存在Kerr介质的广义Jaynes-Cummings模型非线性耦合强度对光场量子相位特性的影响  

Effectof the Nonlinear Coupling Intensity on Quantum Phase Properties of Light Field in the Generalized Jayne-Cummings Model with a Kerr Medium

作　　者：范安辅[1,3] 范欣[2] 周昕[1] 

机构地区：[1]四川大学光电科学技术系,成都610064 [2]四川大学计算机科学系,成都610064 [3]中国高等科学技术中心(世界实验室),北京100080

出　　处：《量子光学学报》2000年第1期36-43,共8页Journal of Quantum Optics

基　　金：国家自然科学基金!(批准号 :194 74 0 5 )资助项目

摘　　要：研究了由于 Jaynes- Cum ming模型和非谐振子模型构成的组合模型中光场的量子相位特性 ,计算了光场 - Kerr介质非线性耦合常数与光场 -原子耦合常数的比值在弱 ( ng- 2 >>n2 x2 )。中性 ( ng- 2～ n2χ2 )和强( ng2 <<n2χ2 )非线性耦合情形对光场相位分布、相位平均值和相位涨落的影响 ,并将结果与 Jaynes-CumThe quantum phaseproperties of lightfield in the combined model joining the Jaynes- Cummings and the anharmonic osocillator modelsare studied.The effectof theproportionality value of the field- Kerrmedium coupling constant to the field- atom coupling constant.in weak (ng2 >>n2 g2 ) ,neutral (n2 g2 ～ n2 g2 ) and strong(ng2 <<n2χ2 ) nonlinearcoupling cases.On the phase distributionsand themean valueand thevariance of phase of the light field are computed numerically.The results are compared to earlier results both in the Jaynes- Cummingsmodel and the anharmonic oscillator model.

关 键 词：广义J-C模型 光场 量子相位 非线性耦合 

分 类 号：O431[机械工程—光学工程]