% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Herrig:903744,
author = {Herrig, Tobias and Riwar, Roman},
title = {{C}ooper-pair transistor as a minimal topological quantum
circuit},
journal = {Physical review research},
volume = {4},
number = {1},
issn = {2643-1564},
address = {College Park, MD},
publisher = {APS},
reportid = {FZJ-2021-05384},
pages = {013038},
year = {2022},
abstract = {The outlook of protected quantum computing spurred enormous
progress in the search for topological materials, sustaining
a continued race to find the most experimentally feasible
platform. Here we show that one of the simplest quantum
circuits, the Cooper-pair transistor, exhibits a nontrivial
Chern number which has not yet been discussed, in spite of
the exhaustive existing literature. Surprisingly, the
resulting quantized current response is robust with respect
to a large number of external perturbations, most notably
low-frequency charge noise and quasiparticle poisoning.
Moreover, the fact that the higher bands experience
crossings with higher topological charges leads to all the
bands having the same Chern number, such that there is no
restriction to stay close to the ground state. Remaining
small perturbations are investigated based on a generic
master equation approach. Finally, we discuss a feasible
protocol to measure the quantized current.},
cin = {PGI-2},
ddc = {530},
cid = {I:(DE-Juel1)PGI-2-20110106},
pnm = {5222 - Exploratory Qubits (POF4-522)},
pid = {G:(DE-HGF)POF4-5222},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000759216100004},
doi = {10.1103/PhysRevResearch.4.013038},
url = {https://juser.fz-juelich.de/record/903744},
}