Curriculum Vitae
Date & Place of Birth  April 18 ,1978  Yokohama, JAPAN 

Education  April 2006  March 2009  Yokohama National University (PhD) 

March 2009  Degree, Doctor of Engineering "Limit theorems for quantum walks with multistate" Superviser / Norio Konno 
Work Experience  April 2009  March 2011  Department of Value and Decision Science, Tokyo Institute Technology, Project research fellow 

April 2011  March 2012  Department of Mathematical Informatics, University of Tokyo, Project research fellow 

April 2012July 2014  Collaborative Mathematics Reserch Unit, Graduate School of Information Science, Tohoku University Assistant professor 

August 2014September 2018  International Liaison Office, Graduate School of Information Science, Tohoku University Associate professor 

October 2018  Graduate School of Education Center, YOKOHAMA NATIONAL UNIVERSITY Associate professor 

January 2019  Graduate School of Environment and Information Sciences, YOKOHAMA NATIONAL UNIVERSITY Associate professor 
Publications
 R. Adami, R. Fukuizumi, E. Segawa,
 "A nonlinear quantum walk induced by a quantum graph with nonlinear delta potentials",
Quantum Information Processing (2019) 18:119.
LINK Masaya Maeda, Hironobu Sasaki, Etsuo Segawa, Akito Suzuki, Kanako Suzuki,
 "Dynamics of solitons for nonlinear quantum walks",
J. Phys. Commun. (2019).
LINK Bruno Chagas, Renato Portugal, Stefan Boettcher, and Etsuo Segawa,
 "Staggered quantum walk on hexagonal lattices",
Phys. Rev. A 98, 052310 (2018).
LINK Masaya Maeda, Hironobu Sasaki, Etsuo Segawa, Akito Suzuki, Kanako Suzuki,
 "Weak limit theorem for a nonlinear quantum walk",
Quantum Information Processing, (2018) 17:215.
LINK Mohamed Sabri, Etsuo Segawa, Martin Stefanak,
 "Conditional limit measure of onedimensional quantum walk with absorbing sink",
Physical Review A 98 (2018) 012136.
LINK S. Kubota, E. Segawa, T. Taniguchi, Y. Yoshie,
 "Periodicity of Grover walks on generalized Bethe trees",
Linear Algebra and its Applications 554 (2018) 371391.
LINK Masaya Maeda, Hironobu Sasaki, Etsuo Segawa, Akito Suzuki, Kanako Suzuki,
 "Scattering and inverse scattering for nonlinear quantum walks",
Discrete & Continuous Dynamical Systems A 38 (2018) 38353851.
LINK ChoonLin Ho, Yusuke Ide, Norio Konno, Etsuo Segawa, Kentaro Takumi,
 "A spectral analysis of discretetime quantum walks with related to birth and death chains”,
Journal of Statistical Physics 171 (2018) 207–219.
LINK K. Matsue, L. Matsuoka, O. Ogurisu and E. Segawa,
 "Resonanttunneling in discretetime quantum walk”,
Quantum Studies: Mathematics and Foundations 6 (2018) pp. 35–44.
LINK Yu. Higuchi and E. Segawa,
 "Quantum walks induced by Dirichlet random walks on infinite trees”,
Journal of Physics A: Mathematics and Theoretical 51 (2018) 075303.
LINK T. Endo, N. Konno, H. Obuse, E. Segawa,
 "Sensitivity of quantum walks to boundary of twodimensional lattices: approaches from the CGMV method and topological phases”,
Journal of Physics A: Mathematics and Theoretical 50 (2017) 455302.
LINK K. Matsue, O. Ogurisu and E. Segawa,
 "Quantum search on simplicial complexes”,
Quantum Studies: Mathematics and Foundations 5 (2017) pp 551–577.
LINK Chul Ki Ko, Norio Konno, Etsuo Segawa, Hyun Jae Yoo,
 "How does Grover walk recognize the shape of crystal lattice?”,
Quantum Information Processing 17 (2017) pp.167185.
LINK L. Matsuoka, E. Segawa, K. Yuki, N. Konno, N. Obata,
