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Paper Abstract and Keywords
Presentation 2016-03-10 15:05
Improved Key Rate of the Semi-Quantum Key Distribution Protocol
Kento Yamada, Ryutaroh Matumoto (Tokyo Tech) IT2015-121 ISEC2015-80 WBS2015-104
Abstract (in Japanese) (See Japanese page) 
(in English) The semi-quantum key distribution protocol(SQKD) is known as a secret key sharing method with information-theoretic security against an eavesdropper. The SQKD protocol is characterized in that the receiver is limited to performing "classical" or "semi-quantum" operations. A lower bound of key rate of the SQKD protocol is shown by Krawec, however its bound may not be tight. So we improve the key rate by minimization of von Neumann entropy, addition of convex optimization constraints and adding new information to be used in the information reconciliation. As a result of these three improvements, we show that the SQKD protocol can generate secure key at 11.9% depolarizing rate.
Keyword (in Japanese) (See Japanese page) 
(in English) quantum cryptgraphy / quantum key distribution / semi-quantum key distribution / SQKD / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 500, IT2015-121, pp. 125-130, March 2016.
Paper # IT2015-121 
Date of Issue 2016-03-03 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685    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 IT2015-121 ISEC2015-80 WBS2015-104

Conference Information
Committee IT ISEC WBS  
Conference Date 2016-03-10 - 2016-03-11 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English) joint meeting of IT, ISEC, and WBS 
Paper Information
Registration To IT 
Conference Code 2016-03-IT-ISEC-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improved Key Rate of the Semi-Quantum Key Distribution Protocol 
Sub Title (in English)  
Keyword(1) quantum cryptgraphy  
Keyword(2) quantum key distribution  
Keyword(3) semi-quantum key distribution  
Keyword(4) SQKD  
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1st Author's Name Kento Yamada  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Ryutaroh Matumoto  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2016-03-10 15:05:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2015-121, ISEC2015-80, WBS2015-104 
Volume (vol) vol.115 
Number (no) no.500(IT), no.501(ISEC), no.502(WBS) 
Page pp.125-130 
#Pages 6 
Date of Issue 2016-03-03 (IT, ISEC, WBS) 

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