- "Bulk-edge correspondence in nonunitary Floquet systems with chiral symmetry"

, Dakyeong Kim, Norio Kawakami, and Hideaki Obuse__Ken Mochizuki__

＊Physical Review A**102**, 062202 (2020). ＊arXiv:1609.09650. - "Statistical properties of eigenvalues of the non-Hermitian Su-Schrieffer-Heeger model with random hopping terms"

, Naomichi Hatano, Joshua Feinberg, and Hideaki Obuse__Ken Mochizuki__

＊Physical Review E**102**, 012101 (2020). ＊arXiv:2005.02705. - "Topological Quantum Walk with Discrete Time-Glide Symmetry"

, Takumi Bessho, Masatoshi Sato, and Hideaki Obuse__Ken Mochizuki__

＊Physical Review B**102**, 035418 (2020). ＊arXiv:2004.09332. - "Stability of topologically protected edge states in nonlinear quantum walks: Additional bifurcations unique to Floquet systems"

, Norio Kawakami, and Hideaki Obuse__Ken Mochizuki__

＊Journal of Physics A: Mathematical and Theoretical**53**, 085702 (2020). ＊arXiv:1907.08464. - "Bulk-edge correspondence and stability of multiple edge states of a non-unitary three-step quantum walk with PT symmetry"

Makio Kawasaki,, Norio Kawakami, and Hideaki Obuse__Ken Mochizuki__

＊Progress of Theoretical and Experimental Physics, ptaa034 (2020). ＊arXiv:1905.11089. - "Observation of topological edge states in parity-time-symmetric quantum walks"

L. Xiao, X. Zhan, Z. H. Bian, K. K. Wang, X. Zhang, X. P. Wang, J. Li,, D. Kim, N. Kawakami, W. Yi, H. Obuse, B. C. Sanders, and P. Xue__K. Mochizuki__

＊Nature Physics**13**, 1117 (2017). - "Effects of Disorder on Non-unitary PT Symmetric Quantum Walks"

and Hideaki Obuse__Ken Mochizuki__

＊Interdisciplinary Information Sciences**23**, 95 (2017). ＊arXiv:1608.00719. - "Explicit definition of PT symmetry for nonunitary quantum walks with gain and loss"

, Dakyeong Kim, and Hideaki Obuse__Ken Mochizuki__

＊Physical Review A**93**, 062116 (2016). ＊arXiv:1603.05820.

__Ken Mochizuki__, Norio Kawakami, and Hideaki Obuse (oral,X46)

“Stability of topological edge states in nonlinear quantum walks: Bifurcations unique to Floquet systems”

American Physical Society March Meeting 2021, March 15-19, online__Ken Mochizuki__, Naomichi Hatano, Joshua Feinberg, and Hideaki Obuse (poster,06.0)

“Statistical Properties of the Non-Hermitian SSH Model and Symmetry Inheritance owing to Real Spectra”

American Physical Society March Meeting 2021, March 15-19, online__Ken Mochizuki__, Naomichi Hatano, Joshua Feinberg, and Hideaki Obuse (oral,T4-09)

“Statistical Properties of the Non-Hermitian SSH Model and Symmetry Inheritance owing to Real Spectra”

Localization 2020, August 24-29, online__Ken Mochizuki__, Takumi Bessho, Masatoshi Sato, and Hideaki Obuse (poster,PB-32)

“Time-glide symmetric topological quantum walk”

International Conference on Topological Materials Science, December 3-7, 2019, Kyoto University__Ken Mochizuki__, Naomichi Hatano, Joshua Feinberg, and Hideaki Obuse (poster)

“Statistical properties of eigenvalues in a non-Hermitian SSH model with random hopping terms”

Workshop NH2019, November 28-29, 2019, Institute of Industrial Science, University of Tokyo__Ken Mochizuki__, Norio Kawakami, and Hideaki Obuse (oral,invited)

“The stability of topological edge states in non-linear quantum walks:

