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Practical decoy-state quantum key distribution method considering dark count rate fluctuation 被引量：1

Practical decoy-state quantum key distribution method considering dark count rate fluctuation
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摘要 Considering fluctuant dark count rate in practical quantum key distribution(QKD) system,a new decoy-state method with one vacuum state and one weak decoy state is presented based on a heralded single photon source(HSPS).The method assumes that the dark count rate of each pulse is random and independent.The lower bound of the count rate and the upper bound of the error rate of a single photon state are estimated.The method is applied to the decoy-state QKD system with and without the fluctuation of dark count rate.Because the estimation of the upper bound of a single photon state's error rate is stricter,the method can obtain better performance than the existing methods under the same condition of implementation. Considering fluctuant dark count rate in practical quantum key distribution（QKD） system,a new decoy-state method with one vacuum state and one weak decoy state is presented based on a heralded single photon source（HSPS）.The method assumes that the dark count rate of each pulse is random and independent.The lower bound of the count rate and the upper bound of the error rate of a single photon state are estimated.The method is applied to the decoy-state QKD system with and without the fluctuation of dark count rate.Because the estimation of the upper bound of a single photon state＇s error rate is stricter,the method can obtain better performance than the existing methods under the same condition of implementation.
作者 周媛媛 江华 王瑛剑
机构地区 Electronic Engineering College Department of Equipment Economy Management
出处 《Optoelectronics Letters》 EI 2012年第5期384-388,共5页 光电子快报（英文版）
基金 supported by the National High Technology Research and Development Program of China (No.2009AAJ128) the Science Foundation of Naval University of Engineering (No.HGDQNJJ11022)
关键词 量子密钥分配 计数率 诱骗 波动 配方法 真空状态 单光子源 HSPS Magnetic materials Optoelectronic devices
分类号 O413 [理学—理论物理] TN918.1 [电子电信—通信与信息系统]
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参考文献30

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同被引文献19

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  • 9Hongjo T, Inoue K, Takahashi H. Differential-phase-shift quantum key distribution experiment with a planar light- wave circuit Mach-Zehnder interferometer [ J]. Opt. Lett. , 2004,29 : 2797-2799.
  • 10Yuan Z L,Shields A J. Continuous operation of a one-way quantum key distribution system over installed telecom fi- ber[J]. Opt Exp, 2005,13(2) : 660-665.

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Optoelectronics Letters
2012年 第5期

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