SEGAWA Etsuo

Affiliation

Faculty of Environment and Information Sciences, Division of Social Environment and Information

Job Title

Professor


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Education 【 display / non-display 】

  • 2006.4
    -
    2009.3

    Yokohama National University   Doctor Course   Completed

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Degree 【 display / non-display 】

  • Doctor of Engineering - Yokohama National University

  • Master of Engineering - Yokohama National University

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Campus Career 【 display / non-display 】

  • 2024.4
    　
    　

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Social Environment and Information   Professor  

  • 2022.4
    -
    2024.3

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Social Environment and Information   Associate Professor  

  • 2018.10
    -
    2022.3

    Duty   Yokohama National UniversityGraduate School Education Center   Associate Professor  

  • 2024.4
    　
    　

    Concurrently   Yokohama National UniversityInterfaculty Graduate School of Innovative and Practical Studies   Professor  

  • 2024.4
    　
    　

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mathematics, Physics, Electrical Engineering and Computer Science   Professor  

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External Career 【 display / non-display 】

  • 2018.10
    　
    　

      Associate Professor  

  • 2014.9
    -
    2018.9

      Associate Professor  

  • 2012.4
    -
    2014.8

      Assistant Professor  

  • 2011.4
    -
    2012.3

      Researcher  

  • 2009.4
    -
    2011.3

      Researcher  

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Academic Society Affiliations 【 display / non-display 】

  • 2019.4
    　
    　
     

    日本応用数理学会

  • 2019.4
    　
    　
     

    日本応用物理学会

  • 2007.4
    　
    　
     

    日本数学会

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Research Areas 【 display / non-display 】

  • Natural Science / Basic mathematics  / Quantum walk; Discrete mathematical model

  • Natural Science / Applied mathematics and statistics

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Books 【 display / non-display 】

  • 量子ウォークの新展開 : 数理構造の深化と応用

    今野紀雄, 井手勇介(分担執筆)（ Role： Contributor）

    培風館  （ ISBN:9784563011628 ）

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    Language：Japanese Book type：Scholarly book

  • 横浜発　確率統計入門

    今野紀雄、井手勇介、瀬川悦生、竹居正登、大塚一路（ Role： Joint author）

    産業図書  （ ISBN:9784782805121 ）

    Amazon

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    Total pages：194   Language：Japanese Book type：Scholarly book

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Papers 【 display / non-display 】

  • Survival probability of the Grover walk on the ladder graph

    E Segawa, S Koyama, N Konno and M Štefaňák

    Journal of Physics A: Mathematical and Theoretical   56 ( 215301 )   2023.5  [Reviewed]

    DOI

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    Language：English   Publishing type：Research paper (scientific journal)   Single Work  

  • Toward fixed point and pulsation quantum search on graphs driven by quantum walks with in- and out-flows: a trial to the complete graph

    Higuchi Yusuke, Sabri Mohamed, Segawa Etsuo

    QUANTUM STUDIES-MATHEMATICS AND FOUNDATIONS   2023.2  [Reviewed]

    DOI Web of Science

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

  • Quantum walks driven by quantum coins with two multiple eigenvalues

    Konno Norio, Sato Iwao, Segawa Etsuo, Shikano Yutaka

    QUANTUM STUDIES-MATHEMATICS AND FOUNDATIONS   10 ( 1 )   41 - 65   2023.2  [Reviewed]

    DOI Web of Science

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    Language：The in addition, foreign language   Publishing type：Research paper (scientific journal)   Joint Work  

  • Skeleton structure inherent in discrete-time quantum walks

    Yamagami Tomoki, Segawa Etsuo, Tanaka Ken'ichiro, Mihana Takatomo, Rohm Andre, Horisaki Ryoichi, Na … Show more authors

    PHYSICAL REVIEW A   107 ( 1 )   2023.1  [Reviewed]

    DOI Web of Science

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    Language：The in addition, foreign language   Publishing type：Research paper (scientific journal)   Joint Work  

  • Generalized discrete and ultradiscrete Burgers equations derived through the correlated random walk

    Fukuda Akiko, Segawa Etsuo, Watanabe Sennosuke

    JOURNAL OF DIFFERENCE EQUATIONS AND APPLICATIONS   29 ( 1 )   84 - 101   2023.1  [Reviewed]

    DOI Web of Science

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

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Review Papers 【 display / non-display 】

  • A dynamical system induced by quantum walk

    Higuchi, Y. and Segawa, E.

    Journal of Physics A: Mathematical and Theoretical   52 ( 39 )   2019

    DOI Scopus

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Joint Work  

  • Staggered quantum walk on hexagonal lattices

    Chagas, B. and Portugal, R. and Boettcher, S. and Segawa, E.

    Physical Review A   98 ( 5 )   2018

    DOI Scopus

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Joint Work  

  • Localization of quantum walks via the CGMV method

    Norio Konno and Etsuo Segawa

    Quantum Information and Computation   11 ( 5{\&}6 )   485 - 496   2011.5

    DOI

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher：Rinton Press   Joint Work  

  • Return probability of one-dimensional discrete-time quantum walks with final-time dependence

    Ide, Y. and Konno, N. and Machida, T. and Segawa, E.

