Optomechanical ratchet resonators  

作　　者：Wenjie Nie Leqi Wang Yu Wu Aixi Chen Yueheng Lan 

机构地区：[1]Department of Applied Physics,East China Jiaotong University,Nanchang 330013,China [2]Department of Physics,Zhejiang Sci-Tech University,Hangzhou 310018,China [3]Department of Physics,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2022年第3期19-25,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.12065008);the Key Project of Youth Science Foundation of Jiangxi Province(Grant No.20192ACBL21001);the Outstanding Youth Project of Jiangxi Province(Grant No.20192BCBL23007);supported by the National Natural Science Foundation of China(Grant No.11775190);supported by the National Natural Science Foundation of China(Grant No.11775035)。

摘　　要：We describe an optomechanical ratchet scheme to realize nonreciprocal transmission of a light field, which is based on the bias of the optical cavity’s frequency spectrum caused by mechanical ratchet interactions. This approach to break the time-reversal symmetry of light propagation is universally valid in various optomechanical systems with ratchet-oscillator structures. We discuss specifically the implementation of an on-chip Casimir-ratchet optomechanical protocol and demonstrate the optical nonreciprocity with an extremely high isolation ratio and flexible controllability, which does not require external additional optical engineering. Our study opens a door for manipulating flexibly light propagation by using mechanical ratchet resonators, and has potential applications in the on-chip integration of nonreciprocal devices and harness of lateral Casimir forces.

关 键 词：OPTOMECHANICS nonreciprocal transmission Casimir effect ratchet effect 

分 类 号：TN751.2[电子电信—电路与系统] O43[机械工程—光学工程]