Quantum Squeezing Induced Optical Nonreciprocity
Quantum Squeezing Induced Optical Nonreciprocity
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量子压缩引起的光学非互易性
DOI：
10.1103/physrevlett.128.083604
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发表时间：
2022
影响因子：
8.6
通讯作者：
Keyu Xia
中科院分区：
文献类型：
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作者：
Lei Tang;Jiangshan Tang;Mingyuan Chen;Franco Noi;Min Xiao;Keyu Xia
我们提出了一种全光方法，通过量子压缩两个耦合腔模式之一来实现芯片上的光学非互易性。通过经典相干场单向参量抽运非线性谐振腔，由于相位匹配条件，我们在选择的方向上挤压谐振腔模式，并在两个谐振腔之间诱导手征光子相互作用。基于这种手征腔间耦合，我们实现了一个全光二极管和一个三端口准循环器。通过在压缩腔模上施加第二压缩真空场，我们的非互易器件也可以用于单光子脉冲。我们得到二极管的隔离比为，准循环器的保真度为，两者的插入损耗为。我们还表明，强光的非互易传输可以通过一个相对较弱的泵浦光打开和关闭。这项成就意味着一种非互易光晶体管。我们的协议开辟了一条新的路线，以实现可集成的全光非互易器件，允许芯片兼容的光隔离和非互易量子信息处理。
We propose an all-optical approach to achieve optical nonreciprocity on a chip by quantum squeezing one of two coupled resonator modes. By parametric pumping a-nonlinear resonator unidirectionally witha classical coherent field, we squeeze the resonator mode in a selective direction due to the phase-matching condition, and induce a chiral photon interaction between two resonators. Based on this chiral interresonator coupling, we achieve an all-optical diode and a three-port quasicirculator. By applyinga second squeezed-vacuum fieldto the squeezed resonator mode, our nonreciprocal device also works for single-photon pulses. We obtain an isolation ratio offor the diode and fidelity offor the quasicirculator, and insertion loss offor both. We also show that nonreciprocal transmission of strong light can be switched on and off by a relative weak pump light. This achievement impliesa nonreciprocal optical transistor. Our protocol opens up a new route to achieve integrable all-optical nonreciprocal devices permitting chip-compatible optical isolation and nonreciporcal quantum information processing.