The Dynamics of Quantum Correlations in Mixed Classical Environments

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• 作者：Mohammad Javed ; Salman Khan ; Sayed Arif Ullah
• 关键词：entanglement ; quantum discord ; decoherence
• 刊名：Journal of Russian Laser Research
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：37
• 期：6
• 页码：562-571
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Optics, Lasers, Photonics, Optical Devices; Microwaves, RF and Optical Engineering;
• 出版者：Springer US
• ISSN：1573-8760
• 卷排序：37

文摘

We present a comparative study of the dynamics of entanglement and quantum discord in a bipartite system in the presence of mixed classical noises. In particular, the joint effects of three different types of classical noises, namely, random telegraphic noise (RTN), Ornstein–Uhlenbeck noise (OU), and static noise, are studied by combining them in two different ways. In each case, one marginal system is coupled with random telegraphic noise, and the other marginal system is coupled with either OU or static noise. We make a comparison between the behaviors of both correlations in the two setups. In the weak coupling regime, the qualitative behavior of entanglement is unaffected by switching the coupling of only one marginal system from OU to static noise, and vice versa. However, the behavior of quantum discord strongly depends on whether it is coupled with OU or static noise. On the other hand, in the strong coupling regime, the static noise is more fatal to the survival of both correlations as compared to the other two noises.