Reservoir-Mediated Quantum Correlations in Non-Hermitian Optical System.,Physical Review Letters

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Reservoir-Mediated Quantum Correlations in Non-Hermitian Optical System.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-01-24 , DOI: 10.1103/physrevlett.124.030401
Wanxia Cao ₁ , Xingda Lu ₁ , Xin Meng ₁ , Jian Sun ₁ , Heng Shen ₂ , Yanhong Xiao _{1,

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Affiliation

Recent advances in non-Hermitian physical systems have led to numerous novel optical phenomena and applications. Such systems typically involve gain and loss associated with dissipative coupling to the environment, hence interesting quantum phenomena are often washed out, rendering most realizations classical. Here, in contrast, we propose to employ dissipative coupling to enable quantum correlations. In particular, two distant optical channels are judiciously designed to couple to and exchange information with a common reservoir environment, under an anti-parity-time-symmetric setting of hot but coherent atoms. We realize a non-Hermitian nonlinear phase sensitive parametric process, where atomic motion leads to quantum correlations between two distant light beams in the symmetry-unbroken phase. This Letter starts a new route to exploring the non-Hermitian quantum phenomena by bridging the fields of atomic physics, non-Hermitian optics, quantum information, and reservoir engineering. Potential applications include novel quantum light sources, quantum information processing and sensing, and generalization to correlated many-body systems.

中文翻译：

非Hermitian光学系统中储层介导的量子相关性。

非赫米特物理系统的最新进展导致了许多新颖的光学现象和应用。这样的系统通常涉及与环境的耗散耦合相关的增益和损耗，因此通常会淘汰有趣的量子现象，从而使大多数实现成为经典。相反，在这里，我们建议采用耗散耦合来实现量子相关。特别是，在热但相干原子的反奇偶时间对称设置下，明智地设计了两个遥远的光通道，以耦合到公共储层环境并与它们交换信息。我们实现了一个非Hermitian非线性相位敏感参数化过程，其中原子运动导致两个远距离光束在对称不间断相位之间产生量子相关性。这封信通过桥接原子物理学，非赫米特光学，量子信息和储层工程领域，开辟了一条探索非赫米特量子现象的新途径。潜在的应用包括新型量子光源，量子信息处理和传感，以及对相关多体系统的推广。

更新日期：2020-01-23

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