Paper Abstract and Keywords |
Presentation |
2023-05-30 15:50
General treatment of trusted receiver noise in continuous variable quantum key distribution Shinichiro Yamano (UT), Takaya Matsuura (RMIT University), Yui Kuramochi (Kyushu Univ.), Toshihiko Sasaki, Masato Koashi (UT) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Continuous Variable (CV) quantum key distribution (QKD) is a promising candidate for practical implementations due to its compatibility with the existing communication technology. A trusted device scenario assuming that an adversary has no access to imperfections in the detector is expected to provide significant improvement in the key rate, but such an endeavor so far was made separately for specific protocols and for specific proof techniques. Here, we develop a simple and general treatment that can incorporate the effects of Gaussian trusted noises for any protocol that uses homodyne/heterodyne measurements. In our method, a rescaling of the outcome of a noisy homodyne/heterodyne detector renders it equivalent to the outcome of a noiseless detector with a tiny additional loss, thanks to a noise-loss equivalence well-known in quantum optics. Since this method is independent of protocols and security proofs, it is applicable to Gaussian-modulation and discrete-modulation protocols and to any proof techniques developed so far and yet to be discovered as well. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Quantum Cryptography / continuous variable quantum key distribution / trusted noise / / / / / |
Reference Info. |
IEICE Tech. Rep. |
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Conference Information |
Committee |
QIT |
Conference Date |
2023-05-29 - 2023-05-30 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Katsura Campus, Kyoto University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Quantum Information |
Paper Information |
Registration To |
QIT |
Conference Code |
2023-05-QIT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
General treatment of trusted receiver noise in continuous variable quantum key distribution |
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Quantum Cryptography |
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continuous variable quantum key distribution |
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trusted noise |
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1st Author's Name |
Shinichiro Yamano |
1st Author's Affiliation |
The University of Tokyo (UT) |
2nd Author's Name |
Takaya Matsuura |
2nd Author's Affiliation |
RMIT University (RMIT University) |
3rd Author's Name |
Yui Kuramochi |
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Kyushu University (Kyushu Univ.) |
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Toshihiko Sasaki |
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The University of Tokyo (UT) |
5th Author's Name |
Masato Koashi |
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The University of Tokyo (UT) |
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Date Time |
2023-05-30 15:50:00 |
Presentation Time |
15 minutes |
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QIT |
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