利用光子晶体光纤产生纠缠光子对  

Generation of Entangled Photon Pairs through Photonic Crystal Fiber

作　　者：罗思行[1] 姚立[1] 杨伯君[1] 

机构地区：[1]北京邮电大学理学院光通信与光波技术教育部重点实验室,北京100876

出　　处：《中国激光》2009年第2期410-412,共3页Chinese Journal of Lasers

基　　金：国家自然科学基金(60578043);北京市教委共建项目(XK100130937)资助课题

摘　　要：利用激光脉冲抽运40m的色散平坦光子晶体光纤(PCF),通过四波混频(FWM)效应获得了高质量、高计数率的纠缠光子源。实验测得信号与闲频光分别处于1545 nm和1555 nm处。光子对的符合与偶然符合比可达8,对应的符合述率达1.43 kHz。理论结果与实验结果基本吻合,该系统可作为量子密钥分发系统的光源,误码率可小于6%。We demonstrate a high quality and high counting rate source of entangled photon pairs through four-wavemixing （FWM） by pumping a 40m dispersion-flattened photonic crystal fiber （PCF）. This pair of photons, which are called signal/idle wave, is found at 1545 nm and 1555 nm, respectively. The coincidence and accidental coincidence ratio （C/A） can reach to 8, with the coincidence rate of 1.43 kHz. The computer results have tallied in general with the experiment. Such a system can be used as the source of quantum key distribution system with a bit error rate less than 6 %.

关 键 词：量子光学 光子晶体光纤 纠缠光子对 四波混频 量子密钥分发系统 

分 类 号：O431.2[机械工程—光学工程]