10.5 km Fiber-Optic Quantum Key Distribution at 1550 nm with a Key Rate of 45 kHz
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概要
- 論文の詳細を見る
High-speed single-photon detectors are crucial for efficiently performing quantum key distribution. We demonstrate fiber-optic quantum key distribution at 1550 nm using single-photon detectors operating at 10 MHz. Discharge pulse counting is adopted for single-photon detection in order to suppress after-pulse generation. Furthermore, by setting a dead time in single-photon detection, we discard after-pulses to reduce the number of bit errors in the quantum key distribution. Using discharge pulse counting and after-pulse discarding in the quantum key distribution, we can achieve a key rate of 45 kHz with a bit-error rate of 2%. The fiber length is 10.5 km.
- Japan Society of Applied Physicsの論文
- 2004-06-01
著者
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Kaji Ryosaku
National Institute Of Advanced Industrial Science And Technology (aist)
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Yoshizawa Akio
National Institute Of Advanced Industrial Science And Technology (aist)
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Yoshizawa Akio
National Inst. Of Advanced Industrial Sci. And Technol. (aist) Ibaraki Jpn
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Tsuchida Hidemi
National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba 305-
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Tsuchida Hidemi
National Institute Of Advanced Industrial Science And Technology (aist)
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Tsuchida Hidemi
National Inst. Of Advanced Industrial Sci. And Technol. (aist) Ibaraki Jpn
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