Single-photon interference experiment over 100 km for quantum cryptography system using balanced gated-mode photon detector
Hideo KosakaFundamental Research Laboratories, NEC, 34 Miyukigaoka, Tsukuba, 305-8501, JapanAkihisa TomitaYasusada NambuFundamental Research Laboratories, NEC, 34 Miyukigaoka, Tsukuba, 305-8501, JapanT. KimuraDepartment of Materials Science and Engineering, Tokyo Institute of Technology, 4259 Nagaoka, Yokohama, 226-8502, JapanKazuo NakamuraFundamental Research Laboratories, NEC, 34 Miyukigaoka, Tsukuba, 305-8501, Japan
2003en
ABI
Аннотация
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.
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