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Dynamics of measurement-induced nonlocality under decoherence

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Abstract

Measurement-induced nonlocality (MIN)—captures nonlocal effects of a quantum state due to local von Neumann projective measurements, is a bona-fide measure of quantum correlation between constituents of a composite system. In this paper, we study the dynamical behavior of entanglement (measured by concurrence), Hilbert–Schmidt MIN and fidelity-based MIN (F-MIN) under local noisy channels such as hybrid (consists of bit flip, phase flip and bit-phase flip), generalized amplitude damping (GAD) and depolarizing channels for the initial Bell diagonal state. We observed that while sudden death of entanglement occurs in hybrid and GAD channels, MIN and F-MIN are more robust against such noises. Finally, we demonstrate the revival of MIN and F-MIN after a dark point of time against depolarizing noise.

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Authors and Affiliations

  1. Department of Physics, National Institute of Technology, Tiruchirappalli, India

    R. Muthuganesan & R. Sankaranarayanan

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  1. R. Muthuganesan
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  2. R. Sankaranarayanan
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Correspondence to R. Muthuganesan.

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Muthuganesan, R., Sankaranarayanan, R. Dynamics of measurement-induced nonlocality under decoherence. Quantum Inf Process 17, 305 (2018). https://doi.org/10.1007/s11128-018-2073-9

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