Dynamics of measurement-induced non-locality and geometric discord with initial system–environment correlations

doi:10.1088/1674-1056/22/8/080306

Abstract We analyze the dynamics of geometric measure of discord (GMOD) and measurement-induced non-locality (MIN) in the presence of initial system-reservoir correlations without Born and Markov approximation. Although the initial system-environment states have the same reduced density matrices for both the system and environment, the effects of different initial system-environment correlations have been shown to fundamentally alter the time evolution of GMOD and MIN between two quantum systems in both Markovian and non-Markovian regimes. In general, both GMOD and MIN experience a sudden increase for initially quantum-correlated states, and a sudden decrease for classical-correlated states before they reach the same stationary values with initially factorized states.

Keywords: geometric measure of discord measurement-induced non-locality initial correlations

Received: 16 December 2012
Revised: 26 February 2013
Accepted manuscript online:

PACS:	03.67.Ud
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)
	03.65.Vf	(Phases: geometric; dynamic or topological)

Fund: Project supported by the Special Funds of the National Natural Science Foundation of China (Grant Nos. 11247006 and 11247207), the Scientific Research Foundation of Jiangxi Provincial Education Department (Grant Nos. GJJ12355 and GJJ13651), and the Natural Science Foundation of Jiangxi Province, China (Grant Nos. 20122BAB212004 and 20132BAB212008).

Corresponding Authors: Xiao Xing
E-mail: xiaoxing1121@gmail.com

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Xiao Rui-Lin (肖瑞林), Xiao Xing (肖兴), Zhong Wo-Jun (钟握军) Dynamics of measurement-induced non-locality and geometric discord with initial system–environment correlations 2013 Chin. Phys. B 22 080306

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Dynamics of measurement-induced non-locality and geometric discord with initial system–environment correlations

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