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| Presentation | 2024-07-11 13:30 Study on improvement of polar code-based information reconciliation for continuous-variable quantum key distribution by revealing received soft values Takumi Kamiya, Ryuto Terada (nitech), Hiroyuki Endo (NICT), Eiji Okamoto (nitech), Masahide Sasaki, Mikio Fujiwara (NICT)  CS2024-19 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Quantum key distribution is attracting attention because it enables secure establishment of random numbers between transmitters and receivers, because attackers' malicious attempts inevitably leave its traces. We have proposed a method of applying a polar code, which is a strong error-correcting code, to continuous-variable quantum key distribution to improve the efficiency of cryptographic key generation. However, the conventional methods use binary log-likelihood values in decoding, and thus there is room for improvement in error-correction performance. In this paper, we propose a soft-valued decoding method in which the received value obtained by homodyne detection is announced to the decoding side through a public communication channel. Numerical results show that the quantum bit error rate that can achieve error-free operation can be improved by 1% to 3% compared to the conventional polar code-based method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | continuous-variable quantum key distribution / quantum cryptography / information reconciliation / polar codes / homodyne detection / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 124, no. 100, CS2024-19, pp. 49-54, July 2024. | |
| Paper # | CS2024-19 | |
| Date of Issue | 2024-07-04 (CS) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | CS2024-19 |
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| Conference Information | |
| Committee | CS |
| Conference Date | 2024-07-11 - 2024-07-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Center for Tsushima engagement |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Semantic communications, Access networks, Underwater and underground communications, IoT, Cognitive radio, Coding scheme, etc. |
| Paper Information | |
| Registration To | CS |
| Conference Code | 2024-07-CS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on improvement of polar code-based information reconciliation for continuous-variable quantum key distribution by revealing received soft values |
| Sub Title (in English) | |
| Keyword(1) | continuous-variable quantum key distribution |
| Keyword(2) | quantum cryptography |
| Keyword(3) | information reconciliation |
| Keyword(4) | polar codes |
| Keyword(5) | homodyne detection |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takumi Kamiya |
| 1st Author's Affiliation | Nagoya Institute of Technology (nitech) |
| 2nd Author's Name | Ryuto Terada |
| 2nd Author's Affiliation | Nagoya Institute of Technology (nitech) |
| 3rd Author's Name | Hiroyuki Endo |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
| 4th Author's Name | Eiji Okamoto |
| 4th Author's Affiliation | Nagoya Institute of Technology (nitech) |
| 5th Author's Name | Masahide Sasaki |
| 5th Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
| 6th Author's Name | Mikio Fujiwara |
| 6th Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2024-07-11 13:30:00 |
| Presentation Time | 2 minutes |
| Registration for | CS |
| Paper # | CS2024-19 |
| Volume (vol) | vol.124 |
| Number (no) | no.100 |
| Page | pp.49-54 |
| #Pages | 6 |
| Date of Issue | 2024-07-04 (CS) |
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