Simple Non-Markovian Microscopic Models for the Depolarizing Channel of a Single Qubit

Abstract

The archetypal one-qubit noisy channels ---depolarizing, phase-damping and amplitude-damping channels--- describe both Markovian and non-Markovian evolution. Simple microscopic models for the depolarizing channel, both classical and quantum, are considered. Microscopic models which describe phase damping and amplitude damping channels are briefly reviewed.

13 pages, 2 figures. Title corrected. Paper rewritten. Added references. Some typos and errors corrected. Author added

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