Damped Quantum Interference using Stochastic Calculus

Details Damped Quantum Interference using Stochastic Calculus Damped Quantum Interference using Stochastic Calculus

2002-08-28

arxiv.org/abs/quant-ph/0208176v1

J. Mod. Opt. 50, 975 (2003)

Physics

Quantum Physics

7 pages, 1 ps figure

Scientific paper

It is shown how the phase-damping master equation, either in Markovian and nonMarkovian regimes, can be obtained as an averaged random unitary evolution. This, apart from offering a common mathematical setup for both regimes, enables us to solve this equation in a straightforward manner just by solving the Schrodinger equation and taking the stochastic expectation value of its solutions after an adequate modification. Using the linear entropy as a figure of merit (basically the loss of quantum coherence) the distinction of four kinds of environments is suggested.

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