Abstract
A generic behavior of quantum correlations during any quantum process taking place in a noisy environment is that they are non-increasing. We have shown that mitigation of these decreases providing relative enhancements in correlations is possible by means of quantum memory channels which model correlated environmental quantum noises. For two-qubit systems subject to mixtures of two-use actions of different decoherence channels we point out that improvement in correlations can be achieved in such way that the input-output fidelity is also as high as possible. These make it possible to create the optimal conditions in realizing any quantum communication task in a noisy environment.
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This work was supported in part by the Scientific and Technological Research Council of Turkey (TUBITAK).
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Duran, D., Verçin, A. Controlling the loss of quantum correlations via quantum memory channels. Quantum Inf Process 17, 164 (2018). https://doi.org/10.1007/s11128-018-1935-5
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DOI: https://doi.org/10.1007/s11128-018-1935-5