Jing Yu-Wei
Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China.
Sci Rep. 2022 Apr 7;12(1):5844. doi: 10.1038/s41598-022-09626-7.
We propose a scheme to realize a four-port quantum optical circulator for critical coupling of a spinning Kerr resonator to two tapered fibers. Its nonreciprocal effect arises from the Fizeau drag induced splitting of the resonance frequencies of the two counter-travelling optical modes. The transmitted photons exhibit direction dependent quantum correlations and nonreciprocal photon blockade occurs for photons transferred between the two fibers. Moreover, the quantum optical circulator is robust against the back scattering induced by intermodal coupling between counter-travelling optical modes. The present quantum optical circulator has significant potential as an elementary cell in chiral quantum information processing without magnetic field.
我们提出了一种方案，用于实现一个四端口量子光学环行器，以实现自旋克尔谐振器与两根锥形光纤的临界耦合。其非互易效应源于菲佐拖曳引起的两个反向传播光学模式的共振频率分裂。透射光子表现出方向依赖的量子关联，并且在两根光纤之间传输的光子会出现非互易光子阻塞。此外，该量子光学环行器对于反向传播光学模式之间的模式耦合所引起的背向散射具有鲁棒性。当前的量子光学环行器作为无磁场手性量子信息处理中的一个基本单元具有巨大潜力。