 "Asymptotic behavior of a rotational population distribution in a molecular quantumkicked rotor with ideal quantum resonance",
Physics Letter A 381 (2017) 1773–1779. Yu. Higuchi and E. Segawa,
 "The spreading behavior of quantum walks induced by drifted random walks on some magnifier graph",
Quantum Information and Computation 17 (2017) pp.03990414. N. Konno, I. Sato and E. Segawa,
 "The spectra of the unitary matrix of a 2tessellable staggered quantum walk on a graph",
Yokohama Mathematical Journal 62 (2017) pp. 5287. K. Matsue, O. Ogurisu and E. Segawa,
 "A note on the spectral mapping theorem of quantum walk models",
Interdisciplinary Information Sciences 23 (2017) pp.105—114. DOI: 10.4036/iis.2017.A.13 L. Matsuoka and E. Segawa,
 “Localization in rotational excitation of diatomic molecules induced by a train of optical pulses”,
Interdisciplinary Information Sciences 23 (2017) 5156. DOI: 10.4036/iis.2017.A.07 Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
 “Periodicity of the discretetime quantum walk on a finite graph”,
Interdisciplinary Information Sciences 23 (2017), 7586. DOI: 10.4036/iis.2017.A.10 R. Portugal and E. Segawa,
 “Connecting coined quantum walks with Szegedy’s model”,
Interdisciplinary Information Sciences 23 (2017) 119125. DOI: 10.4036/iis.2017.A.15. C. K. Ko, E. Segawa and H. J. Yoo,
 "Onedimensional threestate quantum walks: Weak limits and localization",
Infinite Dimensional Analysis, Quantum Probability and Related Topics 19, (2016) 1650025. DOI: 10.1142/S0219025716500259 T.Endo, N.Konno, E.Segawa, and M.Takei,
 "A onedimensional Hadamard walk with one defect",
Yokohama Mathematical Journal 60 (2015), 4990. A.Ichihara, L.Matsuoka, E.Segawa and K.Yokoyama,
 "Isotopeselective dissociation of diatomic molecules by terahertz optical pulses",
Physical Review A 91, 043404 (2015). E.Segawa,
 "Spectral properties of weighted line digraphs",
RIMS Kokyuroku 1956 (2015) 1628.
arXiv:1506.02855 E.Segawa and A.Suzuki,
 "Generator of an abstract quantum walk",
accepted for publication to Quantum Studies: Mathematics and Foundations 3 (2016), 1130.
DOI: 10.1007/s4050901600701. arXiv:1508.07473 K.Matsue, O.Ogurisu and E.Segawa,
 "Quantum walks on simplicial complexes",
Quantum Information Processing, 15, 18651896.
DOI10.1007/s1112801612476. arXiv:1507.01194 S.Endo, T.Endo, N.Konno, E.Segawa, and M.Takei,
 "Limit theorems of a twophase quantum walk with one defect",
Quantum Information and Computation 15 (2015) 1373–1396,
arXiv:1409.8134 S.Endo, T.Endo, N.Konno, E.Segawa, and M.Takei,
 "Weak limit theorem of a twophase quantum walk with one defect",
accepted for publication to Interdisciplinary Information Sciences,
arXiv:1412.4309 T. Machida and E. Segawa,
 "Trapping and spreading properties of quantum walk in homological structure",
Quantum Information Processing 14 (2015) 15391558.
arXiv:1405.1487 Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
 "Spectral and asymptotic properties of Grover walks on crystal lattices",
Journal of Functional Analysis 267 (2014) 4197–4235.
arXiv:1401.0154 Yusuke Higuchi, Norio Konno, Iwao Sato and E. Segawa,
 "A remark on zeta functions of finite graphs via quantum walks",
Pacific Journal of MathforIndustry 6 (2014) 73—84.
arXiv:1404.1553 Y. Ide, N. Konno, E. Segawa and X.P. Xu,
 "Localization of discrete time quantum walks on the glued trees",