Bifurcations unique to Floquet systems, revealed from non-unitary time-evolution operators”

Workshop NH2019, August 8-9, 2019, Institute of Industrial Science, University of Tokyo__Ken Mochizuki__, Norio Kawakami, and Hideaki Obuse (poster,P5)

“Bifurcations of topological edge states in non-linear quantum walks: originating from unique features to Floquet non-linear systems”

META2019, The 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, July 23-26, 2019, Instituto Superior Técnico, Portugal__Ken Mochizuki__, Norio Kawakami, and Hideaki Obuse (poster)

“PT symmetry and stability of edge states in nonlinear quantum walks”

Pseudo-Hermitian Hamiltonians in Quantum Physics, June 04-13, 2018, Ramanujan Lecture Hall, ICTS Bangalore, Karnataka, India__Ken Mochizuki__and Hideaki Obuse (poster,P42)

“PT symmetry and pseudo-unitarity of nonunitary quantum walks”

8th International Conference on Metamaterials, Photonic Crystals and Plasmonics, July 25-28, 2017, Songdo Convensia, Incheon-Seoul, South Korea- Hideaki Obuse,
__Ken Mochizuki__, Dakyeong Kim, and Norio Kawakami (oral)

“Floquet Topological Phases in PT Symmetric Passive Hadamard Quantum Walks”

8th International Conference on Metamaterials, Photonic Crystals and Plasmonics, July 25-28, 2017, Songdo Convensia, Incheon-Seoul, South Korea - Hideaki Obuse,
__Ken Mochizuki__, Dakyeong Kim, and Norio Kawakami (oral)

“Floquet Topological Phases in PT symmetric Quantum Walks with Gain and Loss”

CLEO / Europe-EQEC 2017, June 25-29, 2017, Munich, Germany - Hideaki Obuse,
__Ken Mochizuki__, Dakyeong Kim, and Norio Kawakami (oral)

“Floquet topological phases in PT symmetric non-unitary quantum walks: theory and experiment”

Non-Hermitian Hamiltonians in Physics: Theory and Experiment, May 15-19, 2017, Bad Honnef, Germany - H. Obuse,
__K. Mochizuki__, D. Kim, N. Kawakami, L. Xiao, X. Zhan, Z. H. Bian, K. K. Wang, X. Zhang, X. P. Wang, J. Li, W. Yi, B. Sanders, P. Xue (oral)

“Observation of edge states of Floquet topological phases in PT symmetric quantum walks”

International Conference on Topological Material Science 2017, May 9-13, 2017, Tokyo Institute of Technology __Ken Mochizuki__, Dakyeong Kim, Norio Kawakami, and Hideaki Obuse (poster,15)

“Topological phases in PT symmetric nonunitary quantum walks”

International School on Topological Science and Topological Matters, February 13-18, 2017, Kyoto University- Hideaki Obuse,
__Ken Mochizuki__, Dakyeong Kim, and Norio Kawakami (oral)

“Floquet Topological Phases Driven by PT Symmetric Non-unitary Time Evolution”

Topological Material Science 2 nd Annual Meeting, December 12-18, 2016, Tohuku University __Ken Mochizuki__and Hideaki Obuse (poster,Pos-8)

“PT symmetry for nonunitary quantum walks and the extension to disordered systems”

Progress in Quantum Physics with Non-Hermitian Operator, August 08-12, 2016, Kyoto University- Hideaki Obuse,
__Ken Mochizuki__, Dakyeong Kim, and Norio Kawakami (oral)

“Floquet topological phases of non-unitary quantum walks with PT symmetry”

Progress in Quantum Physics with Non-Hermitian Operator, August 08-12, 2016, Kyoto University __Ken Mochizuki__, Dakyeong Kim, and Hideaki Obuse (poster)

“Topological phases and enhancement of edge states in PT symmetric quantum walks with gain and loss”

Workshop of Quantum Simulation and Quantum Walks 2015, November 16-18, Yokohama National University