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@ARTICLE{Riwar:819401,
author = {Riwar, Roman and Hosseinkhani, A. and Burkhart, L. D. and
Gao, Y. Y. and Schoelkopf, R. J. and Glazman, L. I. and
Catelani, G.},
title = {{N}ormal-metal quasiparticle traps for superconducting
qubits},
journal = {Physical review / B},
volume = {94},
number = {10},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2016-05089},
pages = {104516},
year = {2016},
abstract = {The presence of quasiparticles in superconducting qubits
emerges as an intrinsic constraint on their coherence. While
it is difficult to prevent the generation of quasiparticles,
keeping them away from active elements of the qubit provides
a viable way of improving the device performance. Here we
develop theoretically and validate experimentally a model
for the effect of a single small trap on the dynamics of the
excess quasiparticles injected in a transmon-type qubit. The
model allows one to evaluate the time it takes to evacuate
the injected quasiparticles from the transmon as a function
of trap parameters. With the increase of the trap size, this
time decreases monotonically, saturating at the level
determined by the quasiparticles diffusion constant and the
qubit geometry. We determine the characteristic trap size
needed for the relaxation time to approach that saturation
value.},
cin = {PGI-2},
ddc = {530},
cid = {I:(DE-Juel1)PGI-2-20110106},
pnm = {144 - Controlling Collective States (POF3-144)},
pid = {G:(DE-HGF)POF3-144},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000383858800002},
doi = {10.1103/PhysRevB.94.104516},
url = {https://juser.fz-juelich.de/record/819401},
}