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Models of Short-Time Qubit Decoherence

Dmitry Solenov·Vladimir Privman
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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.

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Dmitry Solenov, Vladimir Privman. 2004-03-19. Models of Short-Time Qubit Decoherence. https://doi.org/10.1117/12.541458

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