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We examine the validity of the parity-time ( PT )-symmetric operation in protecting quantum state and entanglement in the non-zero temperature environment. Special attention is paid to the dependence of… Click to show full abstract
We examine the validity of the parity-time ( PT )-symmetric operation in protecting quantum state and entanglement in the non-zero temperature environment. Special attention is paid to the dependence of quantum fidelity and entanglement on the temperature. In particular, by solving the master equation, we get the exact analytical or numerical simulation expressions of the explicit formulas of protection, showing explicitly that PT -symmetric operation does indeed help in protecting quantum state from finite temperature decoherence.
Journal Title: Laser Physics
Year Published: 2021
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