Presentation 2022-05-26
Construction of high-efficient information reconciliation method using polar codes and adaptive post selection for continuous-variable quantum key distribution
Yamaura Kensuke, Endo Hiroyuki, Yamashita Yuma, Okamoto Eiji, Toyoshima Morio,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Quantum key distribution using optical laser satellites has currently been attracting attention for its information-theoretic security in cryptographic communications. Conventional studies have shown that keys can be shared more efficiently by using polar codes in information matching, which generates shared keys from shared random numbers transmitted through quantum communication channels. However, the conventional studies were conducted in the field of discrete-variable quantum key distribution, and there had been few studies on techniques to improve the efficiency of key sharing in the field of continuous-variable quantum key distribution, that can be implemented at a lower cost and with a higher compatibility to optical laser satellites. Therefore, in this paper, we propose an application of polar codes for continuous quantum key distribution and a new information reconciliation method that improves sharing efficiency by applying an "elimination" region and adaptively changing the region width when making bit decisions. Numerical results show that the proposed method can achieve higher efficiency in key sharing than conventional information reconciliation methods.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) continuous-variable quantum key distribution / information reconciliation / polar code / post selection
Paper # WBS2022-11,RCC2022-11,SAT2022-11,MICT2022-11
Date of Issue 2022-05-18 (WBS, RCC, SAT, MICT)

Conference Information
Committee RCC / WBS / SAT / MICT
Conference Date 2022/5/25(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Joint Meeting of RCC, WBS, SAT, and MICT
Chair HUAN-BANG LI(NICT) / Masanori Hamamura(Kochi Univ. of Tech.) / Hiroyasu Ishikawa(Nihon Univ.) / Eisuke Hanada(Saga Univ.)
Vice Chair Shunichi Azuma(Nagoya Univ.) / Koji Ishii(Kagawa Univ.) / Takashi Shono(INTEL) / Masahiro Fujii(Utsunomiya Univ.) / Tetsushi Ikegami(Meiji Univ.) / Takana Kaho(Shonan Inst. of Tech.) / Hirokazu Tanaka(Hiroshima City Univ.) / Daisuke Anzai(Nagoya Inst. of Tech.)
Secretary Shunichi Azuma(CRIEPI) / Koji Ishii(Osaka Univ.) / Takashi Shono(National Defence Academy) / Masahiro Fujii(Chiba Univ.) / Tetsushi Ikegami(Chiba Univ. of Tech.) / Takana Kaho(KDDI Research) / Hirokazu Tanaka(NICT) / Daisuke Anzai(Yokohama National Univ.)
Assistant SHAN LIN(NICT) / Masaki Ogura(Osaka Univ.) / Sun Ran(Ibaraki Univ.) / Daisuke Goto(NTT) / Yuuki Koizumi(NHK) / Takahiro Ito(Hiroshima City Univ) / Kento Takabayashi(Okayama Pref. Univ.) / Takuya Nishikawa(National Cerebral and Cardiovascular Center Hospital)

Paper Information
Registration To Technical Committee on Reliable Communication and Control / Technical Committee on Wideband System / Technical Committee on Satellite Telecommunications / Technical Committee on Healthcare and Medical Information Communication Technology
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Construction of high-efficient information reconciliation method using polar codes and adaptive post selection for continuous-variable quantum key distribution
Sub Title (in English)
Keyword(1) continuous-variable quantum key distribution
Keyword(2) information reconciliation
Keyword(3) polar code
Keyword(4) post selection
1st Author's Name Yamaura Kensuke
1st Author's Affiliation Nagoya Institute of Technology(NITech)
2nd Author's Name Endo Hiroyuki
2nd Author's Affiliation National Institute of Information and Communications Technology(NICT)
3rd Author's Name Yamashita Yuma
3rd Author's Affiliation Nagoya Institute of Technology(NITech)
4th Author's Name Okamoto Eiji
4th Author's Affiliation Nagoya Institute of Technology(NITech)
5th Author's Name Toyoshima Morio
5th Author's Affiliation National Institute of Information and Communications Technology(NICT)
Date 2022-05-26
Paper # WBS2022-11,RCC2022-11,SAT2022-11,MICT2022-11
Volume (vol) vol.122
Number (no) WBS-42,RCC-43,SAT-44,MICT-45
Page pp.pp.52-57(WBS), pp.52-57(RCC), pp.52-57(SAT), pp.52-57(MICT),
#Pages 6
Date of Issue 2022-05-18 (WBS, RCC, SAT, MICT)