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量子密钥传输系统的主动相位补偿
  • ISSN号：0023-074X
  • 期刊名称：《科学通报》
  • 时间：0
  • 分类：TN918[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]中国科学技术大学中国科学院量子信息重点实验室,合肥230026, [2]中国科学技术大学电子工程与信息科学系,合肥230027
  • 相关基金：科技部重大科学研究计划（批准号：2006CB921905）、中国科学院知识创新工程重要方向性项目和国际合作团队工程、国家自然科学基金重点项目（批准号：60537020）、国家自然科学基金创新研究群体科学基金（批准号：60621064）资助
作者： 陈巍[1,2], 韩正甫[1], 莫小范[1], 许方星[1], 卫国[2], 郭光灿[1]
关键词： 量子密钥分配, Faraday-Michelson系统, 相位漂移, 主动相位补偿
中文摘要：

量子密钥分配系统的稳定性是影响其实用性能的重要因素之一．除光纤自身固有的双折射效应外，环境造成的相位漂移也会严重影响密钥传输系统的性能．Faraday-Michelson（F-M）量子密钥分配系统可以自适应地补偿光纤双折射造成的影响，但是在实际应用中，相位漂移仍然会对系统性能产生较大影响．本文详细分析了在实际中造成F-M系统相位漂移的主要原因，并提出了一种高效的主动相位搜索和补偿方案．应用这一方案，Faraday-Michelson系统在脱离光学平台的实际条件下进行了长时间稳定的量子密钥分配．实验的传输距离大干37km，系统平均误码率1．59％，误码波动标准差0．46％．结果表明这一主动相位补偿技术在不增加额外器件的条件下，可用于以双不等臂Mach-Zehnder（AMZ）干涉仪为基础的实际量子密钥分配系统．

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
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  • 美国化学文摘（网络版）,美国数学评论（网络版）,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:81792