Decoherence in a nonequilibrium environment

Details Decoherence in a nonequilibrium environment Decoherence in a nonequilibrium environment

2010-04-22

arxiv.org/abs/1004.3921v2

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

We consider a quantum harmonic oscillator coupled to a general nonequilibrium environment. We show that the decoherence factor can be expressed in terms of a measurable effective temperature, defined via a generalized fluctuation-dissipation relation. We further propose a simple experimental scheme to determine the time-dependent effective temperature in a linear Paul trap with engineered reservoirs. Our formalism allows quantitative description of nonequilibrium decoherence in the presence of an arbitrary number of non-Markovian noise sources in a unified manner.

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