单分子光子源光子统计的非平衡探测  

Effects of unbalanced detection on the photon statistics of single-molecule photon source

作　　者：王铁云[1] 肖连团[2] 

机构地区：[1]长治学院电子信息与物理系,山西长治046011 [2]山西大学物理电子工程学院,太原030006

出　　处：《应用光学》2006年第4期281-284,共4页Journal of Applied Optics

基　　金：国家自然科学基金(60378004);博士点基金(200040108002);山西省留学基金资助项目

摘　　要：研究了在H anbury-B row n-Tw iss探测方式下,非平衡探测系统对光子统计测量的影响。通过记录2个单光子计数器响应的单分子光子源输出的每一个事件,分析具有泊松统计背景的实际单分子光子源的光子统计特性,讨论并给出了非平衡探测系统的单分子光子源M andel参数。研究表明:非理想的50/50分束器、非理想的线性传输效率和非理想的探测器都会使单分子光子源M andel参数的实际测量结果小于平衡系统的M andel参数,最后给出了单分子光子源M andel参数的非理想探测的校正表达式。Theoretical research on the record of every incident output of the single-molecule photon source responded by two SPCM with standard Hanbury-Brown-Twiss technique is presented. The photon statistic measurement of a single molecule photon source based on the HBT configuration with an unbalanced detection system is studied. The photon counting statistics character of the real single molecular photon source with a Poisson statistics background is theoretically investigated. It is shown that the unbalanced detectors, the unbalanced beam-splitter and the unbalanced linear propagation efficiencies will cause the single event Mandel parameter to be less than that of balance system. In addition, the correction expression to the Mandel parameter based on unbalanced detection is given.

关 键 词：单分子光子源 非平衡探测 光子统计 Mandel参数 

分 类 号：O431.2[机械工程—光学工程]