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Decoherence of a qubit by non-Gaussian noise at an arbitrary working point

J. Bergli, Y. M. Galperin, B. L. Altshuler

cond-mat.supr-conarXiv:cond-mat/0603575

Abstract

The decoherence of a qubit due to a classical non-Gaussian noise with correlation time longer than the decoherence time is discussed for arbitrary working points of the qubit. A method is developed that allows an exact formula for the phase memory functional in the presence of independent random telegraph noise sources to be derived.

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