Reservoir-Mediated Quantum Correlations in Non-Hermitian Optical System.
Reservoir-Mediated Quantum Correlations in Non-Hermitian Optical System.
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DOI：
10.1103/physrevlett.124.030401
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发表时间：
2019-03
影响因子：
8.6
通讯作者：
Wanxia Cao;Xingda Lu;Xin Meng;Jian Sun-;Heng Shen;Yanhong Xiao
中科院分区：
文献类型：
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作者：
Wanxia Cao;Xingda Lu;Xin Meng;Jian Sun-;Heng Shen;Yanhong Xiao
非厄米物理系统的最新进展导致了许多新的光学现象和应用。这样的系统通常涉及与环境耗散耦合相关的增益和损耗，因此有趣的量子现象经常被淘汰，使大多数实现成为经典。在这里，相反，我们建议采用耗散耦合，使量子关联。特别是，两个遥远的光学通道被明智地设计成耦合到一个共同的水库环境，并与之交换信息，在反奇偶时间对称设置的热，但相干的原子。我们实现了一个非厄米非线性相敏参量过程，其中原子的运动导致两个远距离光束之间的量子关联处于连续相位。这封信开始了一个新的路线，探索非厄米量子现象的桥梁领域的原子物理学，非厄米光学，量子信息和油藏工程。潜在的应用包括新的量子光源，量子信息处理和传感，以及相关多体系统的推广。
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.