Dynamics of measurement-induced non-locality and geometric discord with initial system-environment correlations |
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Authors: | Xiao Rui-Lin Xiao Xing and Zhong Wo-Jun |
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Institution: | [1]College of Physics and Electronics, Gannan Normal University, Ganzhou 341000, China [2]Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou 341000, China |
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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. |
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Keywords: | geometric measure of discord measurement-induced non-locality initial correlations |
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