Single-photon interference experiment over 100 km for quantum cryptography system using balanced gated-mode photon detector

Single-photon interference experiment over 100 km for quantum cryptography system using balanced gated-mode photon detector
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DOI：
10.1049/el:20030791
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发表时间：
2003-06
期刊：
Electronics Letters
影响因子：
1.1
通讯作者：
H. Kosaka;A. Tomita;Y. Nambu;T. Kimura;Kazuo Nakamura
H. Kosaka;A. Tomita;Y. Nambu;T. Kimura;Kazuo Nakamura
中科院分区：
工程技术4区
文献类型：
--
作者：
H. Kosaka;A. Tomita;Y. Nambu;T. Kimura;Kazuo Nakamura

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作者演示了超过100公里的单光子干涉，使用平衡门控模式光子探测器和即插即用系统进行量子密钥分配。0.1光子/脉冲的能见度在100 km传输后大于80%。这相当于量子密码系统的保真度超过90%，QBER小于10%，满足安全标准。
The authors demonstrate single-photon interference over 100 km using a balanced gated-mode photon detector and a plug and play system for quantum key distribution. The visibility with 0.1 photon/pulse was more than 80% after 100 km transmission. This corresponds to the fidelity of a quantum cryptography system of more than 90% and a QBER of less than 10%, satisfying the security criteria.