---
_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. Physical
Review Applied. 2023;20(4). doi:10.1103/PhysRevApplied.20.044054'
apa: 'Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh,
S., & Fink, J. M. (2023). Compact vacuum-gap transmon qubits: Selective and
sensitive probes for superconductor surface losses. Physical Review Applied.
American Physical Society. https://doi.org/10.1103/PhysRevApplied.20.044054'
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.” Physical
Review Applied. American Physical Society, 2023. https://doi.org/10.1103/PhysRevApplied.20.044054.'
ieee: 'M. Zemlicka et al., “Compact vacuum-gap transmon qubits: Selective
and sensitive probes for superconductor surface losses,” Physical Review Applied,
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.” Physical Review Applied,
vol. 20, no. 4, 044054, American Physical Society, 2023, doi:10.1103/PhysRevApplied.20.044054.'
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: '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: Frontiers in Optics + Laser Science 2023. Optica Publishing
Group; 2023. doi:10.1364/ls.2023.lm1f.3'
apa: 'Sahu, R., Qiu, L., Hease, W. J., Arnold, G. M., Minoguchi, Y., Rabl, P., &
Fink, J. M. (2023). Entangling microwaves and telecom wavelength light. In Frontiers
in Optics + Laser Science 2023. Tacoma, WA, United States: Optica Publishing
Group. https://doi.org/10.1364/ls.2023.lm1f.3'
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 Frontiers in Optics + Laser Science 2023. Optica Publishing
Group, 2023. https://doi.org/10.1364/ls.2023.lm1f.3.
ieee: R. Sahu et al., “Entangling microwaves and telecom wavelength light,”
in Frontiers in Optics + Laser Science 2023, 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.”
Frontiers in Optics + Laser Science 2023, LM1F.3, Optica Publishing Group,
2023, doi:10.1364/ls.2023.lm1f.3.
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:10.1126/science.adg3812
apa: Sahu, R., Qiu, L., Hease, W. J., Arnold, G. M., Minoguchi, Y., Rabl, P., &
Fink, J. M. (2023). Entangling microwaves with light. American Association
for the Advancement of Science. https://doi.org/10.1126/science.adg3812
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. https://doi.org/10.1126/science.adg3812.
ieee: R. Sahu et al., “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. Entangling Microwaves with Light. Vol. 380, American
Association for the Advancement of Science, 2023, pp. 718–21, doi:10.1126/science.adg3812.
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. Nature
Communications. 2023;14. doi:10.1038/s41467-023-38761-6
apa: Redchenko, E., Poshakinskiy, A. V., Sett, R., Zemlicka, M., Poddubny, A. N.,
& Fink, J. M. (2023). Tunable directional photon scattering from a pair of
superconducting qubits. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-023-38761-6
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.” Nature Communications. Springer
Nature, 2023. https://doi.org/10.1038/s41467-023-38761-6.
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,” Nature Communications, 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.” Nature Communications, vol. 14, 2998, Springer
Nature, 2023, doi:10.1038/s41467-023-38761-6.
short: E. Redchenko, A.V. Poshakinskiy, R. Sett, M. Zemlicka, A.N. Poddubny, J.M.
Fink, Nature Communications 14 (2023).
date_created: 2023-06-04T22:01:02Z
date_published: 2023-05-24T00:00:00Z
date_updated: 2024-08-07T07:11:50Z
day: '24'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-023-38761-6
ec_funded: 1
external_id:
arxiv:
- '2205.03293'
isi:
- '001001099700002'
file:
- access_level: open_access
checksum: a857df40f0882859c48a1ff1e2001ec2
content_type: application/pdf
creator: dernst
date_created: 2023-06-06T07:31:20Z
date_updated: 2023-06-06T07:31:20Z
file_id: '13123'
file_name: 2023_NaturePhysics_Redchenko.pdf
file_size: 1654389
relation: main_file
success: 1
file_date_updated: 2023-06-06T07:31:20Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 26927A52-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: F07105
name: Integrating superconducting quantum circuits
- _id: 26336814-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '758053'
name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 26B354CA-B435-11E9-9278-68D0E5697425
name: Controllable Collective States of Superconducting Qubit Ensembles
- _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2
name: Protected states of quantum matter
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '13124'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Tunable directional photon scattering from a pair of superconducting qubits
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 14
year: '2023'
...
---
_id: '13124'
abstract:
- lang: eng
text: This dataset comprises all data shown in the figures of the submitted article
"Tunable directional photon scattering from a pair of superconducting qubits"
at arXiv:2205.03293. Additional raw data are available from the corresponding
author on reasonable request.
article_processing_charge: No
author:
- first_name: Elena
full_name: Redchenko, Elena
id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
last_name: Redchenko
- first_name: Alexander
full_name: Poshakinskiy, Alexander
last_name: Poshakinskiy
- first_name: Riya
full_name: Sett, Riya
id: 2E6D040E-F248-11E8-B48F-1D18A9856A87
last_name: Sett
- first_name: Martin
full_name: Zemlicka, Martin
id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
last_name: Zemlicka
- first_name: Alexander
full_name: Poddubny, Alexander
last_name: Poddubny
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: Redchenko E, Poshakinskiy A, Sett R, Zemlicka M, Poddubny A, Fink JM. Tunable
directional photon scattering from a pair of superconducting qubits. 2023. doi:10.5281/ZENODO.7858567
apa: Redchenko, E., Poshakinskiy, A., Sett, R., Zemlicka, M., Poddubny, A., &
Fink, J. M. (2023). Tunable directional photon scattering from a pair of superconducting
qubits. Zenodo. https://doi.org/10.5281/ZENODO.7858567
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. https://doi.org/10.5281/ZENODO.7858567.
