赝热光场的统计特性及其关联成像理论  

Photon statistics of pseudo-thermal light and its theory of correlated imaging

作　　者：施展[1] 樊祥[1] 程正东[1] 朱斌[1] 魏元[1] 

机构地区：[1]脉冲功率技术国家重点实验室合肥电子工程学院,安徽合肥230037

出　　处：《光电子．激光》2016年第11期1246-1250,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61307025);安徽省自然科学基金(1308085MF114)资助项目

摘　　要：赝热光源是关联成像的常用光源,相较量子态的纠缠双光子光源来说,更容易获得并用于进行关联实验。赝热光和纠缠双光子有一定的相似之处,尤其是在光场的统计特性上,这一点和关联计算密切相关。当量子场为相干态或其经典随机混合时,量子光场和经典光场在统计特性上完全相同,从而可以采用零均值高斯态对赝热光场的非相敏传播过程进行完整描述。基于这一模型,可以建立赝热光场的半径典探测理论,推导参考光路和信号光路光电流的关联计算公式,进而对鬼像的分辨率和对比度以及关联成像系统的视场进行分析。Pseudo-thermal light is a regular sou rce for correlated imaging.Copared to entangled bi-photon source,it can be easi ly obtained and put to use in experiment.Pseudo-thermal light and entangled bi -photon are similar in some particular ways,especially in photon statistics whi ch is the key to correlated calculation.A quantum state is classical if it is a coherent state or a classically-random mixuture of coherent states.Thus the zer o-mean Gaussian state can be used to describe the phase-insensitive coherenece propagation of pseudo-thermal light.Based on this model,semi-classical photo -detection therory of pseudo-thermal ight can be build,correlation function of signal path and reference path can be derived.So that the resolution and contra st of ghost image and view of GI system can be analyzed.

关 键 词：量子光学 赝热光 关联成像 关联函数 

分 类 号：O431.2[机械工程—光学工程]