    Quantum Information and Computation   11 ( 9-10 )   761 - 773   2011

    Scopus

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Joint Work  

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • 組合わせ的離散構造に対する量子ウォークの共鳴現象による逆問題的アプローチ

    2019.4 - 2022.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s)：瀬川 悦生

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    Grant type：Competitive

  • 量子ウォークから誘導される空間構造の解析

    2016.4 - 2018.3

    科学研究費補助金  Grant-in-Aid for Young Scientists(B)

    Investigator(s)：瀬川 悦生

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    Grant type：Competitive

  • 量子ウォークによるネットワークの構造解析に向けた研究

    2013.4 - 2016.3

    科学研究費補助金  Grant-in-Aid for Young Scientists(B)

    Investigator(s)：瀬川 悦生

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    Grant type：Competitive

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Other external funds procured 【 display / non-display 】

  • ドレスト光子に関わる基礎理論研究

    2018.10

    ドレスト光子研究起点

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Presentations 【 display / non-display 】

  • 固定点に収束する量子ウォークで駆動する量子探索の提案

    瀬川悦生  [Invited]

    第１４回　東京大学数理情報学談話会 

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    Event date： 2023.2

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 量子ウォークと組合わせ構造

    瀬川悦生  [Invited]

    直交デザインと関連する組み合わせ論 

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    Event date： 2023.1

    Language：Japanese   Presentation type：Oral presentation (general)  

  • Circuit equation for Grover walk

    Etsuo Segawa  [Invited]

    2022 Japan-China International Conference on matrix theory with applications 

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    Event date： 2022.12

    Language：English   Presentation type：Oral presentation (general)  

  • Grover walkの回路方程式

    瀬川悦生

    応用数学合同研究集会 

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

  • Combinatorial Graph Structures Induced by Quantum Walks

    Etsuo Segawa

    NOLTA2022 

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    Event date： 2022.12

    Language：English   Presentation type：Oral presentation (general)  

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Charge of on-campus class subject 【 display / non-display 】

  • 2024   Quantum Search Algorithm Ⅱ

    Interfaculty Graduate School of Innovative and Practical Studies

  • 2024   Quantum Search Algorithm Ⅰ

    Interfaculty Graduate School of Innovative and Practical Studies

  • 2024   Advanced Information Mathematics Ⅳ

    Interfaculty Graduate School of Innovative and Practical Studies

  • 2024   Literacy for Environment and Information Science Towards a Super Smart Society

    Graduate School of Environment and Information Sciences

  • 2024   Advanced Quantum Algorithm Exercise Ⅳ

    Graduate School of Environment and Information Sciences

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Social Contribution(Extension lecture) 【 display / non-display 】

  • 第5回Yokohama Workshop on Quantum Walks

    Role(s)： Consultant,　Other

    神奈川大学横浜キャンパス  2017.9

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    Audience： University students,　Graduate students,　Teachers,　Researchers,　Other

    Type：Seminar, workshop

    世話人: 瀬川悦生(東北大学, 世話人代表), 井手勇介(神奈川大学), 町田拓也(日本大学)

  • レーザー同位体分離の実用化における量子ウォークの数理

    Role(s)： Consultant,　Logistic support

    九州大学マスフォアインダストリ研究所  九州大学マスフォアインダストリ研究所  2017.7

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    Audience： Graduate students,　Teachers,　Researchers,　General public

    Type：Extension Lecture

    九州大学マスフォアインダストリ研究所 短期共同研究採択
    世話人:鈴木　章斗（信州大学工学部・准教授, 世話人代表）
    瀬川　悦生（東北大学情報科学研究科・准教授）
    横山　啓一（日本原子力研究開発機構 ・研究主幹）
    今野　紀雄（横浜国立大学大学院工学研究院・教授）
    松江　要（九大ＩＭＩ・助教）

  • International Workshop of Quantum Simulation and Quantum Walks 2015

    Role(s)： Chief editor,　Interviewer,　Consultant,　Logistic support

    Interdisciplinary Information Sciences  2016.11

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    Audience： University students,　Graduate students,　Teachers,　Researchers,　General public,　Other

    Type：Seminar, workshop

  • 量子系の数理と物質工学への応用II～量子ウォークを架け橋に～

    Role(s)： Logistic support,　Other

    統計数理研究所数学協働プログラム、JSPS-NRF, Japan-Korea Basic Scientific Cooperation Program “Non-commutative Stochastic Analysis; New Aspect of Quantum White Noise and Quantum Walks”  横浜国立大学  2016.10

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    Audience： University students,　Graduate students,　Teachers,　Researchers,　General public

    Type：Seminar, workshop

    世話人代表

  • 量子系の数理と物質工学への応用～量子ウォークを架け橋に～

    Role(s)： Consultant,　Logistic support,　Other

    統計数理研究所数学協働プログラム、東北大学重点戦略支援プログラム「数学をコアとするスマート・イノベーション融合研究共通基盤の構築と展開」  東北大学情報科学研究科棟  2014.9

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    Audience： University students,　Graduate students,　Teachers,　Researchers,　General public,　Other

    Type：Seminar, workshop

    世話人代表

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