M. Fink, PRX Quantum 1 (2020).
date_created: 2021-02-12T10:41:28Z
date_published: 2020-11-23T00:00:00Z
date_updated: 2024-10-29T09:11:05Z
day: '23'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1103/prxquantum.1.020315
ec_funded: 1
external_id:
  isi:
  - '000674680100001'
file:
- access_level: open_access
  checksum: b70b12ded6d7660d4c9037eb09bfed0c
  content_type: application/pdf
  creator: dernst
  date_created: 2021-02-12T11:16:16Z
  date_updated: 2021-02-12T11:16:16Z
  file_id: '9115'
  file_name: 2020_PRXQuantum_Hease.pdf
  file_size: 2146924
  relation: main_file
  success: 1
file_date_updated: 2021-02-12T11:16:16Z
has_accepted_license: '1'
intvolume: '         1'
isi: 1
issue: '2'
language:
- iso: eng
month: '11'
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: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: 26927A52-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: F07105
  name: Integrating superconducting quantum circuits
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
  name: Coherent on-chip conversion of superconducting qubit signals from microwaves
    to optical frequencies
publication: PRX Quantum
publication_identifier:
  issn:
  - 2691-3399
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/how-to-transport-microwave-quantum-information-via-optical-fiber/
  record:
  - id: '13071'
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  - id: '13175'
    relation: dissertation_contains
    status: public
status: public
title: Bidirectional electro-optic wavelength conversion in the quantum ground state
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: 1
year: '2020'
...
