May 7, 2025
Keio University
A joint research group, including Kaito Wada, a second-year student in the Ph.D. program at the Graduate School of Science and Technology, Keio University; Professor Naoki Yamamoto of the Department of Applied Physics and Physico-Informatics, Faculty of Science and Technology at the same university; and Associate Professor Nobuyuki Yoshioka of the International Center for Elementary Particle Physics at the University of Tokyo, has developed an adaptive quantum algorithm for efficiently and accurately measuring a large number of physical quantities for states realized on a quantum computer. This method achieves the "Heisenberg limit," the theoretical optimal precision, while also making significant improvements in terms of computation time and the number of required qubits. The results of this research represent a major step toward the practical application of quantum information processing. It is expected to serve as a cornerstone for the scientific application of fault-tolerant quantum computing and to contribute broadly to both industry and academia as a foundational technology for next-generation quantum algorithms.
Further details of this research were published online in the American scientific journal "PRX Quantum" on April 10, 2025 (U.S. Eastern Daylight Time).
Please see below for the full press release.