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,
10.5281/ZENODO.7858567.
mla: Redchenko, Elena, et al. Tunable Directional Photon Scattering from a Pair
of Superconducting Qubits. Zenodo, 2023, doi:10.5281/ZENODO.7858567.
short: E. Redchenko, A. Poshakinskiy, R. Sett, M. Zemlicka, A. Poddubny, J.M. Fink,
(2023).
date_created: 2023-06-06T07:36:50Z
date_published: 2023-04-28T00:00:00Z
date_updated: 2024-09-10T12:23:51Z
day: '28'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.7858567
main_file_link:
- open_access: '1'
url: https://doi.org/10.5281/zenodo.7858567
month: '04'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
record:
- id: '13117'
relation: used_in_publication
status: public
status: public
title: Tunable directional photon scattering from a pair of superconducting qubits
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '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. Nature
Communications. 2023;14. doi:10.1038/s41467-023-39493-3
apa: Qiu, L., Sahu, R., Hease, W. J., Arnold, G. M., & Fink, J. M. (2023). Coherent
optical control of a superconducting microwave cavity via electro-optical dynamical
back-action. Nature Communications. Nature Research. https://doi.org/10.1038/s41467-023-39493-3
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.” Nature Communications. Nature Research, 2023. https://doi.org/10.1038/s41467-023-39493-3.
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,”
Nature Communications, 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.” Nature Communications, vol.
14, 3784, Nature Research, 2023, doi:10.1038/s41467-023-39493-3.
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
checksum: ec7ccd2c08f90d59cab302fd0d7776a4
content_type: application/pdf
creator: alisjak
date_created: 2023-07-10T10:10:54Z
date_updated: 2023-07-10T10:10:54Z
file_id: '13206'
file_name: 2023_NatureComms_Qiu.pdf
file_size: 1349134
relation: main_file
success: 1
file_date_updated: 2023-07-10T10:10:54Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
language:
- iso: eng
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. Nature Communications. 2023;14. doi:10.1038/s41467-023-39656-2
apa: Hassani, F., Peruzzo, M., Kapoor, L., Trioni, A., Zemlicka, M., & Fink,
J. M. (2023). Inductively shunted transmons exhibit noise insensitive plasmon
states and a fluxon decay exceeding 3 hours. Nature Communications. Springer
Nature. https://doi.org/10.1038/s41467-023-39656-2
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.” Nature Communications.
Springer Nature, 2023. https://doi.org/10.1038/s41467-023-39656-2.
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,” Nature Communications, 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.” Nature Communications,
vol. 14, 3968, Springer Nature, 2023, doi:10.1038/s41467-023-39656-2.
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. Nature Physics. 2023;19:1630-1635.
doi:10.1038/s41567-023-02161-w
apa: Mukhopadhyay, S., Senior, J. L., Saez Mollejo, J., Puglia, D., Zemlicka, M.,
Fink, J. M., & Higginbotham, A. P. (2023). Superconductivity from a melted
insulator in Josephson junction arrays. Nature Physics. Springer Nature.
https://doi.org/10.1038/s41567-023-02161-w
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.” Nature Physics.
Springer Nature, 2023. https://doi.org/10.1038/s41567-023-02161-w.
ieee: S. Mukhopadhyay et al., “Superconductivity from a melted insulator
in Josephson junction arrays,” Nature Physics, 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.” Nature Physics, vol. 19, Springer Nature, 2023, pp. 1630–35,
doi:10.1038/s41567-023-02161-w.
short: S. Mukhopadhyay, J.L. Senior, J. Saez Mollejo, D. Puglia, M. Zemlicka, J.M.
Fink, A.P. Higginbotham, Nature Physics 19 (2023) 1630–1635.
date_created: 2023-08-11T07:41:17Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-01-29T11:27:49Z
day: '01'
ddc:
- '530'
department:
- _id: GradSch
- _id: AnHi
- _id: JoFi
doi: 10.1038/s41567-023-02161-w
ec_funded: 1
external_id:
isi:
- '001054563800006'
file:
- access_level: open_access
checksum: 1fc86d71bfbf836e221c1e925343adc5
content_type: application/pdf
creator: dernst
date_created: 2024-01-29T11:25:38Z
date_updated: 2024-01-29T11:25:38Z
file_id: '14899'
file_name: 2023_NaturePhysics_Mukhopadhyay.pdf
file_size: 1977706
relation: main_file
success: 1
file_date_updated: 2024-01-29T11:25:38Z
has_accepted_license: '1'
intvolume: ' 19'
isi: 1
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 1630-1635
project:
- _id: 0aa3608a-070f-11eb-9043-e9cd8a2bd931
grant_number: P33692
name: Cavity electromechanics across a quantum phase transition
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: eb9b30ac-77a9-11ec-83b8-871f581d53d2
name: Protected states of quantum matter
- _id: bd5b4ec5-d553-11ed-ba76-a6eedb083344
name: Protected states of quantum matter
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superconductivity from a melted insulator in Josephson junction arrays
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2023'
...
