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The Dynamics of Quantum Correlations in Mixed Classical Environments

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Journal of Russian Laser Research Aims and scope

Abstract

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.

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Authors and Affiliations

  1. Department of Physics, University of Malakand, Chakdara Dir, Pakistan

    Mohammad Javed & Sayed Arif Ullah

  2. Department of Physics, COMSATS Institute of Information Technology, Chak Shahzad, Islamabad, Pakistan

    Salman Khan

Authors
  1. Mohammad Javed
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  2. Salman Khan
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  3. Sayed Arif Ullah
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Correspondence to Salman Khan.

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Javed, M., Khan, S. & Ullah, S.A. The Dynamics of Quantum Correlations in Mixed Classical Environments. J Russ Laser Res 37, 562–571 (2016). https://doi.org/10.1007/s10946-016-9608-2

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  • DOI: https://doi.org/10.1007/s10946-016-9608-2

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