耦合腔磁力系统中多透明窗口现象  

Multi-transparent Window Phenomenon in Coupled CavityMagnomechanical System

作　　者：廖庆洪[1] 彭坤 宋梦林 Liao Qinghong;Peng Kun;Song Menglin(Department of Electronic Information Engineering,School of Information Engineering,Nanchang University,Nanchang 330031,Jiangxi,China)

机构地区：[1]南昌大学信息工程学院电子信息工程系,江西南昌330031

出　　处：《中国激光》2024年第6期231-238,共8页Chinese Journal of Lasers

基　　金：国家自然科学基金(62061028);南昌大学江西省财政科技专项“包干制”试点示范项目(ZBG20230418015);上海市特殊人工微结构材料与技术重点实验室开放基金(ammt2021A-4)。

摘　　要：基于耦合腔磁力系统研究了多透明窗口现象以及快慢光效应。利用量子光学理论以及标准输入-输出关系,对该系统的输出特性进行了研究。结果表明,可以通过调节系统参数得到不同数目的透明窗口并得到较好的透明效果。同时,提出了一种通过测量吸收峰高度和宽度来精密测量两腔之间的相互作用强度的方法。此外,通过对系统参数进行调控,可以实现快慢光转换。该方案在精密测量和量子信息处理等领域中具有重要的指导意义。Objective With the rapid developments in nanotechnology,cavity optomechanics has become an important research topic in quantum mechanics.Magnomechanical cavity systems have attracted considerable attention in recent years.Compared to the cavity optomechanical system,the cavity magnomechanical system exhibits many benefits such as high spin density,high cooperativity with microwave photons,and a very low damping rate.Therefore,this study provides a new platform for examining interactions between light and matter.This study analyzes the multi-transparent window phenomenon,fast-and slow-light effects,and precision measurements in a coupled cavity magnomechanical system.These results have potential applications in quantum information processing and high-precision measurements.Methods In this study,we commence with a coupled cavity magnomechanical system model.The hybrid cavity magnomechanical system consists of two yttrium iron garnet(YIG)balls located near the maximum magnetic field of the two resonant cavities,and a bias magnetic field is applied to the YIG balls in the z-direction of the two resonant cavities to excite the magnon mode and realize strong coupling with the cavity field.Mutual coupling exists between the optical fields of the two resonators,and the coupling strength is related to the distance between them.A weak probe laser beamεp with frequencyωp is applied to the optical cavity a1.The total Hamiltonian of the coupled cavity-magnetic field can be obtained in a frame rotating at the frequency of the driving field.Based on the Heisenberg equation and input-output relationship,we can obtain the output field(εout)expression and group delay(τ)expression of the system.Subsequently,the effects of various parameters on the optical response of the system are investigated.Results and Discussions When the coupling between two microwave cavities and magnon-phonon coupling are absent,there is only photon-magnon coupling between the cavity a1 and magnon m1.At this time,there is a magnon-induced transparency w

关 键 词：量子光学 磁振子 透明窗口 腔磁力系统 

分 类 号：O436[机械工程—光学工程]