大气湍流对双模量子态光场偏振特性的影响  

Effect of atmospheric turbulence on quantum state of two-mode light field polarization properties

作　　者：余梦莹 闫香 YU Mengying;YAN Xiang(School of Physics and Electronic Information Engineering,Hubei Engineering University Xiaogan,432000,China)

机构地区：[1]湖北工程学院物理与电子信息工程学院,湖北孝感432000

出　　处：《量子电子学报》2019年第1期68-74,共7页Chinese Journal of Quantum Electronics

基　　金：湖北省教育厅科学技术研究计划青年人才项目;Q20182703~~

摘　　要：数值分析了双模部分相干高斯-谢尔模型光束传输通过non-Kolmogorov湍流的偏振特性;得到了双模量子态光场偏振度的具体表达形式.研究结果表明双模量子态光场在大气湍流中传输时,偏振度将受到湍流和探测光子数的影响;湍流的谱指数和内尺度越大或者湍流的折射率结构常数和湍流的外尺度越小,双模量子态光场受大气湍流的影响越小.此外,在双模光子数态光场中,两正交偏振模式上探测到的光子数相差越大,光场的偏振特性保持的越好,该结果与在双模相干态光场中得到的结果相反.Non-classical polarization properties of the two-mode partially coherent Gauss-Shell model beam propagating through non-Kolmogorov turbulence are analysed. The analytic equation for the polarization degree of the quantum state of the two-mode light field is obtained. Results show that the polarization fluctuations of the quantum state of the two-mode light field are dependent on the turbulence and the detection photon numbers. The polarization degree of the quantum state of the two-mode field gradually decrease. Furthermore, the bigger difference is on the two orthogonal polarization modes detected photon numbers, the better the polarization properties of the two-mode light field are maintained, which is contrary to the two-mode coherent state light field.

关 键 词：量子光学 双模光场 Non-Kolmogorov湍流 量子态 偏振 

分 类 号：O431.2[机械工程—光学工程]