Jiao Ya-Feng, Zhang Sheng-Dian, Zhang Yan-Lei, Miranowicz Adam, Kuang Le-Man, Jing Hui
Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081, China.
CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.
Phys Rev Lett. 2020 Oct 2;125(14):143605. doi: 10.1103/PhysRevLett.125.143605.
We propose how to achieve nonreciprocal quantum entanglement of light and motion and reveal its counterintuitive robustness against random losses. We find that by splitting the counterpropagating lights of a spinning resonator via the Sagnac effect, photons and phonons can be entangled strongly in a chosen direction but fully uncorrelated in the other. This makes it possible both to realize quantum nonreciprocity even in the absence of any classical nonreciprocity and also to achieve significant entanglement revival against backscattering losses in practical devices. Our work provides a way to protect and engineer quantum resources by utilizing diverse nonreciprocal devices, for building noise-tolerant quantum processors, realizing chiral networks, and backaction-immune quantum sensors.
我们提出了如何实现光与运动的非互易量子纠缠，并揭示了其对随机损耗的反直觉鲁棒性。我们发现，通过萨格纳克效应分离旋转谐振器的反向传播光，光子和声子可以在选定方向上强烈纠缠，但在另一个方向上完全不相关。这使得即使在没有任何经典非互易性的情况下也能实现量子非互易性，并且在实际设备中针对背向散射损耗实现显著的纠缠复兴。我们的工作提供了一种通过利用各种非互易器件来保护和设计量子资源的方法，用于构建抗噪声量子处理器、实现手性网络以及无反作用量子传感器。
