Paper Abstract and Keywords |
Presentation |
2023-07-12 15:00
Quantum Signal Transmission Experiment for Line-of-sight Quantum Key Distribution Hiroyuki Endo, Mitsuo Kitamura, Shunsuke Ozawa (NICT), Ryosuke Shimizu (UEC), Mikio Fujiwara, Masahide Sasaki (NICT) SAT2023-13 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Quantum key distribution (QKD) can be secure against any physically allowable attacks. Its transmission distance and key generation rate are still limited. In the case of satellite-ground laser communication, on the other hand, where the channel is highly directional and line-of-sight, it is reasonable to assume that an eavesdropper is hard to fully access the line-of-sight channel between Alice and Bob without being found, and hence the QKD performance could be much improved. This scheme, so-called line-of-sight QKD is expected to construct a global-scale QKD network using satellites. This paper reports the long-distance quantum signal transmission experiment for line-of-sight QKD. We conducted the real-field experiment using the 7.8-km free-space optical testbed between UEC and NICT, and evaluate the quantum signal reception rate and the achievable key generation rate. Based on the results, we discuss the required technology for line-of-sight QKD. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Quantum Key distribution / Line-of-sight QKD / Physical-layer cryptography / Free-space optical communication / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 123, no. 105, SAT2023-13, pp. 19-24, July 2023. |
Paper # |
SAT2023-13 |
Date of Issue |
2023-07-05 (SAT) |
ISSN |
Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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SAT2023-13 |
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