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Paper Abstract and Keywords
Presentation 2024-07-11 13:28
Study on high-efficiency information reconciliation for continuous-variable quantum key distribution using raptor code
Ryuto Terada, Takumi Kamiya (nitech), Hiroyuki Endo (NICT), Eiji Okamoto (nitech), Masahide Sasaki, Mikio Hujiwara (NICT) CS2024-18
Abstract (in Japanese) (See Japanese page) 
(in English) Quantum key distribution can establish cryptographic keys securely against all physically possible attacks, but it is relatively difficult to maintain a sufficient key generation rate over long distances due to the large signal attenuation. As a countermeasure, a post-selection method, which eliminates bits with high error probability in a low signal-to-noise ratio (SNR) environment, is known. However, in conventional information reconciliation methods using block codes, the entire signal processing including post-selection is performed with hard value instead of soft value, which limits error correction capability. In this paper, we propose an information reconciliation system for continuous-variable quantum key distribution that combines Raptor codes and post-selection to further improve error correction capability. By using Raptor codes, which are rateless codes, both post-selection and soft-valued decoding can be realized. We evaluate the proposed method by numerical simulations and show that it has excellent properties even in the lower SNR region.
Keyword (in Japanese) (See Japanese page) 
(in English) continuous-variable quantum key distribution / quantum cryptography / information reconciliation / Raptor codes / rateless codes / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 100, CS2024-18, pp. 43-48, July 2024.
Paper # CS2024-18 
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 CS2024-18

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 high-efficiency information reconciliation for continuous-variable quantum key distribution using raptor code 
Sub Title (in English)  
Keyword(1) continuous-variable quantum key distribution  
Keyword(2) quantum cryptography  
Keyword(3) information reconciliation  
Keyword(4) Raptor codes  
Keyword(5) rateless codes  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ryuto Terada  
1st Author's Affiliation Nagoya Institute of Technology (nitech)
2nd Author's Name Takumi Kamiya  
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 Hujiwara  
6th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2024-07-11 13:28:00 
Presentation Time 2 minutes 
Registration for CS 
Paper # CS2024-18 
Volume (vol) vol.124 
Number (no) no.100 
Page pp.43-48 
#Pages 6 
Date of Issue 2024-07-04 (CS) 

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