SEGAWA Etsuo

Affiliation

Graduate School Education Center

Job Title

Associate Professor



Graduate School 【 display / non-display

  • 2006.04
    -
    2009.03

    Yokohama National University    Doctor Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  Yokohama National University

  • Master of Engineering -  Yokohama National University

Campus Career 【 display / non-display

  • 2018.10
    -
    Now

    Duty   Yokohama National UniversityGraduate School Education Center   Associate Professor  

  • 2021.04
    -
    Now

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

  • 2018.10
    -
    Now

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

  • 2018.10
    -
    Now

    Concurrently   Yokohama National UniversityAdmission and Education Center   Associate Professor  

  • 2018.10
    -
    Now

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

External Career 【 display / non-display

  • 2018.10
     
     

      Associate Professor  

  • 2014.09
    -
    2018.09

      Associate Professor  

  • 2012.04
    -
    2014.08

      Assistant Professor  

  • 2011.04
    -
    2012.03

      Researcher  

  • 2009.04
    -
    2011.03

      Researcher  

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Quantum walk; Discrete mathematical model

 

Papers 【 display / non-display

  • A zeta function related to the transition matrix of the discrete-time quantum walk on a graph

    Norio Konno, Iwao Sato, Etsuo Segawa

    Discrete Mahtematics   344 ( 7 )   112412   2021.07  [Refereed]

    Joint Work

  • Eigenvalues of quantum walk induced by recurrence properties of the underlying birth and death process: application to computation of an edge state

    Y. Ide, N. Konno, E. Segawa

    Quantum Information and Processing   20 ( 160 )   2021.05  [Refereed]

    Joint Work

  • Generalized eigenfunctions for quantum walks via path counting approach

    Takashi Komatsu, Norio Konno, Hisashi Morioka, Etsuo Segawa

    Reviews in Mathematical Physics   33   1 - 24   2021.03  [Refereed]

    Joint Work

  • Limit theorem of the max-plus walk

    Sennosuke Watanabe, Akiko Fukuda, Etsuo Segawa, Iwao Sato

    RIMS Kokyuroku Bessatsu     2020.07  [Refereed]  [Invited]

    Joint Work

  • Eigenbasis of the Evolution Operator of 2-Tessellable Quantum Walks

    Yu. Higuchi, R. Portugal, I. Sato and Etsuo Segawa

    Linear Algebra and Its Applications   583   257 - 281   2019.12  [Refereed]

    Joint Work

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

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2019.04  -  2022.03  Investigator(s): Etsuo Segawa

  • Grant-in-Aid for Young Scientists(B)

    Project Year: 2016.04  -  2018.03  Investigator(s): Etsuo Segawa

  • Grant-in-Aid for Young Scientists(B)

    Project Year: 2013.04  -  2016.03  Investigator(s): Etsuo Segawa

Presentations 【 display / non-display

  • Relation between quantum walk and graph geometry

    Etsuo Segawa

    Towards Ultimate Quantum Theory  (Linneaus University, Vaxjo, Sweden)  2018.07.12  

  • Spectral analysis on the positive support of n-th power of Grover walk on a large girth graph

    N. Konno, I. Sato, E. Segawa

    The Japanese Conference on Combinatorics and its Applications 2018  (Sendai International Center in Sendai, Japan)  2018.05.22  

  • A structure theorem of positive support of Grover walk on graphs with a large girth

    N. Konno, I. Sato and E. Segawa

    7th Quantum Simulation and Quantum Walks  (Chapman University, California, USA)  2018.03.03  

  • Partition based quantum walk

    2017.09.12  

  • A construction of quantum walks and its spectral analysis

    Etsuo Segawa

    Mathematical Aspects of Quantum Fields and Related Topics  (Kyoto University)  2017.06.26  

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