Dephasing of Josephson qubits close to optimal points
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
Decoherence of Josephson qubits can be substantially reduced by tuning their parameters to optimal operation points, with only quadratic coupling to fluctuations. We analyze dephasing due to 1/f noise for a two-level system, detuned from an optimal point, i.e., the crossover to the linear-coupling regime, both for free induction decay and for spin-echo experiments. Influence of several noise sources is also discussed.
Cite
@article{arxiv.cond-mat/0512701,
title = {Dephasing of Josephson qubits close to optimal points},
author = {S. V. Syzranov and Yu. Makhlin},
journal= {arXiv preprint arXiv:cond-mat/0512701},
year = {2007}
}
Comments
4 pages, 1 figure, accepted for publication in JETP Lett