摘要
基于BB84协议原理,搭建偏振编码的长距离点对点实际量子密钥分发实验系统.利用该实验平台完成了5,10,15km 3种不同传输距离的量子密钥分发实验,并对系统主要参数实时采集进行数据分析.实验结果表明:随着发送端与接收端量子光纤信道距离的增加,在统计时间内,系统分段成码率降低,信号态和诱骗态误码率上升,系统产生的密钥量降低.
A long distance peer to peer quantum key distribution experimental system of polarization encoding was built based on BB84 protocol.With the help of this experimental platform,quantum key distribution experiment with 5,10,15 km three different transmission distances was completed and the main parameters of the system was collected in real time for data analysis.The experimental results show that with the increase of quantum fiber channel distance from sending end to receiving end,the system bit generation rate and the amount of key generated by the system would drop,the bit error rate of signal state and decoy state would increase within statistical time.The experimental results have theoretical and practical value for practical development of the long-range security quantum key distribution system.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2014年第5期1014-1017,共4页
Journal of Jilin University:Science Edition
基金
国家自然科学基金(批准号:61373051
61202309)
教育部春晖计划项目(批准号:Z201259)
吉林省科技发展计划项目(批准号:20130521016JH
201201139
20130101179JC
20140101187JC
20130206040GX)
关键词
量子密钥分发
BB84协议
诱骗态
信号态
误码率
quantum key distribution
BB84 protocol
decoy state
signal state
bit error rate
