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Open Quantum Systems Decoherence

Protecting coherence in the non-Hermitian two-level system

arXiv
Authors: Wei-Chen Wang, Mao-Fa Fang

Year

2016

Paper ID

41581

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

We have constructed a non-Hermitian two-level system (a PT -symmetric system) in dissipative environments, and investigated the quantum coherence in the non-Hermitian two-level system. Our results show that, quantum coherence can be created by PT -symmetric systems, even if the initial state of the twolevel system is incoherent state. Even though two-level system is interacted with dissipative environments, the quantum coherence exhibits a long-lived revival, and can be protected. We find that the two-level system can obtain more coherence with the coupling strength Ω increases. And we should point out that the PT -symmetric system can be regarded as a good candidate system for creation of the long-lived quantum coherence in dissipative environments.

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  • We have constructed a non-Hermitian two-level system (a PT -symmetric system) in dissipative environments, and investigated the quantum coherence in the non-Hermitian two-level...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1612.08339 [2] arXiv https://arxiv.org/abs/1612.08339 [3] Publisher https://arxiv.org/abs/1612.08339

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