Exploring
Quantum World

Computational Materials Science Research Team

RESEARCH SUMMARY

One of our main focuses is to develop state-of-the-art numerical methods such as quantum Monte Carlo methods and tensor network methods including the density matrix renormalization method for simulating ground states as well as quantum dynamics of strongly correlated quantum systems. We are also interested in developing quantum algorithms for quantum many-body systems and quantum computing simulations using classical computers such as Supercomputer Fugaku, as a ground challenge of information science in quest of a new computing paradigm.

  • SUBMITTED PAPERS
  • PUBLICATIONS
  • Qing Xie, Kazuhiro Seki, Tomonori Shirakawa, Seiji Yunoki, “Digital quantum simulation of the Su-Schrieffer-Heeger model using a parameterized quantum circuit”arXiv:2504.07499
  • Satoshi Ejima, Kazuhiro Seki, Benedikt Fauseweh, Seiji Yunoki, “Probabilistic imaginary-time evolution in state-vector-based and shot-based simulations and on quantum devices”arXiv:2504.04958
  • Yuichi Otsuka, Kazuhiro Seki, Seiji Yunoki, “Quantum conditional mutual information as a probe of measurement-induced entanglement phase transitions”arXiv:2504.03472
  • Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki, Takami Tohyama, “Optical absorptions activated by an ultrashort halfcycle pulse in metallic and superconducting states of the Hubbard model”arXiv:2411.00313
  • Javier Robledo-Moreno, Mario Motta, Holger Haas, Ali Javadi-Abhari, Petar Jurcevic, William Kirby, Simon Martiel, Kunal Sharma, Sandeep Sharma, Tomonori Shirakawa, Iskandar Sitdikov, Rong-Yang Sun, Kevin J. Sung, Maika Takita, Minh C. Tran, Seiji Yunoki, Antonio Mezzacapo, “Chemistry Beyond Exact Solutions on a Quantum-Centric Supercomputer”arXiv:2405.05068
  • Kazuhiro Seki, Yuta Kikuchi, Tomoya Hayata, Seiji Yunoki “Simulating Floquet scrambling circuits on trapped-ion quantum computers”Phys. Rev. Research 7, 023032 (2025)
  • Koji Ishibashi et al. (37 authors including Kazuhiro Seki, Tomonori Shirakawa and Seiji Yunoki), “Research on Quantum Materials and Quantum Technology at RIKEN”ACS Nano
  • Yuichi Otsuka and Seiji Yunoki, “Kekule valence bond order in strained graphene”Joint March Meeting and April Meeting: APS Global Physics Summit 2025, Anaheim, USA (March 16-21, 2025)
  • Seiji Yunoki, “Utility scale quantum computing: From quantitative to quantitative computing”, Workshop on Quantum Computing Towards Utility Era with Quantum + HPC, Tokyo, Japan (March 10, 2025)
  • Yukio Nozaki, Hiroaki Sukegawa, Shinichi Watanabe, Seiji Yunoki, Taisuke Horaguchi, Hayato Nakayama, Kazuto Yamanoi, Zhenchao Wen, Cong He, Jieyuan Song, Tadakatsu Ohkubo, Seiji Mitani, Kazuki Maezawa, Daichi Nishikawa, Shun Fujii, Mamoru Matsuo, Junji Fujimoto, and Sadamichi Maekawa, “Gyro-spintronic material science using vorticity gradient in solids”Science and Technology of Advanced Materials 26, 2428153 (2025)

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