| 长程光纤传输的时间抖动对相位编码量子密钥分发系统的影响 |
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| 引用本文： | 王金东,魏正军,张辉,张华妮,陈帅,秦晓娟,郭健平,廖常俊,刘颂豪.长程光纤传输的时间抖动对相位编码量子密钥分发系统的影响[J].物理学报,2010,59(8):5514-5522. |
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| 作者姓名： | 王金东 魏正军 张辉 张华妮 陈帅 秦晓娟 郭健平 廖常俊 刘颂豪 |
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| 作者单位： | (1)广东广播电视大学工程技术系,广州 510091; (2)华南师范大学信息光电子科技学院光子信息技术广东普通高校重点实验室,广州 510006; (3)中国人民解放军炮兵学院物理教研室,合肥 230031 |
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| 基金项目： | 广州市科技支撑计划(批准号:2008Z1-D501),广东省工业攻关项目(批准号:2007B010400009),广东理工职业学院科研项目(批准号:0901)资助的课题. |
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| 摘 要： | 测量了光脉冲在不同传输距离和不同外界环境影响下基于差分相位编码和双不等臂M-Z相位编码系统的时间抖动,并根据时间抖动的分布情况建立了相位编码量子密钥分发系统中误码率和时间抖动关系的物理模型,给出了单光子脉冲一般波形函数和误码率之间的关系式,根据这个关系式可以得出确定波形单光子脉冲在确定时间抖动分布情况下系统误码率的结果.
关键词：
量子密钥分发
相位编码
时间抖动
误码率
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| 关 键 词： | 量子密钥分发 相位编码 时间抖动 误码率 |
| 收稿时间： | 2009-10-22 |
The influence of the time delay through long trunk fiber on the phase-coding quantum key distribution system |
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| Wang Jin-Dong,Wei Zheng-Jun,Zhang Hui,Zhang Hua-Ni,Chen Shuai,Qin Xiao-Juan,Guo Jian-Ping,Liao Chang-Jun,Liu Song-Hao.The influence of the time delay through long trunk fiber on the phase-coding quantum key distribution system[J].Acta Physica Sinica,2010,59(8):5514-5522. |
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| Authors: | Wang Jin-Dong Wei Zheng-Jun Zhang Hui Zhang Hua-Ni Chen Shuai Qin Xiao-Juan Guo Jian-Ping Liao Chang-Jun Liu Song-Hao |
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| Institution: | (1)Guangdong Radio and TV University,Guangzhou 510091,China; (2)Key Laboratory of Photonic Information Technology of Guangdong Higher Education Institutes,School for Information and Optoelectronic Science and Engineering,South China Normal University,Guangzhou 510006, China; (3)Physics Teaching and Research Section,Artillery Academy of Chinese Peoples Liberation Army,Hefei 230031,China |
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| Abstract: | Optical pulse will reach the receiver not at exact time instance due to the transmission through the long trunk fiber, and this phenomenon will effect on the bits error rate in the Quantum key distribution (QKD) system to some extend. The time jitter based on the differential phase shift quantum key distribution system and two asymmetric Mach-Zehnder interferometers is measured outdoors in different transmission distance and the physical model of the relationship between the time jitter and the quantum bit error rate is proposed. According to this relationship, the quantum bit error rate can be estimated for some optical pulse shape and some statistical distribution function. |
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| Keywords: | quantum key distribution phase-encoding time jitter quantum bit error rate |
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