基于双腔光力系统实现不同频率多场纠缠  

Generation of Entangled Multi-field with Different Frequencies Based on Double-cavity Optomechanical System

作　　者：刘佳琦 杨希华[1] LIU Jia-qi;YANG Xi-hua(Department of Physics,College of Science,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学理学院物理系

出　　处：《量子光学学报》2018年第3期243-250,共8页Journal of Quantum Optics

基　　金：国家自然科学基金(11574195)

摘　　要：考虑在一个振动膜置于法布里-珀罗腔中间位置形成的双腔光机械系统中,当腔场的自由频谱宽度与腔镜谐振频率相比拟时,从两侧各注入单个强泵浦场,通过求解海森堡-朗之万方程来分析系统内多光场的纠缠特性。研究结果表明,利用该双腔光力系统,基于光场辐射压产生的腔场与腔镜耦合可方便地制备具有较大频率差的多光场纠缠,且在室温甚至更高温度下仍然可获得较强纠缠。该方案为实现频率相差很大的连续变量多光场纠缠制备提供了一种简便有效的方法。Considering a double-cavity optomechanical system with a membrane oscillator placed in the middle of a Fabry-Perot cavity driven by a single input laser field from each side,when the cavity free spectral range is close to mechanical oscillation frequency,the entanglements among the multiple light fields are analyzed by solving the Heisenberg-Langevin equations.It＇s shown that multiple entangled light fields with large frequency difference can be obtained via the optomechanical interaction in the double-cavity optomechanical system.Moreover,the multiple fields entanglement can still exist at or over the room temperature.The scheme provides a simple and effective way for generating continuous variable entangled multiple fields with large frequency difference.

关 键 词：量子光学 多光场纠缠 双腔腔光机械系统 光场辐射压 

分 类 号：O431.2[机械工程—光学工程]