arXiv:1011.4117 [quant-ph]AbstractReferencesReviewsResources
Information Flow, Non-Markovianity and Geometric Phases
S. L. Wu, X. L. Huang, L. C. Wang, X. X. Yi
Published 2010-11-18Version 1
Geometric phases and information flows of a two-level system coupled to its environment are calculated and analyzed. The information flow is defined as a cumulant of changes in trace distance between two quantum states, which is similar to the measure for non-Markovianity given by Breuer. We obtain an analytic relation between the geometric phase and the information flow for pure initial states, and a numerical result for mixed initial states. The geometric phase behaves differently depending on whether there are information flows back to the two-level system from its environment.
Comments: 12 pages, 11 figures
Journal: Phys. Rev. A 82, 052111 (2010)
Categories: quant-ph
Tags: journal article
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