---
_id: '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. Nature Communications. 2022;13.
doi:10.1038/s41467-022-28924-2
apa: Sahu, R., Hease, W. J., Rueda Sanchez, A. R., Arnold, G. M., Qiu, L., &
Fink, J. M. (2022). Quantum-enabled operation of a microwave-optical interface.
Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-022-28924-2
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.” Nature Communications. Springer Nature, 2022. https://doi.org/10.1038/s41467-022-28924-2.
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,” Nature
Communications, 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.”
Nature Communications, vol. 13, 1276, Springer Nature, 2022, doi:10.1038/s41467-022-28924-2.
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. Physical
Review Applied. 2022;17(3). doi:10.1103/PhysRevApplied.17.034032
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. Physical Review Applied.
American Physical Society. https://doi.org/10.1103/PhysRevApplied.17.034032
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.” Physical
Review Applied. American Physical Society, 2022. https://doi.org/10.1103/PhysRevApplied.17.034032.
ieee: J. Krause et al., “Magnetic field resilience of three-dimensional transmons
with thin-film Al/AlOx/Al Josephson junctions approaching 1 T,” Physical Review
Applied, 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.” Physical Review
Applied, vol. 17, no. 3, 034032, American Physical Society, 2022, doi:10.1103/PhysRevApplied.17.034032.
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: '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. Applied Physics Letters. 2022;120(19). doi:10.1063/5.0097339'
apa: 'Sigillito, A. J., Covey, J. P., Fink, J. M., Petersson, K., & Preble,
S. (2022). Emerging qubit systems: Guest editorial. Applied Physics Letters.
American Institute of Physics. https://doi.org/10.1063/5.0097339'
chicago: 'Sigillito, Anthony J., Jacob P. Covey, Johannes M Fink, Karl Petersson,
and Stefan Preble. “Emerging Qubit Systems: Guest Editorial.” Applied Physics
Letters. American Institute of Physics, 2022. https://doi.org/10.1063/5.0097339.'
ieee: 'A. J. Sigillito, J. P. Covey, J. M. Fink, K. Petersson, and S. Preble, “Emerging
qubit systems: Guest editorial,” Applied Physics Letters, 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.” Applied
Physics Letters, vol. 120, no. 19, 190401, American Institute of Physics,
2022, doi:10.1063/5.0097339.'
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. Physical Review A.
2022;105(6). doi:10.1103/PhysRevA.105.062454
apa: Agustí, J., Minoguchi, Y., Fink, J. M., & Rabl, P. (2022). Long-distance
distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams.
Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.105.062454
chicago: Agustí, J., Y. Minoguchi, Johannes M Fink, and P. Rabl. “Long-Distance
Distribution of Qubit-Qubit Entanglement Using Gaussian-Correlated Photonic Beams.”
Physical Review A. American Physical Society, 2022. https://doi.org/10.1103/PhysRevA.105.062454.
ieee: J. Agustí, Y. Minoguchi, J. M. Fink, and P. Rabl, “Long-distance distribution
of qubit-qubit entanglement using Gaussian-correlated photonic beams,” Physical
Review A, 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.” Physical Review A, vol. 105,
no. 6, 062454, American Physical Society, 2022, doi:10.1103/PhysRevA.105.062454.
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'
...
---
_id: '14520'
abstract:
- lang: eng
text: 'This dataset comprises all data shown in the figures of the submitted article
"Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor
surface losses" at arxiv.org/abs/2206.14104. Additional raw data are available
from the corresponding author on reasonable request.'
article_processing_charge: No
author:
- first_name: Martin
full_name: Zemlicka, Martin
id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
last_name: Zemlicka
- first_name: Elena
full_name: Redchenko, Elena
id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
last_name: Redchenko
- first_name: Matilda
full_name: Peruzzo, Matilda
id: 3F920B30-F248-11E8-B48F-1D18A9856A87
last_name: Peruzzo
orcid: 0000-0002-3415-4628
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- first_name: Andrea
full_name: Trioni, Andrea
id: 42F71B44-F248-11E8-B48F-1D18A9856A87
last_name: Trioni
- first_name: Shabir
full_name: Barzanjeh, Shabir
id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
last_name: Barzanjeh
orcid: 0000-0003-0415-1423
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: 'Zemlicka M, Redchenko E, Peruzzo M, et al. Compact vacuum gap transmon qubits:
Selective and sensitive probes for superconductor surface losses. 2022. doi:10.5281/ZENODO.8408897'
apa: 'Zemlicka, M., Redchenko, E., Peruzzo, M., Hassani, F., Trioni, A., Barzanjeh,
S., & Fink, J. M. (2022). Compact vacuum gap transmon qubits: Selective and
sensitive probes for superconductor surface losses. Zenodo. https://doi.org/10.5281/ZENODO.8408897'
chicago: 'Zemlicka, Martin, Elena Redchenko, Matilda Peruzzo, Farid Hassani, Andrea
Trioni, Shabir Barzanjeh, and Johannes M Fink. “Compact Vacuum Gap Transmon Qubits:
Selective and Sensitive Probes for Superconductor Surface Losses.” Zenodo, 2022.
https://doi.org/10.5281/ZENODO.8408897.'
ieee: 'M. Zemlicka et al., “Compact vacuum gap transmon qubits: Selective
and sensitive probes for superconductor surface losses.” Zenodo, 2022.'
