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arXiv · 1201.1949

Dynamics of Geometric Discord and Measurement-Induced Nonlocality at Finite Temperature

Guo-Feng Zhang·Heng Fan·Ai-Ling Ji·Wu-Ming Liu
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Abstract

By using geometric measure of discord (\texttt{GMOD})[Phys. Rev. Lett, 105, 109502 (2010)] and measurement-induced nonlocality (\texttt{MIN})[Phys. Rev. Lett, 106, 120401 (2011)], we investigate quantum correlation of a pair of two-level systems, each of which is interacting with a reservoir at finite temperature $T$. We show that, for a broad class of states of the system, \texttt{GMOD} and \texttt{MIN} can endure sudden death, and there is no asymptotic decay for \texttt{MIN} while asymptotic decay exists for \texttt{GMOD}. We also give the dynamics of \texttt{GMOD} and \texttt{MIN} with respect to the temperature and illustrate their different characteristics.

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Guo-Feng Zhang, Heng Fan, Ai-Ling Ji, Wu-Ming Liu. 2012-01-10. Dynamics of Geometric Discord and Measurement-Induced Nonlocality at Finite Temperature. https://doi.org/10.1140/epjd%2Fe2011-20463-x

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