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Nobumasa Ishida (Ph.D.)

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College Degree: Ph.D. in Information Science and Technology, The University of Tokyo
Position: Project Researcher, Yamasaki Lab, Department of Information and Communication Engineering, Graduate School of Information Science and Technology, The University of Tokyo
Address: Faculty of Engineering Bldg.2 111C1, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8654, Japan
Background:
- 2026.04 - present: Project Researcher, Yamasaki Lab, Department of Information and Communication Engineering, Graduate School of Information Science and Technology, The University of Tokyo
- 2022.04 - 2026.03: Ph.D. in Information Science and Technology, Department of Information and Communication Engineering, Graduate School of Information Science and Technology, The University of Tokyo
- 2023.04 - 2025.03: Doctoral Course Research Fellowships of Japan Society for the Promotion of Science
- 2020.04 - 2022.03: Master's in Information Science and Technology, Department of Information and Communication Engineering, Graduate School of Information Science and Technology, The University of Tokyo
- 2016.04 - 2020.03: Department of Information and Communication Engineering, The University of Tokyo
- 2013.04 - 2016.03: Matsumoto Fukashi High School, Nagano

Nobumasa Ishida, Yoshihiko Hasegawa
Thermodynamic Recycling in Quantum Computing: Demonstration Using the Harrow-Hassidim-Lloyd Algorithm and Information Erasure
arXiv 2026, arXiv:2601.07522
Nobumasa Ishida, Yoshihiko Hasegawa
Energy Inference of Black-Box Quantum Computers Using Quantum Speed Limit
arXiv 2025, arXiv:2512.15472

Nobumasa Ishida, Yoshihiko Hasegawa
Quantum Computer-Based Verification of Quantum Thermodynamic Uncertainty Relation
Physical Review E, 2025, vol.112, 034124 (arXiv 2024, 2402.19293)
Nobumasa Ishida, Masashi Toyoda, Kazutoshi Umemoto, Koji Zettsu
Revealing spatiotemporal variations in areas potentially linked to COVID-19 spread using fine-grained population data
Scientific Reports , 2025, vol.15, 22636 (Open Access)
Nobumasa Ishida, Yoshihiko Hasegawa
Accelerated Jarzynski Estimator with Deterministic Virtual Trajectories
Physical Review E, 2022, vol.105, 054120

Demonstrating Thermodynamic Trade-Off Relations Using Quantum Computer
Nobumasa Ishida, Yoshihiko Hasegawa
Quantum Thermodynamics Conference 2024 (QTD2024), 2024, College Park, MD, USA
細胞の意思決定における理論的な精度限界
石田展雅, 長谷川禎彦
第61回日本生物物理学会年会, November 2023, Nagoya, Japan
Energy-accuracy trade-off in sensing first passage time
Nobumasa Ishida, Yoshihiko Hasegawa
StatPhys 28, 2023, Tokyo, Japan
閾値処理における精度と消費エネルギーのトレードオフ関係
石田展雅，長谷川禎彦
電子情報通信学会非線形問題研究会, August 2022, Online
携帯電話人口統計データと新規陽性者数の相関に着目したCOVID-19の感染リスク地区の抽出
石田展雅，豊田正史，梅本和俊，商海川，是津耕司
人工知能学会第35回全国大会 (JSAI), June 2021, Online

2022.03: Chair's Award for the Best Master Thesis, Department of Information and Communication Engineering, Graduate School of Information and Technology, The University of Tokyo
2020.03: Graduation Thesis Award, Department of Electrical and Electronic Engineering, Faculty of Engineering, The University of Tokyo