ista: 'Zemlicka M, Redchenko E, Peruzzo M, Hassani F, Trioni A, Barzanjeh S, Fink
JM. 2022. Compact vacuum gap transmon qubits: Selective and sensitive probes for
superconductor surface losses, Zenodo, 10.5281/ZENODO.8408897.'
mla: 'Zemlicka, Martin, et al. Compact Vacuum Gap Transmon Qubits: Selective
and Sensitive Probes for Superconductor Surface Losses. Zenodo, 2022, doi:10.5281/ZENODO.8408897.'
short: M. Zemlicka, E. Redchenko, M. Peruzzo, F. Hassani, A. Trioni, S. Barzanjeh,
J.M. Fink, (2022).
date_created: 2023-11-13T08:09:10Z
date_published: 2022-06-28T00:00:00Z
date_updated: 2024-09-10T12:23:57Z
day: '28'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.8408897
has_accepted_license: '1'
license: https://creativecommons.org/publicdomain/zero/1.0/
main_file_link:
- open_access: '1'
url: https://doi.org/10.5281/ZENODO.8408897
month: '06'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
record:
- id: '14517'
relation: used_in_publication
status: public
status: public
title: 'Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor
surface losses'
tmp:
image: /images/cc_0.png
legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode
name: Creative Commons Public Domain Dedication (CC0 1.0)
short: CC0 (1.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '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: Conference
on Lasers and Electro-Optics. Optica Publishing Group; 2022. doi:10.1364/CLEO_QELS.2022.FW4D.4'
apa: 'Sahu, R., Hease, W. J., Rueda Sanchez, A. R., Arnold, G. M., Qiu, L., &
Fink, J. M. (2022). Realizing a quantum-enabled interconnect between microwave
and telecom light. In Conference on Lasers and Electro-Optics. San Jose,
CA, United States: Optica Publishing Group. https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4'
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 Conference on Lasers and Electro-Optics.
Optica Publishing Group, 2022. https://doi.org/10.1364/CLEO_QELS.2022.FW4D.4.
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 Conference on Lasers and Electro-Optics, 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.” Conference on Lasers and Electro-Optics, FW4D.4, Optica
Publishing Group, 2022, doi:10.1364/CLEO_QELS.2022.FW4D.4.
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: '13057'
abstract:
- lang: eng
text: 'This dataset comprises all data shown in the figures of the submitted article
"Geometric superinductance qubits: Controlling phase delocalization across a single
Josephson junction". Additional raw data are available from the corresponding
author on reasonable request.'
article_processing_charge: No
author:
- first_name: Matilda
full_name: Peruzzo, Matilda
id: 3F920B30-F248-11E8-B48F-1D18A9856A87
last_name: Peruzzo
orcid: 0000-0002-3415-4628
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- first_name: Grisha
full_name: Szep, Grisha
last_name: Szep
- first_name: Andrea
full_name: Trioni, Andrea
id: 42F71B44-F248-11E8-B48F-1D18A9856A87
last_name: Trioni
- first_name: Elena
full_name: Redchenko, Elena
id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
last_name: Redchenko
- first_name: Martin
full_name: Zemlicka, Martin
id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
last_name: Zemlicka
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: 'Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling
phase delocalization across a single Josephson junction. 2021. doi:10.5281/ZENODO.5592103'
apa: 'Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M.,
& Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase
delocalization across a single Josephson junction. Zenodo. https://doi.org/10.5281/ZENODO.5592103'
chicago: 'Peruzzo, Matilda, Farid Hassani, Grisha Szep, Andrea Trioni, Elena Redchenko,
Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling
Phase Delocalization across a Single Josephson Junction.” Zenodo, 2021. https://doi.org/10.5281/ZENODO.5592103.'
ieee: 'M. Peruzzo et al., “Geometric superinductance qubits: Controlling
phase delocalization across a single Josephson junction.” Zenodo, 2021.'
ista: 'Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM.
2021. Geometric superinductance qubits: Controlling phase delocalization across
a single Josephson junction, Zenodo, 10.5281/ZENODO.5592103.'
mla: 'Peruzzo, Matilda, et al. Geometric Superinductance Qubits: Controlling
Phase Delocalization across a Single Josephson Junction. Zenodo, 2021, doi:10.5281/ZENODO.5592103.'
short: M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M.
Fink, (2021).
date_created: 2023-05-23T13:42:27Z
date_published: 2021-10-22T00:00:00Z
date_updated: 2023-08-11T10:44:21Z
day: '22'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.5281/ZENODO.5592103
main_file_link:
- open_access: '1'
url: https://doi.org/10.5281/zenodo.5592104
month: '10'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
record:
- id: '9928'
relation: used_in_publication
status: public
status: public
title: 'Geometric superinductance qubits: Controlling phase delocalization across
a single Josephson junction'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10644'
abstract:
- lang: eng
text: The purpose of this application note is to demonstrate a working example of
a superconducting qubit measurement in a Bluefors cryostat using the Keysight
quantum control hardware. Our motivation is twofold. First, we provide pre-qualification
data that the Bluefors cryostat, including filtering and wiring, can support long-lived
qubits. Second, we demonstrate that the Keysight system (controlled using Labber)
provides a straightforward solution to perform these characterization measurements.
