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Article overview
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Decoherence and the Nature of System-Environment Correlations | A. Pernice
; W. T. Strunz
; | Date: |
1 Sep 2011 | Abstract: | We investigate system-environment correlations based on the exact dynamics of
a qubit and its environment in the framework of pure decoherence (phase
damping). We focus on the relation of decoherence and the build-up of
system-reservoir entanglement. In the commonly employed regime where the qubit
dynamics can be described by a Markov master equation of Lindblad type, we find
that decoherence is complete while the total state is still separable - no
entanglement is involved. In general, both "separable" and "entangling"
decoherence occurs, depending on temperature and initial qubit state. Moreover,
we find situations where classical and quantum correlations periodically
alternate as a function of time in the regime of low temperatures. | Source: | arXiv, 1109.0147 | Services: | Forum | Review | PDF | Favorites |
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