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Secret key distribution over a long distance on a quantum network

Research Project

Project/Area Number 16K00014
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Theory of informatics
Research InstitutionShizuoka University

Principal Investigator

Owari Masaki  静岡大学, 情報学部, 准教授 (80723444)

Co-Investigator(Kenkyū-buntansha) 林 正人  名古屋大学, 多元数理科学研究科, 教授 (40342836)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords量子情報 / 量子ネットワーク / ネットワーク符号 / 量子鍵配送 / 量子通信 / 安全性評価 / 量子ネットワーク符号 / 量子暗号 / エンタングルメント / 量子力学 / ネットワーク通信 / 量子コンピュータ
Outline of Final Research Achievements

Here, we studied a secret communication on a quantum network. We especially focused on using network coding for improving security on quantum networks in order to complement a quantum key distribution (QKD) among nodes. As a result, we derive a sufficient condition for a quantum multiple-unicast network code to have a secrecy for Eve’s attack on a set of edges. Further, we develop a method for improving a security for Byzantine attacks on a relay scheme of keys generated by QKD by using classical network coding.

Academic Significance and Societal Importance of the Research Achievements

従来技術である量子鍵配送プロトコル(QKD)は、非常に強い安全性を保障するが、送受信者間で何度の通信を行う必要があるなど、コストの非常に高いプロトコルである。一方で、本研究で開発した手法を用いるとは、QKDよりも低いコストで、QKDよりも弱い安全性を得ることができる。また、本研究で開発した手法は、非物理層に属するプロトコルであるため、物理層のプロトコルであるQKDと同時に用いることで共存可能であるという特徴も持つ。このように、本研究結果は、従来手法であるQKDを補完する手法として、将来の量子ネットワークの安全性に寄与すると考えられる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (9 results)

All 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] ShanghaiTech University(中国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] ShanghaiTech University(中国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Single-shot secure quantum network coding on butterfly network with free public communication2017

    • Author(s)
      Masaki Owari,Go Kato, and Masahito Hayashi
    • Journal Title

      Quantum Science and Technology

      Volume: 3 Issue: 1 Pages: 014001-014001

    • DOI

      10.1088/2058-9565/aa8ac4

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single-Shot Secure Quantum Network Coding for General Multiple Unicast Network with Free Public Communication2017

    • Author(s)
      Go Kato, Masaki Owari, and Masahito Hayashi
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 10681 Pages: 166-187

    • DOI

      10.1007/978-3-319-72089-0_10

    • ISBN
      9783319720883, 9783319720890
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Secrecy and robustness for active attack in secure network coding2017

    • Author(s)
      Hayashi Masahito、Owari Masaki、Kato Go、Cai Ning
    • Journal Title

      Proceedings of 2017 IEEE International Symposium on Information Theory (ISIT)

      Volume: 1 Pages: 1172-1176

    • DOI

      10.1109/isit.2017.8006713

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Hilbert space structure induced by quantum probes2018

    • Author(s)
      Go Kato, Masaki Owari, Koji Maruyama
    • Organizer
      International Workshop on Quantum Information, Quantum Computing and Quantum Control,
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 中断可能な完全サンプリングのための量子アルゴリズム2018

    • Author(s)
      武田玲志, 尾張正樹
    • Organizer
      情報学シンポジウム2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] セキュア量子ネットワーク符号2017

    • Author(s)
      尾張正樹、林正人
    • Organizer
      量子情報と有限長理論の新展開
    • Place of Presentation
      名古屋大学
    • Year and Date
      2017-08-03
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Secrecy and Robustness for Active Attack in Secure Network Coding and its Application to Network Quantum Key Distribution2017

    • Author(s)
      Masahito Hayashi, Masaki Owari, Go Kato, and Ning Cai
    • Organizer
      10th International Conference on Information Theoretic Security
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2022-02-22  

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