Quantum dynamics in nonequilibrium environments

Details Quantum dynamics in nonequilibrium environments Quantum dynamics in nonequilibrium environments

2008-04-30

arxiv.org/abs/0804.4869v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 7 figures; significantly expanded version

Scientific paper

10.1103/PhysRevA.78.032105

We present a formalism for studying the behaviour of quantum systems coupled to nonequilibrium environments exhibiting nonGaussian fluctuations. We discuss the role of a qubit as a detector of the statistics of environmental fluctuations, as well as nonMarkovian effects in both weak and strong coupling limits. We also discuss the differences between the influences of classical and quantum environments. As examples of the application of this formalism we study the dephasing and relaxation of a charge qubit coupled to nonequillibrium electron transport through single and double quantum dots.

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