井村 健一郎／Ken-Ichiro Imura, Dr.

E-mail: imura[at]iis.u-tokyo.ac.jp

Research field: condensed-matter physics, theory
Current research topics: non-Hermitian systems, topological insulators, quantum entanglement

Currently affiliated to:

Institute of Industrial Science , The University of Tokyo
Researcher, in the group of Prof. Naomichi Hatano

News!

1. My first scientific visit at IIT Madras (Chennai); Indian Institute of Technology,--> here
   Jan 30 - Feb 9, 2024; c/o Prof. Yasir Iqbal
   
   
2. Our latest paper (Paper [1] in the list below) has been assigned to #PRBTopDownload.

Talks and seminars:

1. "From topological matter to non-Hermitian quantum mechanics" (Monday 30 October 2023, 12:00pm)
   ICN2 seminar at Catalan Institute of Nanoscience and Nanotechnology;
   c/o Prof. Stephan Roche (Theoretical and Computational Nanoscience Group)
   
   
2. "Entanglement dynamics in the many-body Hatano-Nelson model" (August 16, 12:10-12:30)
   in Non-Hermitian Topology: from Classical Optics to Quantum Matter (nhtop23),
   August 14-18, 2023, Max Plank Institute for the Physics of Complex Systems (MPIPKS), Dresden, Germany.
   
   
3. “Entanglement dynamics in the many-body Hatano-Nelson model”
   [T8b-11C-05] (Fri. Aug 11, 3:15 PM - 3:30 PM)
   in STATPHYS28: The 28th IUPAP International Conference on Statistical Physics,
   August 7th-11th, 2023, The Univeristy of Tokyo, Hongo Campus.
   
   
4. “Entanglement dynamics in a non-Hermitian quantum system,”
   Séminaire du LPTMS (Hybrid: onsite seminar + zoom), Date/Time : 02/05/2023 - 11:00 - 12:00,
   c/o Prof. Christophe Texier, Laboratoire de Physique Théorique et Modèles Statistiques (Bât. 530), Univ. Paris-Saclay, 91405 Orsay, France.
   
   
5. “Entanglement dynamics in a non-Hermitian quantum system”
   Session G66: Open Quantum Systems I, 11:30 AM–2:42 PM, Tuesday, March 7, 2023
   APS March Meeting 2023, Las Vegas, Nevada (March 5-10);
   
   
6. “Wave-packet and entanglement dynamics in a non-Hermitian quantum system”
   SFU Condensed Matter Seminar, March 1, 2023
   c/o Prof. Igor Herbut, Simon-Fraser University (Faculty of Science, Department of Physics), BC, Canada,

Lectures (teaching):

1. "Introduction to Quantum Mechanics" (in English), 2023 autumn-
   Faculty of Science and Technology, Sophia University, Tokyo
   c/o Prof. Tomi Ohtsuki
   
   
2. "Quantum Statistical Mechanics" (in Japanese), 2024 spring-
   Faculty of Science and Technology, Sophia University, Tokyo
   c/o Prof. Tomi Ohtsuki

Books:

1. Naomichi Hatano, Ken-Ichiro Imura, “Non-Hermitian quantum mechanics” (in Japanese)
   Kodansya Scientific, 2023; ISBN: 978-4-06-532244-4.
   also available here.
   
   
2. Koji Kobayashi, Tomi Ohtsuki, and K.-I. Imura, “Topological matter in the absence of translational invariance,” (Chapter 4)
   in "Advanced Topological Insulator" , WILEY-Scrivener Publishing LLC, ISBN: 9781119407294, pp.109-158 (2019).

Papers (published in the last five years):

1. “Entanglement dynamics in the many-body Hatano-Nelson model”,
   Takahiro Orito, Ken-Ichiro Imura, Phys. Rev. B 108, 214308 (2023)
   #PRBTopDownload
   
   
2. “Probability Conservation and Localization in a One-Dimensional Non-Hermitian System”,
   Yositake Takane, Shion Kobayashi, and Ken-Ichiro Imura, J. Phys. Soc. Jpn. 92, 104705 (2023).
   
   
3. “Wave-packet and entanglement dynamics in a non-Hermitian many-body system”,
   Takahiro Orito, Ken-Ichiro Imura, JPS Conf. Proc. 38, 011187 (2023).
   
   
4. “Multi-Dimensional Quantum Walks: a Playground of Dirac and Schrödinger Particles”,
   Manami Yamagishi, Naomichi Hatano, Ken-Ichiro Imura, Hideaki Obuse, Phys. Rev. A 107, 042206 (2023).
   
   
5. “Unusual wave-packet spreading and entanglement dynamics in non-Hermitian disordered many-body systems”,
   Takahiro Orito, Ken-Ichiro Imura, Phys. Rev. B 105, 024303 (2022)
   
   
6. “Multifractality and Fock-space localization in many-body localized states: one-particle density matrix perspective”
   Takahiro Orito, Ken-Ichiro Imura, Phys. Rev. B 103, 214206 (2021).
   
   
7. “Non-Hermitian Fabry-Perot Resonances in a PT-symmetric system”,
   K. Shobe, K. Kuramoto, K.-I. Imura, N. Hatano, Phys. Rev. Research 3, 013223 (2021).
   
   
8. "Theory of nonequilibrium noise in general multiterminal superconducting hybrid devices: Application to multiple Cooper pair resonances"
   R. Jacquet, A. Popoff, K.-I. Imura, J. Rech, T. Jonckheere, L. Raymond, A. Zazunov, and T. Martin, Phys. Rev. B 102, 064510 (2020).
   
   
9. "Generalized Bloch band theory for non-Hermitian bulk–boundary correspondence"
   Ken-Ichiro Imura, Yositake Takane, Progress of Theoretical and Experimental Physics, 2020, 12A103.
   
   
10. "Finite-size effects in cylindrical topological insulators"
    Michele Governale, Bibek Bhandari, Fabio Taddei, Ken-Ichiro Imura, Ulrich Zülicke, New J. Phys. 22, 063042 (2020).
    
    
11. “Generalized bulk-edge correspondence for non-Hermitian topological systems”
    Ken-Ichiro Imura, Yositake Takane, Phys. Rev. B 100, 165430 (2019).