| 基于USB的量子密钥分发系统中高速数据通道的设计 |
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| 作者姓名： | 崔珂 张鸿飞 罗春丽 梁昊 金革 王坚 |
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| 作者单位： | 中国科学技术大学近代物理系核探测与核电子学国家重点实验室 安徽省物理电子学重点实验室,中国科学技术大学近代物理系核探测与核电子学国家重点实验室 安徽省物理电子学重点实验室,中国科学技术大学近代物理系核探测与核电子学国家重点实验室 安徽省物理电子学重点实验室,中国科学技术大学近代物理系核探测与核电子学国家重点实验室 安徽省物理电子学重点实验室,中国科学技术大学近代物理系核探测与核电子学国家重点实验室 安徽省物理电子学重点实验室,中国科学技术大学近代物理系核探测与核电子学国家重点实验室 安徽省物理电子学重点实验室 |
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| 基金项目： | 国家“973”计划重大项目子课题(2006CB921900);安徽高校省级自然科学研究重点(KJ2009A133)资助项目 |
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| 摘 要： | 提出了一种量子密钥分发(QKD,quantum key distribution)系统中高速数据通道的设计方案—基于通用串行总线(USB,universal serial bus)的数据通道。通过对QKD系统中经典信道数据带宽的分析,设计了USB数据通道方案,并通过USB的速度的测试给出合适的USB参数。实验表明,此数据通道可以适应光子发射频率为20 MHz的QKD系统,且在带宽方面有很大的余量,可以适应后续QKD系统速度提升的需求。
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| 关 键 词： | 量子密钥分发(QKD)系统 数据通道 通用串行总线(USB) |
Design of USB-based high-speed data channel for QKD system |
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| Authors: | CUI Ke ZHANG Hong-fei LUO Chun-li LIANG Hao JIN Ge and WANG Jian |
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| Institution: | Anhui Key Laboratory of Physical Electronics,State Key Laboratory of Particle Detection and Electronics,Modern Physics Department,University of Science and Technology of China,Hefei 230026,China,Anhui Key Laboratory of Physical Electronics,State Key Laboratory of Particle Detection and Electronics,Modern Physics Department,University of Science and Technology of China,Hefei 230026,China,Anhui Key Laboratory of Physical Electronics,State Key Laboratory of Particle Detection and Electronics,Modern Physics Department,University of Science and Technology of China,Hefei 230026,China,Anhui Key Laboratory of Physical Electronics,State Key Laboratory of Particle Detection and Electronics,Modern Physics Department,University of Science and Technology of China,Hefei 230026,China,Anhui Key Laboratory of Physical Electronics,State Key Laboratory of Particle Detection and Electronics,Modern Physics Department,University of Science and Technology of China,Hefei 230026,China and Anhui Key Laboratory of Physical Electronics,State Key Laboratory of Particle Detection and Electronics,Modern Physics Department,University of Science and Technology of China,Hefei 230026,China |
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| Abstract: | A universal serial bus(USB) based design of high speed data channel for quantum key distribution(QKD) system is introduced in this paper.Through analyzing the data transfer requirement in classic channel of QKD,we propose this USB-based scheme.By means of testing the actual speed of USB data channel,the proper USB-relevant parameters are obtained.The experiment results show that the proposed USB design is suitable for QKD system with 20 MHz photon transmitting frequency,and there is still enough bandwidth of the USB module,so it is convenient to use this module in other QKD systems which require higher-speed transmission. |
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| Keywords: | quantum key distribution(QKD) system data channel universal serial bus(USB) |
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