This document is intended as a brief guide for starting an experimental platform
for testing superconducting qubits. The setup described here is an immediate jumping
off point for a suite of applications including testing quantum logical gates,
quantum optics with microwaves, or even using the qubit itself as a sensitive
probe of local electromagnetic fields. Qubit measurements rely on high performance
of both the physical sample environment and the measurement electronics. An overview
of the cryogenic system is shown in Figure 1, and an overview of the integration
between the electronics and cryostat (including wiring details) is shown in Figure
2.
alternative_title:
- Bluefors Blog
article_processing_charge: No
author:
- first_name: Russell
full_name: Lake, Russell
last_name: Lake
- first_name: Slawomir
full_name: Simbierowicz, Slawomir
last_name: Simbierowicz
- first_name: Philip
full_name: Krantz, Philip
last_name: Krantz
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: 'Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. The Bluefors Dilution
Refrigerator as an Integrated Quantum Measurement System. Helsinki, Finland:
Bluefors Oy; 2021.'
apa: 'Lake, R., Simbierowicz, S., Krantz, P., Hassani, F., & Fink, J. M. (2021).
The Bluefors dilution refrigerator as an integrated quantum measurement system.
Helsinki, Finland: Bluefors Oy.'
chicago: 'Lake, Russell, Slawomir Simbierowicz, Philip Krantz, Farid Hassani, and
Johannes M Fink. The Bluefors Dilution Refrigerator as an Integrated Quantum
Measurement System. Helsinki, Finland: Bluefors Oy, 2021.'
ieee: 'R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, and J. M. Fink, The Bluefors
dilution refrigerator as an integrated quantum measurement system. Helsinki,
Finland: Bluefors Oy, 2021.'
ista: 'Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. 2021. The Bluefors
dilution refrigerator as an integrated quantum measurement system, Helsinki, Finland:
Bluefors Oy, 9p.'
mla: Lake, Russell, et al. The Bluefors Dilution Refrigerator as an Integrated
Quantum Measurement System. Bluefors Oy, 2021.
short: R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, J.M. Fink, The Bluefors
Dilution Refrigerator as an Integrated Quantum Measurement System, Bluefors Oy,
Helsinki, Finland, 2021.
date_created: 2022-01-19T08:29:57Z
date_published: 2021-04-20T00:00:00Z
date_updated: 2022-01-19T09:11:33Z
day: '20'
department:
- _id: JoFi
keyword:
- Application note
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://bluefors.com/blog/integrated-quantum-measurement-system/
month: '04'
oa: 1
oa_version: Published Version
page: '9'
place: Helsinki, Finland
publication_status: published
publisher: Bluefors Oy
quality_controlled: '1'
status: public
title: The Bluefors dilution refrigerator as an integrated quantum measurement system
type: other_academic_publication
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '10645'
abstract:
- lang: eng
text: "Superconducting qubits have emerged as a highly versatile and useful platform
for quantum technological applications [1]. Bluefors and Zurich Instruments have
supported the growth of this field from the 2010s onwards by providing well-engineered
and reliable measurement infrastructure [2]– [6]. Having a long and stable qubit
lifetime is a critical system property. Therefore, considerable effort has already
gone into measuring qubit energy-relaxation timescales and their fluctuations,
see Refs. [7]–[10] among others. Accurately extracting the statistics of a quantum
device requires users to perform time consuming measurements. One measurement
challenge is that the detection of the state-dependent\r\nresponse of a superconducting
resonator due to a dispersively-coupled qubit requires an inherently low signal
level. Consequently, measurements must be performed using a microwave probe that
contains only a few microwave photons. Improving the signal-to-noise ratio (SNR)
by using near-quantum limited parametric amplifiers as well as the use of optimized
signal processing enabled by efficient room temperature instrumentation help to
reduce measurement time. An empirical observation for fixed frequency transmons
from recent literature is that as the energy-relaxation time \U0001D447\U0001D4471
increases, so do its natural temporal fluctuations [7], [10]. This necessitates
many repeated measurements to understand the statistics (see for example, Ref.
[10]). In addition, as state-of-the-art qubits increase in lifetime, longer\r\nmeasurement
times are expected to obtain accurate statistics. As described below, the scaling
of the widths of the qubit energy-relaxation distributions also reveal clues about
the origin of the energy-relaxation."
alternative_title:
- Bluefors Blog
article_processing_charge: No
author:
- first_name: Slawomir
full_name: Simbierowicz, Slawomir
last_name: Simbierowicz
- first_name: Chunyan
full_name: Shi, Chunyan
last_name: Shi
- first_name: Michele
full_name: Collodo, Michele
last_name: Collodo
- first_name: Moritz
full_name: Kirste, Moritz
last_name: Kirste
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- first_name: Jonas
full_name: Bylander, Jonas
last_name: Bylander
- first_name: Daniel
full_name: Perez Lozano, Daniel
last_name: Perez Lozano
- first_name: Russell
full_name: Lake, Russell
last_name: Lake
citation:
ama: 'Simbierowicz S, Shi C, Collodo M, et al. Qubit Energy-Relaxation Statistics
in the Bluefors Quantum Measurement System. Helsinki, Finland: Bluefors Oy;
2021.'
apa: 'Simbierowicz, S., Shi, C., Collodo, M., Kirste, M., Hassani, F., Fink, J.
M., … Lake, R. (2021). Qubit energy-relaxation statistics in the Bluefors quantum
measurement system. Helsinki, Finland: Bluefors Oy.'
chicago: 'Simbierowicz, Slawomir, Chunyan Shi, Michele Collodo, Moritz Kirste, Farid
Hassani, Johannes M Fink, Jonas Bylander, Daniel Perez Lozano, and Russell Lake.
Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System.
Helsinki, Finland: Bluefors Oy, 2021.'
ieee: 'S. Simbierowicz et al., Qubit energy-relaxation statistics in the
Bluefors quantum measurement system. Helsinki, Finland: Bluefors Oy, 2021.'
ista: 'Simbierowicz S, Shi C, Collodo M, Kirste M, Hassani F, Fink JM, Bylander
J, Perez Lozano D, Lake R. 2021. Qubit energy-relaxation statistics in the Bluefors
quantum measurement system, Helsinki, Finland: Bluefors Oy, 8p.'
mla: Simbierowicz, Slawomir, et al. Qubit Energy-Relaxation Statistics in the
Bluefors Quantum Measurement System. Bluefors Oy, 2021.
short: S. Simbierowicz, C. Shi, M. Collodo, M. Kirste, F. Hassani, J.M. Fink, J.
Bylander, D. Perez Lozano, R. Lake, Qubit Energy-Relaxation Statistics in the
Bluefors Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.
date_created: 2022-01-19T08:41:14Z
date_published: 2021-06-03T00:00:00Z
date_updated: 2022-01-19T09:11:39Z
day: '03'
department:
- _id: JoFi
keyword:
- Application note
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://bluefors.com/blog/application-note-qubit-energy-relaxation-statistics-bluefors-quantum-measurement-system/
month: '06'
oa: 1
oa_version: Published Version
page: '8'
place: Helsinki, Finland
publication_status: published
publisher: Bluefors Oy
quality_controlled: '1'
status: public
title: Qubit energy-relaxation statistics in the Bluefors quantum measurement system
type: other_academic_publication
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '9815'
abstract:
- lang: eng
text: The quantum bits (qubits) on which superconducting quantum computers are based
have energy scales corresponding to photons with GHz frequencies. The energy of
photons in the gigahertz domain is too low to allow transmission through the noisy
room-temperature environment, where the signal would be lost in thermal noise.
Optical photons, on the other hand, have much higher energies, and signals can
be detected using highly efficient single-photon detectors. Transduction from
microwave to optical frequencies is therefore a potential enabling technology
for quantum devices. However, in such a device the optical pump can be a source
of thermal noise and thus degrade the fidelity; the similarity of input microwave
state to the output optical state. In order to investigate the magnitude of this
effect we model the sub-Kelvin thermal behavior of an electro-optic transducer
based on a lithium niobate whispering gallery mode resonator. We find that there
is an optimum power level for a continuous pump, whilst pulsed operation of the
pump increases the fidelity of the conversion.
acknowledgement: NJL is supported by the MBIE Endeavour Fund (UOOX1805) and GL is
by the Julius von Haast Fellowship of New Zealand. SM acknowledges stimulating discussions
with T M Jensen.
article_number: '045005'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Sonia
full_name: Mobassem, Sonia
last_name: Mobassem
- first_name: Nicholas J.
full_name: Lambert, Nicholas J.
last_name: Lambert
- 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: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- first_name: Gerd
full_name: Leuchs, Gerd
last_name: Leuchs
- first_name: Harald G.L.
full_name: Schwefel, Harald G.L.
last_name: Schwefel
citation:
ama: Mobassem S, Lambert NJ, Rueda Sanchez AR, Fink JM, Leuchs G, Schwefel HGL.
Thermal noise in electro-optic devices at cryogenic temperatures. Quantum Science
and Technology. 2021;6(4). doi:10.1088/2058-9565/ac0f36
apa: Mobassem, S., Lambert, N. J., Rueda Sanchez, A. R., Fink, J. M., Leuchs, G.,
& Schwefel, H. G. L. (2021). Thermal noise in electro-optic devices at cryogenic
temperatures. Quantum Science and Technology. IOP Publishing. https://doi.org/10.1088/2058-9565/ac0f36
chicago: Mobassem, Sonia, Nicholas J. Lambert, Alfredo R Rueda Sanchez, Johannes
M Fink, Gerd Leuchs, and Harald G.L. Schwefel. “Thermal Noise in Electro-Optic
Devices at Cryogenic Temperatures.” Quantum Science and Technology. IOP
Publishing, 2021. https://doi.org/10.1088/2058-9565/ac0f36.
ieee: S. Mobassem, N. J. Lambert, A. R. Rueda Sanchez, J. M. Fink, G. Leuchs, and
H. G. L. Schwefel, “Thermal noise in electro-optic devices at cryogenic temperatures,”
Quantum Science and Technology, vol. 6, no. 4. IOP Publishing, 2021.
ista: Mobassem S, Lambert NJ, Rueda Sanchez AR, Fink JM, Leuchs G, Schwefel HGL.
2021. Thermal noise in electro-optic devices at cryogenic temperatures. Quantum
Science and Technology. 6(4), 045005.
mla: Mobassem, Sonia, et al. “Thermal Noise in Electro-Optic Devices at Cryogenic
Temperatures.” Quantum Science and Technology, vol. 6, no. 4, 045005, IOP
Publishing, 2021, doi:10.1088/2058-9565/ac0f36.
short: S. Mobassem, N.J. Lambert, A.R. Rueda Sanchez, J.M. Fink, G. Leuchs, H.G.L.
