量子保密通信用增益开关半导体脉冲激光器  

Gain-Switched Semiconductor Pulsed Laser for Quantum Secure Communication

作　　者：周强[1,2] 刘金璐[2] 谷远辉 樊矾[2] 王云祥[1] 徐兵杰 

机构地区：[1]电子科技大学光电信息学院,四川成都610054 [2]保密通信重点实验室,四川成都610041

出　　处：《中国激光》2016年第5期25-30,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金青年基金(61405030;61501414;61308041);教育部中央高校科研业务经费;电子科大科研启动经费

摘　　要：近30年来,量子信息科技是令人激动的研究领域之一。其中,量子保密通信技术,已逐渐开始从实验研究迈向工程应用,有望率先实现商用化发展。面向量子保密通信系统的全面普及和推广,基于半导体激光器的增益开关效应和商品电子学芯片,设计和实现了皮秒脉冲激光器模块。其特点包括:工作波长位于光纤量子信道的低损窗口,即1.5μm波段;输出光频的波动小于20 MHz;光脉冲的时域宽度为10个皮秒量级;输出光脉冲间不具有确定的相位关系。进一步地,结合"弱相干"单光子源在量子保密通信技术中的应用,对上述特点进行检验和讨论。In the last three decades,quantum information science and technology is one of the most exciting research fields.Among all the achievements,quantum secure communication technology is gradually started from experimental research to engineering application and expected to take the lead in achieving the commercial development.Towards the comprehensive popularization of the quantum secure communication system,apicosecond pulsed laser module has been designed and fabricated based on the gain-switching effect of the semiconductor laser and commercial electronic chips.The realized laser module has the following properties：operating wavelength at the low transmission loss window of fiber quantum channel,i.e.,1.5μm;with a frequency fluctuation of less than 20MHz;pulse time domain width of tens of picoseconds;no fixed phase correlation between any two pulses.Moreover,these properties are verified and discussed based on the requirement of weak coherent single photon source for quantum secure communication application.

关 键 词：量子光学 量子保密通信 半导体激光器 脉冲激光器 增益开关 

分 类 号：TN29[电子电信—物理电子学]