Curriculum Vitae
| Date & Place of Birth | April 18 ,1978 | Yokohama, JAPAN |
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| Education | April 2006 - March 2009 | Yokohama National University (PhD) |
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| 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 |
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| April 2011 - March 2012 | Department of Mathematical Informatics, University of Tokyo, Project research fellow |
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| April 2012-July 2014 | Collaborative Mathematics Reserch Unit, Graduate School of Information Science, Tohoku University Assistant professor |
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| August 2014-September 2018 | International Liaison Office, Graduate School of Information Science, Tohoku University Associate professor |
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| October 2018- | Graduate School of Education Center, YOKOHAMA NATIONAL UNIVERSITY Associate professor |
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| 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 one-dimensional 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) 371-391.
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) 3835-3851.
LINK- Choon-Lin Ho, Yusuke Ide, Norio Konno, Etsuo Segawa, Kentaro Takumi,
- "A spectral analysis of discrete-time 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,
- "Resonant-tunneling in discrete-time 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 two-dimensional 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.167--185.
LINK- L. Matsuoka, E. Segawa, K. Yuki, N. Konno, N. Obata,
- "Asymptotic behavior of a rotational population distribution in a molecular quantum-kicked 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.0399--0414.- N. Konno, I. Sato and E. Segawa,
- "The spectra of the unitary matrix of a 2-tessellable staggered quantum walk on a graph",
Yokohama Mathematical Journal 62 (2017) pp. 52--87.- 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) 51--56. DOI: 10.4036/iis.2017.A.07- Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
- “Periodicity of the discrete-time quantum walk on a finite graph”,
Interdisciplinary Information Sciences 23 (2017), 75--86. 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) 119-125. DOI: 10.4036/iis.2017.A.15.- C. K. Ko, E. Segawa and H. J. Yoo,
- "One-dimensional three-state 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 one-dimensional Hadamard walk with one defect",
Yokohama Mathematical Journal 60 (2015), 49-90.- A.Ichihara, L.Matsuoka, E.Segawa and K.Yokoyama,
- "Isotope-selective 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) 16-28.
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), 11-30.
DOI: 10.1007/s40509-016-0070-1. arXiv:1508.07473- K.Matsue, O.Ogurisu and E.Segawa,
- "Quantum walks on simplicial complexes",
Quantum Information Processing, 15, 1865-1896.
DOI10.1007/s11128-016-1247-6. arXiv:1507.01194- S.Endo, T.Endo, N.Konno, E.Segawa, and M.Takei,
- "Limit theorems of a two-phase 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 two-phase 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) 1539--1558.
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 Math-for-Industry 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), 1501-1514,
doi:10.3390/e16031501, arXiv:1312.114- N. Konno, E. Segawa,
- "One-dimensional quantum walks via generating function and the CGMV method",
Quantum Information Computation 14 (2014) 1165-1186,
arXiv:1305.1722- Yu. Higuchi, N. Konno, I. Sato and E. Segawa,
- "A note on the discrete-time evolutions of quantum walk on a graph",
Journal of Math-for-Industry, 5 (2013), 103-109,
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), 57-90,
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), 34-56,
arXiv:1211.0803- Norio Konno and Etsuo Segawa,
- "Weak convergence of complex-valued measure for bi-product path space induced by quantum walk",
Yokohama Mathematical Journal 59 (2013), 1-13,
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) 667-695,
arXiv:1206.4422- N.Konno and E.Segawa,
- "On the entropy of decoherence matrix for quantum walks",
Yokohama Mathematical Journal 58 (2012), 65-78,
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), 1583-1590,
arXiv:1112.4982.- Y.Ide, N.Konno and E.Segawa,
- "Time averaged distribution of a discrete-time quantum walk on the path",
Quantum Information Processing,11 (2012) 1207-1218, arXiv:1112.4036.- N.Konno, T.Luczak and E.Segawa,
- "Limit measures of inhomogeneous discrete-time quantum walks in one dimension",
Quantum Information Processing,12 (2013) 33-53,
arXiv:1107.4462.- K. Chisaki, N.Konno and E.Segawa,
- "Limit theorems for the discrete-time quantum walk on a graph with joined half lines",
Quantum Information Computation 12, 0314--333(2012),
arXiv:1009.1306- Y.Ide, N.Konno, T.Machida and E.Segawa,
- "Return probability of time-dependent discrete-time quantum walks on the line",
Quantum Information Computation 11,0761--0773(2011),
arXiv:1103.1180- K.Chisaki, N.Konno, E.Segawa and Y.Shikano,
- "Crossovers induced by discrete-time quantum walks",
Quantum Information and Computation 11,0741--0760(2011),
arXiv:1009.2131- N.Konno and E.Segawa,
- "Localization of discrete-time quantum walks on a half line via the CGMV method",
Quantum Information Computation 11,0485--0495(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 15,423--429(2009),
arXiv:0903.4508- E.Segawa and N.Konno,
- "Limit theorems for quantum walks driven by many coins",
International Journal of Quantum Information 6,1231--1243(2008),
arXiv:0807.5074- N.Inui, N.Konno and E.Segawa,
- "One-dimensional three-state quantum walk",
Physical Review E 72,056112(2005),
arXiv:quant-ph/0507207- M.Hamada, N.Konno and E.Segawa,
- "Relation between coined quantum walks and quantum cellular automata",
RIMS Kokyuroku 1422,1--11(2005),
arXiv:quant-ph/0408100