Schwefel, Quantum Science and Technology 6 (2021).
date_created: 2021-08-08T22:01:25Z
date_published: 2021-07-15T00:00:00Z
date_updated: 2023-10-17T12:54:54Z
day: '15'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1088/2058-9565/ac0f36
external_id:
arxiv:
- '2008.08764'
isi:
- '000673081500001'
file:
- access_level: open_access
checksum: b15c2c228487a75002c3b52d56f23d5c
content_type: application/pdf
creator: cchlebak
date_created: 2021-08-09T12:23:13Z
date_updated: 2021-08-09T12:23:13Z
file_id: '9836'
file_name: 2021_QuantumScienceTechnology_Mobassem.pdf
file_size: 2366118
relation: main_file
file_date_updated: 2021-08-09T12:23:13Z
has_accepted_license: '1'
intvolume: ' 6'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication: Quantum Science and Technology
publication_identifier:
eissn:
- 2058-9565
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Thermal noise in electro-optic devices at cryogenic temperatures
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: 6
year: '2021'
...
---
_id: '9928'
abstract:
- lang: eng
text: There are two elementary superconducting qubit types that derive directly
from the quantum harmonic oscillator. In one, the inductor is replaced by a nonlinear
Josephson junction to realize the widely used charge qubits with a compact phase
variable and a discrete charge wave function. In the other, the junction is added
in parallel, which gives rise to an extended phase variable, continuous wave functions,
and a rich energy-level structure due to the loop topology. While the corresponding
rf superconducting quantum interference device Hamiltonian was introduced as a
quadratic quasi-one-dimensional potential approximation to describe the fluxonium
qubit implemented with long Josephson-junction arrays, in this work we implement
it directly using a linear superinductor formed by a single uninterrupted aluminum
wire. We present a large variety of qubits, all stemming from the same circuit
but with drastically different characteristic energy scales. This includes flux
and fluxonium qubits but also the recently introduced quasicharge qubit with strongly
enhanced zero-point phase fluctuations and a heavily suppressed flux dispersion.
The use of a geometric inductor results in high reproducibility of the inductive
energy as guaranteed by top-down lithography—a key ingredient for intrinsically
protected superconducting qubits.
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
acknowledgement: We thank W. Hughes for analytic and numerical modeling during the
early stages of this work, J. Koch for discussions and support with the scqubits
package, R. Sett, P. Zielinski, and L. Drmic for software development, and G. Katsaros
for equipment support, as well as the MIBA workshop and the Institute of Science
and Technology Austria nanofabrication facility. We thank I. Pop, S. Deleglise,
and E. Flurin for discussions. This work was supported by a NOMIS Foundation research
grant, the Austrian Science Fund (FWF) through BeyondC (F7105), and IST Austria.
M.P. is the recipient of a Pöttinger scholarship at IST Austria. E.R. is the recipient
of a DOC fellowship of the Austrian Academy of Sciences at IST Austria.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Matilda
full_name: Peruzzo, Matilda
id: 3F920B30-F248-11E8-B48F-1D18A9856A87
last_name: Peruzzo
orcid: 0000-0002-3415-4628
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- first_name: Gregory
full_name: Szep, Gregory
last_name: Szep
- first_name: Andrea
full_name: Trioni, Andrea
id: 42F71B44-F248-11E8-B48F-1D18A9856A87
last_name: Trioni
- first_name: Elena
full_name: Redchenko, Elena
id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
last_name: Redchenko
- first_name: Martin
full_name: Zemlicka, Martin
id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
last_name: Zemlicka
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: 'Peruzzo M, Hassani F, Szep G, et al. Geometric superinductance qubits: Controlling
phase delocalization across a single Josephson junction. PRX Quantum. 2021;2(4):040341.
doi:10.1103/PRXQuantum.2.040341'
apa: 'Peruzzo, M., Hassani, F., Szep, G., Trioni, A., Redchenko, E., Zemlicka, M.,
& Fink, J. M. (2021). Geometric superinductance qubits: Controlling phase
delocalization across a single Josephson junction. PRX Quantum. American
Physical Society. https://doi.org/10.1103/PRXQuantum.2.040341'
chicago: 'Peruzzo, Matilda, Farid Hassani, Gregory Szep, Andrea Trioni, Elena Redchenko,
Martin Zemlicka, and Johannes M Fink. “Geometric Superinductance Qubits: Controlling
Phase Delocalization across a Single Josephson Junction.” PRX Quantum.
American Physical Society, 2021. https://doi.org/10.1103/PRXQuantum.2.040341.'
ieee: 'M. Peruzzo et al., “Geometric superinductance qubits: Controlling
phase delocalization across a single Josephson junction,” PRX Quantum,
vol. 2, no. 4. American Physical Society, p. 040341, 2021.'
ista: 'Peruzzo M, Hassani F, Szep G, Trioni A, Redchenko E, Zemlicka M, Fink JM.
2021. Geometric superinductance qubits: Controlling phase delocalization across
a single Josephson junction. PRX Quantum. 2(4), 040341.'
mla: 'Peruzzo, Matilda, et al. “Geometric Superinductance Qubits: Controlling Phase
Delocalization across a Single Josephson Junction.” PRX Quantum, vol. 2,
no. 4, American Physical Society, 2021, p. 040341, doi:10.1103/PRXQuantum.2.040341.'
short: M. Peruzzo, F. Hassani, G. Szep, A. Trioni, E. Redchenko, M. Zemlicka, J.M.
