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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 83, Issue 2, Pages 93–96 (Mi jetpl1233)  
QUANTUM INFORMATION SCIENCE

Dephasing of Josephson qubits close to optimal points

S. V. Syzranovab, Yu. Makhlinab

a Moscow Institute of Physics and Technology
b Landau Institute for Theoretical Physics RAS
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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.
Received: 22.12.2005
English version:
Journal of Experimental and Theoretical Physics Letters, 2006, Volume 83, Issue 2, Pages 83–86
DOI: https://doi.org/10.1134/S0021364006020093
Bibliographic databases:
Document Type: Article
PACS: 03.65.Yz, 03.67.Pp
Language: English
Citation: S. V. Syzranov, Yu. Makhlin, “Dephasing of Josephson qubits close to optimal points”, Pis'ma v Zh. Èksper. Teoret. Fiz., 83:2 (2006), 93–96; JETP Letters, 83:2 (2006), 83–86
Citation in format AMSBIB
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\pages 93--96
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