Name
SHIRAI, Tatsuhiko
Degree
PhD, Science
HP (URL)
https://sites.google.com/view/tatsuhiko-shirais-websitege/home
Status
Associate Professor
Research Topic
Research on non-adiabatic quantum computation and its application
This research focuses on exploring the performance limits of non-adiabatic quantum computation and its application. Since the operation time of current quantum computers is severely restricted due to errors, it is challenging to develop quantum algorithms that efficiently work within a short operation time. This study develops a fast ground-state generation method based on non-adiabatic quantum computation and offers effective solutions across various fields such as combinatorial optimization and quantum chemistry.
Monthly Spotlight
[Monthly Spotlight] is focusing on a researcher to introduce his/her research
Toward the practical applications of quantum technology
Education and Academic Employment
Education
| 2013-2016 | Department of Physics, Graduate School of Science, The University of Tokyo (Doctor) |
| 2011-2013 | Department of Physics, Graduate School of Science, The University of Tokyo (Master) |
| 2007-2011 | Department of Physics, Faculty of Science, The University of Tokyo (Bachelor) |
Academic Employment
| 2020-2024 | Assistant professor, Department of Computer Science and Communications Engineering, Waseda University |
| 2019-2020 | Researcher, Green Computing Systems Research Organization, Waseda University |
| 2017-2019 | Researcher, The Institute for Solid State Physics, The University of Tokyo |
| 2016 | Researcher, Advanced Institute for Materials Research, Tohoku University |
| 2013-2016 | Japan Society for the Promotion of Science, Research Fellowship for Young Scientists (DC1) |
| 2012-2016 | Advanced Leading Graduate Course for Photon Science |
Fields of Research Interests
Nonequilibrium statistical physics, Quantum computing
Academic Publications
- T. Mori, Shirai, “Symmetrized Liouvillian Gap in Markovian Open Quantum Systems”, Physical Review Letters 130 230404 (2023).
- Shirai, N. Togawa, “Spin-Variable Reduction Method for Handling Linear equality constraints in Ising machines”, IEEE Transactions on Computers 72 2151 (2023) .
- B. K. Chakrabarti, H. Leschke, P. Ray, Shirai, and S. Tanaka, “Quantum annealing and computation: challenges and perspectives”, Phil. Trans. Roy. Soc. A Math. Phys. Eng. Sci. 381 2241 (2023).
- Shirai, N. Togawa, “Multi-spin-flip engineering in an Ising machine”, IEEE Transactions on Computers 72 759 (2022).
- K. Tamura, Shirai, H. Katsura, S. Tanaka, N. Togawa, “Performance comparison of typical binary-integer encodings in an Ising machine”, IEEE Access 9 81032 (2021).
- Shirai, T. Shu, “Exact bounds for dynamical critical exponents of transverse-field Ising chains with a correlated disorder”, Annals of Physics 435 168483 (2021)
- H. Nakano, Shirai, T. Mori, “Tensor network approach to thermalization in open quantum many-body systems”, Physical Review E 103 L040102 (2021).
- T. Mori, Shirai, “Resolving a Discrepancy between Liouvillian Gap and Relaxation Time in Boundary-Dissipated Quantum Many-Body Systems”, Physical Review Letters 125 230604 (2020).
- Shirai, S. Tanaka, N. Togawa, “Guiding principle for minor-embedding in simulated-annealing-based Ising machines”, IEEE Access 8 210490 (2020).
- Shirai, T. Mori, “Thermalization in open many-body systems based on eigenstate thermalization hypothesis”, Physical Review E 101 042116 (2020).
- Shirai, S. Todo, S. Miyashita, “Dynamical phase transition in Floquet optical bistable systems: An approach from finite-size quantum systems”, Physical Review A 101 013809 (2020).
- Shirai, T. Nakamura, “Microscopic description of yielding in glass by persistent homology”, Journal of the Physical Society of Japan 88 074801 (2019).
- Shirai, S. Todo, H. de Raedt, S. Miyashita, “Optical bistability in a low-photon-density regime”, Physical Review A 98 043802 (2018).
- Shirai, T. Mori, S. Miyashita, “Floquet-Gibbs state in open quantum systems”, The European Physical Journal Special Topics 227 323 (2018).
- Shirai, J. Thingna, T. Mori, S. Denisov, P. Hänggi, S. Miyashita, “Effective Floquet-Gibbs states for dissipative quantum systems”, New Journal of Physics 18 053008 (2016).
- Shirai, T. Mori, “Conditions for emergence of the Floquet-Gibbs state in periodically driven open systems”, Physical Review E 91 030101 (2015).
- Shirai, T. Mori, and S. Miyashita, “Novel Symmetry-broken phase in a driven cavity system in the thermodynamic limit”, J. Phys. B 47 025501 (2013).
- S. Miyashita, Shirai, T. Mori, H. de Raedt, S. Bertaina, I. Chiorescu, “Photon and spin dependence of the resonance line shape in the strong coupling regime”, J. Phys. B 45 124010 (2012).
Other Interests
Go (board game), Searching for cooking ingredients
Affiliated Academic Organizations
The Physical Society of Japan
IEEE
Awards
2022年：16th Young Scientist Award of the Physical Society of Japan (division 11)