Fink, PRX Quantum 2 (2021) 040341.
date_created: 2021-08-17T08:14:18Z
date_published: 2021-11-24T00:00:00Z
date_updated: 2023-09-07T13:31:22Z
day: '24'
ddc:
- '530'
department:
- _id: JoFi
- _id: NanoFab
- _id: M-Shop
doi: 10.1103/PRXQuantum.2.040341
ec_funded: 1
external_id:
arxiv:
- '2106.05882'
isi:
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checksum: 36eb41ea43d8ca22b0efab12419e4eb2
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file_name: 2021_PRXQuantum_Peruzzo.pdf
file_size: 4247422
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success: 1
file_date_updated: 2022-01-18T11:29:33Z
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intvolume: ' 2'
isi: 1
issue: '4'
keyword:
- quantum physics
- mesoscale and nanoscale physics
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: '040341'
project:
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call_identifier: FWF
grant_number: F07105
name: Integrating superconducting quantum circuits
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call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
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name: Hybrid Semiconductor - Superconductor Quantum Devices
publication: PRX Quantum
publication_identifier:
eissn:
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publication_status: published
publisher: American Physical Society
quality_controlled: '1'
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relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'Geometric superinductance qubits: Controlling phase delocalization across
a single Josephson junction'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 2
year: '2021'
...
---
_id: '7910'
abstract:
- lang: eng
text: Quantum illumination uses entangled signal-idler photon pairs to boost the
detection efficiency of low-reflectivity objects in environments with bright thermal
noise. Its advantage is particularly evident at low signal powers, a promising
feature for applications such as noninvasive biomedical scanning or low-power
short-range radar. Here, we experimentally investigate the concept of quantum
illumination at microwave frequencies. We generate entangled fields to illuminate
a room-temperature object at a distance of 1 m in a free-space detection setup.
We implement a digital phase-conjugate receiver based on linear quadrature measurements
that outperforms a symmetric classical noise radar in the same conditions, despite
the entanglement-breaking signal path. Starting from experimental data, we also
simulate the case of perfect idler photon number detection, which results in a
quantum advantage compared with the relative classical benchmark. Our results
highlight the opportunities and challenges in the way toward a first room-temperature
application of microwave quantum circuits.
article_number: eabb0451
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Shabir
full_name: Barzanjeh, Shabir
id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
last_name: Barzanjeh
orcid: 0000-0003-0415-1423
- first_name: S.
full_name: Pirandola, S.
last_name: Pirandola
- first_name: D
full_name: Vitali, D
last_name: Vitali
- 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: Barzanjeh S, Pirandola S, Vitali D, Fink JM. Microwave quantum illumination
using a digital receiver. Science Advances. 2020;6(19). doi:10.1126/sciadv.abb0451
apa: Barzanjeh, S., Pirandola, S., Vitali, D., & Fink, J. M. (2020). Microwave
quantum illumination using a digital receiver. Science Advances. AAAS.
https://doi.org/10.1126/sciadv.abb0451
chicago: Barzanjeh, Shabir, S. Pirandola, D Vitali, and Johannes M Fink. “Microwave
Quantum Illumination Using a Digital Receiver.” Science Advances. AAAS,
2020. https://doi.org/10.1126/sciadv.abb0451.
ieee: S. Barzanjeh, S. Pirandola, D. Vitali, and J. M. Fink, “Microwave quantum
illumination using a digital receiver,” Science Advances, vol. 6, no. 19.
AAAS, 2020.
ista: Barzanjeh S, Pirandola S, Vitali D, Fink JM. 2020. Microwave quantum illumination
using a digital receiver. Science Advances. 6(19), eabb0451.
mla: Barzanjeh, Shabir, et al. “Microwave Quantum Illumination Using a Digital Receiver.”
Science Advances, vol. 6, no. 19, eabb0451, AAAS, 2020, doi:10.1126/sciadv.abb0451.
short: S. Barzanjeh, S. Pirandola, D. Vitali, J.M. Fink, Science Advances 6 (2020).
date_created: 2020-05-31T22:00:49Z
date_published: 2020-05-06T00:00:00Z
date_updated: 2024-09-10T12:23:52Z
day: '06'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1126/sciadv.abb0451
ec_funded: 1
external_id:
arxiv:
- '1908.03058'
isi:
- '000531171100045'
file:
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checksum: 16fa61cc1951b444ee74c07188cda9da
content_type: application/pdf
creator: dernst
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date_updated: 2020-07-14T12:48:05Z
file_id: '7913'
file_name: 2020_ScienceAdvances_Barzanjeh.pdf
file_size: 795822
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file_date_updated: 2020-07-14T12:48:05Z
has_accepted_license: '1'
intvolume: ' 6'
isi: 1
issue: '19'
language:
- iso: eng
month: '05'
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: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '862644'
name: Quantum readout techniques and technologies
- _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: 257EB838-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '732894'
name: Hybrid Optomechanical Technologies
- _id: 26927A52-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: F07105
name: Integrating superconducting quantum circuits
publication: Science Advances
publication_identifier:
eissn:
- '23752548'
publication_status: published
publisher: AAAS
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/scientists-demonstrate-quantum-radar-prototype/
record:
- id: '9001'
relation: later_version
status: public
scopus_import: '1'
status: public
title: Microwave quantum illumination using a digital receiver
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: 6
year: '2020'
...