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@ARTICLE{Krause:906955,
author = {Krause, J. and Dickel, C. and Vaal, E. and Vielmetter, M.
and Feng, J. and Bounds, R. and Catelani, G. and Fink, J. M.
and Ando, Yoichi},
title = {{M}agnetic {F}ield {R}esilience of {T}hree-{D}imensional
{T}ransmons with {T}hin-{F}ilm {A}l/{A}l{O} x / {A}l
{J}osephson {J}unctions {A}pproaching 1 {T}},
journal = {Physical review applied},
volume = {17},
number = {3},
issn = {2331-7019},
address = {College Park, Md. [u.a.]},
publisher = {American Physical Society},
reportid = {FZJ-2022-01773},
pages = {034032},
year = {2022},
abstract = {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.},
cin = {PGI-11},
ddc = {530},
cid = {I:(DE-Juel1)PGI-11-20170113},
pnm = {5221 - Advanced Solid-State Qubits and Qubit Systems
(POF4-522)},
pid = {G:(DE-HGF)POF4-5221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000770371400003},
doi = {10.1103/PhysRevApplied.17.034032},
url = {https://juser.fz-juelich.de/record/906955},
}