| Paper Abstract and Keywords |
| Presentation |
2022-12-09 10:30
Refined security proof of the binary-modulation continuous-variable quantum key distribution
Takaya Matsuura (RMIT Univ.), Shinichiro Yamano (Univ. of Tokyo), Yui Kuramochi (Kyushu Univ.), Toshihiko Sasaki, Masato Koashi (Univ. of Tokyo) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Continuous-variable (CV) quantum key distribution (QKD) has its distinct advantages in lower-cost
implementation and multiplexing due to the affinity to the classical optical telecommunication. However, security analyses of CV QKD is not much matured. Here, we apply the security analysis based on complementarity, which has been used for discrete-variable QKD, to a binary-modulation CV QKD protocol in order to improve its performance. It turned out that a CV degree of freedom not utilized in the previous analyses can now be utilized to evaluate the information leakage more tightly. As a result, the key rate of the protocol under the pure-loss channel scales linearly with respect to the attenuation rate, which is expected yet not achieved in the existing security proofs. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Quantum cryptography / Continuous-variable quantum key distribution / Reverse reconciliation / Complementarity / / / / |
| Reference Info. |
IEICE Tech. Rep. |
| Paper # |
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| Date of Issue |
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| Download PDF |
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| Conference Information |
| Committee |
QIT |
| Conference Date |
2022-12-08 - 2022-12-09 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Keio Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Quantum Information |
| Paper Information |
| Registration To |
QIT |
| Conference Code |
2022-12-QIT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Refined security proof of the binary-modulation continuous-variable quantum key distribution |
| Sub Title (in English) |
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| Keyword(1) |
Quantum cryptography |
| Keyword(2) |
Continuous-variable quantum key distribution |
| Keyword(3) |
Reverse reconciliation |
| Keyword(4) |
Complementarity |
| Keyword(5) |
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| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Takaya Matsuura |
| 1st Author's Affiliation |
RMIT University (RMIT Univ.) |
| 2nd Author's Name |
Shinichiro Yamano |
| 2nd Author's Affiliation |
The University of Tokyo (Univ. of Tokyo) |
| 3rd Author's Name |
Yui Kuramochi |
| 3rd Author's Affiliation |
Kyushu University (Kyushu Univ.) |
| 4th Author's Name |
Toshihiko Sasaki |
| 4th Author's Affiliation |
The University of Tokyo (Univ. of Tokyo) |
| 5th Author's Name |
Masato Koashi |
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The University of Tokyo (Univ. of Tokyo) |
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| Speaker |
Author-1 |
| Date Time |
2022-12-09 10:30:00 |
| Presentation Time |
15 minutes |
| Registration for |
QIT |
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| Volume (vol) |
vol. |
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