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Affiliation |
Faculty of Environment and Information Sciences, Division of Social Environment and Information |
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Job Title |
Professor |
SEGAWA Etsuo
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Education 【 display / non-display 】
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2006.4-2009.3
Yokohama National University Doctor Course Completed
Degree 【 display / non-display 】
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Doctor of Engineering - Yokohama National University
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Master of Engineering - Yokohama National University
Campus Career 【 display / non-display 】
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2024.4
Duty Yokohama National UniversityFaculty of Environment and Information Sciences Division of Social Environment and Information Professor
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2022.4-2024.3
Duty Yokohama National UniversityFaculty of Environment and Information Sciences Division of Social Environment and Information Associate Professor
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2018.10-2022.3
Duty Yokohama National UniversityGraduate School Education Center Associate Professor
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2024.4
Concurrently Yokohama National UniversityCollege of Engineering Science Department of Mathematics, Physics, Electrical Engineering and Computer Science Professor
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2024.4
Concurrently Yokohama National UniversityInterfaculty Graduate School of Innovative and Practical Studies Professor
External Career 【 display / non-display 】
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2018.10
Associate Professor
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2014.9-2018.9
Associate Professor
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2012.4-2014.8
Assistant Professor
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2011.4-2012.3
Researcher
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2009.4-2011.3
Researcher
Academic Society Affiliations 【 display / non-display 】
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2019.4
日本応用数理学会
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2019.4
日本応用物理学会
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2007.4
日本数学会
Research Areas 【 display / non-display 】
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Natural Science / Basic mathematics / Quantum walk; Discrete mathematical model
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Natural Science / Applied mathematics and statistics
Books 【 display / non-display 】
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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 ）
Language：Japanese Book type：Scholarly book
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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 ）
Total pages：194 Language：Japanese Book type：Scholarly book
Papers 【 display / non-display 】
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Hosaka, T; Konno, N; Segawa, E
QUANTUM STUDIES-MATHEMATICS AND FOUNDATIONS 12 ( 1 ) 2025.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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A mathematical framework for maze solving using quantum walks
Leo Matsuoka, Hiromichi Ohno, Etsuo Segawa
Quantum Information Processing 24 ( 93 ) 2025.3
Language：English Publishing type：Research paper (scientific journal) Single Work
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Quantum walks on graphs embedded in orientable surfaces
Yusuke Higuchi and Etsuo Segawa
Annales de l'Institut Henri Poincaré D 2025.3
Language：English Publishing type：Research paper (scientific journal) Single Work
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Sensitivity of quantum walk to phase reversal and geometric perturbations: an exploration in complete graphs
Taisuke Hosaka, Renato Portugal, Etsuo Segawa
Interdisciplinary Information Sciences 2024.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
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On symmetric spectra of Hermitian adjacency matrices for non-bipartite mixed graphs
Higuchi, Y; Kubota, S; Segawa, E
DISCRETE MATHEMATICS 347 ( 5 ) 2024.5 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
Review Papers 【 display / non-display 】
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量子ウォーク梯子酒現象
瀬川 悦生
日本応用数理学会誌 35 ( 1 ) 14 - 28 2025.3 [Reviewed] [Invited]
Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Single Work
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A dynamical system induced by quantum walk
Higuchi, Y. and Segawa, E.
Journal of Physics A: Mathematical and Theoretical 52 ( 39 ) 2019
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Joint Work
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Staggered quantum walk on hexagonal lattices
Chagas, B. and Portugal, R. and Boettcher, S. and Segawa, E.
Physical Review A 98 ( 5 ) 2018
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Joint Work
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Localization of quantum walks via the CGMV method
Norio Konno and Etsuo Segawa
Quantum Information and Computation 11 ( 5{\&}6 ) 485 - 496 2011.5
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：Rinton Press Joint Work
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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
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Joint Work
Awards 【 display / non-display 】
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第二回オフシェル科学大賞
2024.10 ドレスト光子研究起点
Individual or group name of awards：瀬川悦生
Grant-in-Aid for Scientific Research 【 display / non-display 】
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量子ウォークが起因するグラフの組合わせ構造の研究
Grant number：24K06863 2024.4 - 2028.3
Grant-in-Aid for Scientific Research(C)
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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
Grant type：Competitive
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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
Grant type：Competitive
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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
Grant type：Competitive
Other external funds procured 【 display / non-display 】
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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
Presentations 【 display / non-display 】
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A comfortable graph embedding on closed surface for quantum walk
Etsuo Segawa [Invited]
11th International Conference on Quantum Simulation and Quantum Walks (QSQW2025)
Event date： 2025.1
Language：English Presentation type：Oral presentation (general)
Venue：Centro Congressi Federico II, Naples, Italy
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ドレスト光子の量子ウォークシミュレーションによる自律的移動経路とネットワークの幾何的構造の関係
瀬川悦生
一般社団法人レーザー学会学術講演会第45回年次大会
Event date： 2025.1
Language：Japanese Presentation type：Oral presentation (general)
Venue：広島国際会議場
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グラフの閉曲面埋め込みと量子ウォークの快適度
瀬川悦生
第36回位相幾何学的グラフ理論研究集会
Event date： 2024.11
Language：Japanese Presentation type：Oral presentation (general)
Venue：横浜国立大学
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d 次元半平面上の量子ウォークの挙動と CMV 行列
瀬川悦生 [Invited]
Non Commutative Probability and Related Topics
Event date： 2024.10
Language：Japanese Presentation type：Oral presentation (general)
Venue：九州大学
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量子ウォークは近道を探せるか？
瀬川悦生
日本応用物理学会
Event date： 2024.3
Language：Japanese Presentation type：Oral presentation (general)
Venue：東京都市大学
Charge of on-campus class subject 【 display / non-display 】
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2025 Stochastic Models
College of Engineering Science
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2025 Linear Algebra II
College of Engineering Science
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2025 Differential Equations I
College of Engineering Science
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2025 Probability and Statistics
College of Urban Sciences
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2025 Exercises in Applied Mathematics A
College of Urban Sciences
Social Contribution(Extension lecture) 【 display / non-display 】
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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
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)
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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
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
Audience： University students, Graduate students, Teachers, Researchers, General public, Other
Type：Seminar, workshop
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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
Audience： University students, Graduate students, Teachers, Researchers, General public
Type：Seminar, workshop
世話人代表
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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
Audience： University students, Graduate students, Teachers, Researchers, General public, Other
Type：Seminar, workshop
世話人代表