Special Issue "Advances in Information Theory" 16 (2014), 15011514,
doi:10.3390/e16031501, arXiv:1312.114 N. Konno, E. Segawa,
 "Onedimensional quantum walks via generating function and the CGMV method",
Quantum Information Computation 14 (2014) 11651186,
arXiv:1305.1722 Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
 "A note on the discretetime evolutions of quantum walk on a graph",
Journal of MathforIndustry, 5 (2013), 103109,
arXiv:1207.4987 Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
 "Quantum graph walks II: quantum walks on covering graphs",
Yokohama Mathematical Journal 59 (2013), 5790,
arXiv:1211.4719 Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
 "Quantum graph walks I: mapping to quantum walks",
Yokohama Mathematical Journal 59 (2013), 3456,
arXiv:1211.0803 Norio Konno and Etsuo Segawa,
 "Weak convergence of complexvalued measure for biproduct path space induced by quantum walk",
Yokohama Mathematical Journal 59 (2013), 113,
arXiv:1208.6089 Norio Konno, Nobuaki Obata and Etsuo Segawa,
 "Localization of the Grover walks on spidernets and free Meixner laws",
Communications in Mathematical Physics, 322 (2013) 667695,
arXiv:1206.4422 N.Konno and E.Segawa,
 "On the entropy of decoherence matrix for quantum walks",
Yokohama Mathematical Journal 58 (2012), 6578,
arXiv:1202.1376. E.Segawa,
 "Localization of quantum walks induced by recurrence properties of random walks",
Journal of Computational and Theoretical Nanoscience:
Special Issue: "Theoretical and Mathematical Aspects of the Discrete Time Quantum Walk",10 (2013), 15831590,
arXiv:1112.4982. Y.Ide, N.Konno and E.Segawa,
 "Time averaged distribution of a discretetime quantum walk on the path",
Quantum Information Processing,11 (2012) 12071218, arXiv:1112.4036. N.Konno, T.Luczak and E.Segawa,
 "Limit measures of inhomogeneous discretetime quantum walks in one dimension",
Quantum Information Processing,12 (2013) 3353,
arXiv:1107.4462. K. Chisaki, N.Konno and E.Segawa,
 "Limit theorems for the discretetime quantum walk on a graph with joined half lines",
Quantum Information Computation 12, 0314333(2012),
arXiv:1009.1306 Y.Ide, N.Konno, T.Machida and E.Segawa,
 "Return probability of timedependent discretetime quantum walks on the line",
Quantum Information Computation 11,07610773(2011),
arXiv:1103.1180 K.Chisaki, N.Konno, E.Segawa and Y.Shikano,
 "Crossovers induced by discretetime quantum walks",
Quantum Information and Computation 11,07410760(2011),
arXiv:1009.2131 N.Konno and E.Segawa,
 "Localization of discretetime quantum walks on a half line via the CGMV method",
Quantum Information Computation 11,04850495(2011),
arXiv:1008.5109 Y.Shikano, K.Chisaki, E.Segawa and N.Konno,
 "Emergence of randomness and arrow of time in quantum walks",
Physical Review A 81,062129(2010),
arXiv:1001.3989 K.Chisaki, M.Hamada, N.Konno and E.Segawa,
 "Limit Theorems for quantum walks on trees",
Interdisciplinary Information Sciences 15,423429(2009),
arXiv:0903.4508 E.Segawa and N.Konno,
 "Limit theorems for quantum walks driven by many coins",
International Journal of Quantum Information 6,12311243(2008),
arXiv:0807.5074 N.Inui, N.Konno and E.Segawa,
 "Onedimensional threestate quantum walk",
Physical Review E 72,056112(2005),
arXiv:quantph/0507207 M.Hamada, N.Konno and E.Segawa,
 "Relation between coined quantum walks and quantum cellular automata",
RIMS Kokyuroku 1422,111(2005),
arXiv:quantph/0408100