---
_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
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'
...