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利用光子晶体光纤产生纠缠光子对 被引量:3

Generation of Entangled Photon Pairs through Photonic Crystal Fiber
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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 %.
出处 《中国激光》 EI CAS CSCD 北大核心 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
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 quantum optics photonic crystal fiber entangled photon pairs four wave mixing quantum key distribution system
作者简介 罗思行(1985-),男,硕士研究生,主要从事量子光学方面的研究。E-mail:lsxfs@bupt.cn 导师简介:杨伯君(1938-),男,教授,博士生导师,主要从事非线性光学与量子光学等方面的研究。E-mail:bojunyang99@sina.com.
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