混合原子光机械系统中的量子相干控制  

Quantum Coherent Control in Hybrid Atom Optomechanical Systems

作　　者：王琦[1] 戈燕[1] 刘练珍[1] 张向阳[1] 

机构地区：[1]江南大学理学院,江苏无锡214122

出　　处：《光学学报》2016年第11期15-22,共8页Acta Optica Sinica

基　　金：国家自然科学基金(60875084;61273017);中央高校基本科研业务费专项资金(JUSRP211A24);教育部留学回国人员科研启动基金

摘　　要：研究了原子相干及量子相干对混合原子光机械系统输出特性的影响。应用微扰方法及光腔的输入输出理论求解Langevin方程,得到了混合原子光机械系统对弱探测场的响应函数。分析了腔模与原子系统的耦合强度、量子干涉效应对混合原子光机械系统输出特性的影响。研究发现,控制原子系统的量子干涉效应,即可控制混合原子光机械系统的输出特性;改变原子系统的控制场强度,便可改变混合原子光机械系统的透明窗口宽度,从而得到由原子吸收谱调制的光机械系统的吸收谱;在光机械系统透明窗口中心区域可实现探测场的放大;改变原子系统中控制场或耦合场的失谐量,可以控制混合原子光机械系统的透明窗口位置。The influence of atomic coherence and quantum coherence on the hybrid atom optomechanical system is studied.The Langevin equation is solved by the perturbation method and the optical cavity input-output theory,and the response function of the hybrid atom optomechanical system to weak probe field is obtained.The influence factors,including the coupling strength between the cavity mode and the atom system and the quantum interference effect on the output properties of the hybrid atom optomechanical system,are analyzed.It is found that the output properties of the hybrid atom optomechanical system can be controlled by controlling quantum interference effect.By changing the intensity of the controlling field,the width of the transparent window of the hybrid atom optomechanical system can be changed,and the absorption spectra of the optomechanical system modulated by the atom absorption spectrum is obtained.The probe field can be amplified in the center region of the transparent window of the hybrid atom optomechanical system.When the detuning of the controlling field or the coupling field is changed,the location of the transparent window of the hybrid atom optomechanical system can be controlled.

关 键 词：原子与分子物理学 光机械系统 量子相干控制 电磁诱导透明 

分 类 号：O431.2[机械工程—光学工程]