June 31, 2025
Mitsubishi Chemical Corporation
Keio University
JSR Corporation
Mitsubishi Chemical Group Corporation (Headquarters: Chiyoda-ku, Tokyo, President: Manabu Chikumoto), Keio University (Located: Minato-ku, Tokyo, President: Kohei Itoh), Softbank Corporation (Headquarters: Minato-ku, Tokyo, President: Junichi Miyakawa), and JSR Corporation (Headquarters: Minato-ku, Tokyo, President: Tetsuro Hori) have developed a method for energy gap calculation of large systems using quantum computers. This work is the result of collaborative efforts within the IBM Quantum Network Hub, a part of the Keio University Quantum Computing Center. The resulting manuscript has been published in the Proceedings of the National Academy of Sciences (PNAS) and can be accessed at the following URL: Tensor-based quantum phase difference estimation for large-scale demonstration | PNAS.
Fundamental advancements
Development of a tensor-based quantum phase difference estimation method, which combines energy gap calculation via quantum phase difference estimation with circuit compression via tensor networks
Expectations for high-resolution understanding of physical properties for large-scale molecules.
For further information, please refer to the following PDF file.