arXiv:cond-mat/0403510 · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Models of short-time qubit decoherence

Dmitry Solenov, Vladimir Privman

Published Aug 24, 2004• 5 citations

Abstract

We compare approaches to evaluation of decoherence at low temperatures in two-state quantum systems weakly coupled to the environment. By analyzing an exactly solvable model, we demonstrate that a non-Markovian approximation scheme yields good quality estimates of the reduced density matrix for time scales appropriate for evaluation of quantum computing designs.

DOI: 10.1117/12.541458

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