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Laser Physics

Enhancing coherence by local parity-time symmetric operation under the non-Markovian environment

Yang Leng

Published Aug 20, 2024• 0 citations
Publisher

Abstract

Abstract The dynamic behavior of the relative entropy of coherence for a two-level system is systematically investigated within non-Markovian environment. We derive the exact expressions of relative entropy quantifying coherence for an exactly solving model consisting of single qubit interacting with independent structured reservoir. By employing local non-Hermitian operation, i.e. parity-time ( PT ) symmetric operation, we show that the vanished quantum coherence can be effectively restored under the non-Markovian regimes. Furthermore, the freezing phenomenon of the coherence can be detected by using the optimal PT symmetric operation strength within the non-Markovian environments.

DOI
10.1088/1555-6611/ad6d56

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