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High speed quantum key distribution system

机译：高速量子密钥分配系统

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摘要

Quantum key distribution (QKD) systems can generate unconditionally secure common key between remote users. Improvement of QKD performance, particularly on key generation rate, has been required to meet current network traffic. The present paper considers system requirement to improve key generation rate by increasing photon detection rate and reducing error rate. A high-speed QKD system should be equipped with low loss receivers with high visibility, highly efficient photon detectors with small dark count probability, and a stable clock synchronization system with low stray light to the quantum signals. A solution for these issues are given by employing planar lightwave circuit interferometers, single photon detection circuits and modules, and clock synchronization based on wavelength division multiplexing (WDM) technique. A QKD system has been developed by combining these techniques. The system working with 625 MHz clock generated sift key at the rate of 2.4 kbps through a 97-km single installed fiber core.
机译：量子密钥分发（QKD）系统可以在远程用户之间生成无条件安全的公共密钥。为了满足当前的网络流量，需要改进QKD性能，尤其是在密钥生成速率方面。本文考虑通过提高光子检测率和降低错误率来提高密钥生成率的系统要求。高速QKD系统应配备具有高可见度的低损耗接收器，具有低暗计数概率的高效光子检测器，以及对量子信号具有低杂散光的稳定时钟同步系统。通过使用平面光波电路干涉仪，单光子检测电路和模块，以及基于波分复用（WDM）技术的时钟同步，可以解决这些问题。通过结合这些技术开发了QKD系统。该系统以625 MHz的时钟工作，通过一个97公里的单个安装的光纤核心以2.4 kbps的速率生成了筛选密钥。

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  • 来源
    《Optical fiber technology》 |2010年第1期|55-62|共8页
  • 作者

    Akihisa Tomita; Ken-ichiro Yoshino; Yoshihiro Nambu; Akio Tajima; Akihiro Tanaka; Seigo Takahashi; Wakako Maeda; Shigehito Miki; Zhen Wang; Mikio Fujiwara; Masahide Sasaki;

  • 作者单位

    Quantum Computation and Information Project, ERATO-SORST, Japan Science and Technology Agency, Miyukigaoka 34, Tsukuba, Ibaraki 305-8501, Japan Nano Electronics Research Laboratories, NEC Corporation, Miyukigaoka 34, Tsukuba, Ibaraki 305-8501, Japan;

    Nano Electronics Research Laboratories, NEC Corporation, Miyukigaoka 34, Tsukuba, Ibaraki 305-8501, Japan;

    Nano Electronics Research Laboratories, NEC Corporation, Miyukigaoka 34, Tsukuba, Ibaraki 305-8501, Japan;

    System Platforms Research Laboratories, NEC Corporation, Shimonumabe, 1753, Nakahara-ku, Kawasaki, Kanagawa 2111 -8666, Japan;

    System Platforms Research Laboratories, NEC Corporation, Shimonumabe, 1753, Nakahara-ku, Kawasaki, Kanagawa 2111 -8666, Japan;

    System Platforms Research Laboratories, NEC Corporation, Shimonumabe, 1753, Nakahara-ku, Kawasaki, Kanagawa 2111 -8666, Japan;

    System Platforms Research Laboratories, NEC Corporation, Shimonumabe, 1753, Nakahara-ku, Kawasaki, Kanagawa 2111 -8666, Japan;

    Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology, Iwaoka 588-2, Nishi-ku, Kobe, Hyogo 651-2492, Japan;

    Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology, Iwaoka 588-2, Nishi-ku, Kobe, Hyogo 651-2492, Japan;

    National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan;

    National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    quantum key distribution; planar lightwave circuit; single photon detector; WDM;

    机译：量子密钥分配;平面光波电路单光子探测器波分复用;

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