Projects

Research projects and grants related to the Ueda Group.

Ongoing Projects

Electric-Field-Active Magnetic Excitations in Frustrated Quantum Spin Systems
Period: 2026-04 – 2029-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B)
Role: Co-I
Investigators: Shin Miyahara, Nobuo Furukawa, Isao Maruyama, Hiroshi Ueda, Tomoki Hirosawa, Daisuke Yamamoto
Design and Development of Quantum–Classical Hybrid Computational Principles for Quantum Many-Body Systems
Period: 2026-04 – 2029-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grant-in-Aid for Scientific Research (C)
Role: PI
Investigators: Shohei Miyakoshi
Quantum-Classical Hybrid Approaches Mediated by Tensor Networks
Period: 2024-10 – 2030-03
Funding: Japan Science and Technology Agency (JST)
Program: CREST
Role: PI
Investigators: Hiroshi Ueda, Hidemaro Suwa, Kouichi Okunishi
Electronic Structure Calculations for Quantum Chemistry via Hybrid NISQ–HPC Computing with QSCI Post-Processing
Period: 2024-07 – 2027-03
Funding: SoftBank Corp.
Program: QSRH Industry Collaboration Program
Role: PI
Investigators: Hiroshi Ueda, Wataru Mizukami, Yuichiro Yoshida, Shohei Miyakoshi, Haruo Komiyama, Toshihiro Aoki, Yoshiaki Shimada
Quantum–Supercomputer Hybrid Platform for Expanding Computational Frontiers
Period: 2023-11 – 2028-10
Funding: New Energy and Industrial Technology Development Organization (NEDO)
Program: Post-5G Information and Communication System Infrastructure R&D Program
Role: Co-I
Investigators: Mitsuhisa Sato, Hirotora Tamba, Kengo Nakajima, Hiroshi Ueda

Past Projects

Theoretical Study of Magnetization Processes in Quantum Spin Systems under Extreme Environments
Period: 2025-04 – 2029-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grant-in-Aid for Scientific Research (C)
Role: PI
Investigators: Katsuhiro Morita
Next-Generation Quantum Many-Body Simulation Algorithms for Practical Quantum Computing
Period: 2024-04 – 2026-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grant-in-Aid for Early-Career Scientists
Role: PI
Investigators: Shohei Miyakoshi
Study of Magneto-Optical Phenomena in Topological Magnets due to Magneto-Electric Effects
Period: 2022-04 – 2025-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Investigators: Nobuo Furukawa, Isao Maruyama, Hiroshi Ueda, Daisuke Yamamoto, Shin Miyahara
The Natural Laws of Extreme Universe -- A New Paradigm for Spacetime and Matter from Quantum Information
Period: 2021-09 – 2026-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)
Role: Co-I
Investigators: Tadashi Takayanagi, Tomoyuki Morimae, Yoshifumi Nakata, Norihiro Iizuka, Masaki Tezuka, Shuta Nakajima, Akihiro Ishibashi, Tsuyoshi Yusa, Masahiro Hotta, Tetsuya Shiromizu, Keisuke Izumi, Tsutomu Kobayashi, Tatsuma Nishioka, Kouichi Okunishi, Chisa Hotta, Hiroshi Ueda
Quantum many-body systems and tensor networks from quantum information perspectives
Period: 2021-09 – 2026-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)
Role: Co-I
Investigators: Kouichi Okunishi, Hiroshi Ueda, Hosho Katsura, Chisa Hotta, Kenji Harada
Quantum-classical hybrid quantum computing for quantum many-body systems
Period: 2021-04 – 2025-03
Funding: Japan Society for the Promotion of Science (JSPS)
Program: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
Role: Co-I
Investigators: Seiji Yunoki, Hiroshi Ueda, Shigetoshi Sota, Hiroaki Matsueda
Advancement of data compression technique for quantum states by tensor networks
Period: 2019-10 – 2023-03
Funding: Japan Science and Technology Agency (JST)
Program: PREST
Role: PI
Investigators: Hiroshi Ueda
Quantum Many-Body Simulator Using Tensor Networks and Quantum Computers
Period: 2018-11 – 2020-03
Funding: Information-technology Promotion Agency, Japan（IPA）
Program: MITOU Target Program (Gate-Based Quantum Computing)
Role: PI
Investigators: Hiroshi Ueda, Otsuka Yuichi, Maho Nakata
Advanced Density-Matrix Renormalization Group Methods with Point-Group Symmetry
Period: 2017-04 – 2021-03
Funding: Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Program: Grants-in-Aid for Scientific Research (Grant-in-Aid for Young Scientists (B))
Role: PI
Investigators: Hiroshi Ueda
Field-Induced Topological Phase Transitions in Frustrated Quantum Spin Systems
Period: 2017-04 – 2020-03
Funding: Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Program: Grants-in-Aid for Scientific Research (Grant-in-Aid for Grant-in-Aid for Scientific Research (B))
Role: Co-I
Investigators: Shin Miyahara, Nobuo Furukawa, Isao Maruyama, Daisuke Yamamoto, Hiroshi Ueda
Optimization of Tensor-Network States via Higher-Order Singular Value Decomposition
Period: 2013-04 – 2017-03
Funding: Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Program: Grants-in-Aid for Scientific Research (Grant-in-Aid for Young Scientists (B))
Role: PI
Investigators: Hiroshi Ueda
Non-Abelian DMRG Methods for Two-Dimensional Quantum Spin Systems
Period: 2012-04 – 2015-03
Funding: RIKEN
Program: Special Postdoctoral Researcher Program
Role: PI
Investigators: Hiroshi Ueda
Matrix-Product Variational Optimization Beyond Density-Matrix Renormalization Group
Period: 2010-04 – 2012-03
Funding: Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Program: Grant-in-Aid for JSPS Fellows
Role: PI
Investigators: Hiroshi Ueda