This project is led by Principal Investigator Yasuyuki Kawahigashi (RIKEN iTHEMS), together with three research groups headed by Sub-Project Leaders Akira Furusaki (RIKEN CEMS) and Bartosz Regula (RIKEN RQC). A mathematics group specializing in operator algebras, a condensed matter physics group specializing in topological phases, and a quantum information group specializing in quantum resource theory work together toward a unified theory of quantum information under noise.
Principal Investigator
Yasuyuki Kawahigashi
Principal Investigator (PI)
Deputy Director
Division of Fundamental Mathematical Science, RIKEN iTHEMS
Specializes in the theory of operator algebras and its applications to mathematical physics. Received his Ph.D. from UCLA in 1989 and subsequently worked at the Graduate School of Mathematical Sciences, the University of Tokyo. From 1991-1992 he was a postdoctoral fellow at UC Berkeley under Vaughan Jones, who founded quantum topology and received the Fields Medal for this work. His research on two-dimensional conformal field theory earned him the Spring Prize of the Mathematical Society of Japan; he has given an invited lecture at the International Congress of Mathematicians and is a Fellow of the American Mathematical Society. The 35 PhD students and 24 postdocs he has mentored are now active in 12 and 10 countries, respectively. Deputy Director, RIKEN iTHEMS since 2025.

Sub-Project Leaders
Akira Furusaki
Sub-Project Leader
Group Director
RIKEN CEMS

Bartosz Regula
Sub-Project Leader
RIKEN Hakubi Team Leader
RIKEN RQC
Mathematical Quantum Information RIKEN Hakubi Research Team | RIKEN

Kawahigashi Group (Mathematics)
Yoshiko Ogata
Professor
RIMS, Kyoto University
Recipient of the Henri Poincaré Prize, the Asahi Prize, and the Medal with Purple Ribbon, among others.

Yosuke Kubota
Associate Professor
Department of Mathematics, Kyoto University

Mayuko Yamashita
Hideki Yukawa Early Career Chair in Theoretical Physics
Perimeter Institute, Canada
Mayuko Yamashita | Perimeter Institute
Recipient of the Maryam Mirzakhani New Frontiers Prize, the Dannie Heineman Prize, among others.

Yuto Moriwaki
Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS

Masamichi Miyaji
Senior Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS

Masazumi Honda
Senior Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS

Furusaki Group (Condensed Matter Physics)
Ching-Kai Chiu
Senior Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS

Masazumi Honda
Senior Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS

Shunji Matsuura
Senior Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS

Kantaro Ohmori
RIKEN ECL Unit Leader
Category Theoretical Physics RIKEN ECL Research Unit, Division of Fundamental Mathematical Science, RIKEN iTHEMS

Shinsei Ryu
Professor
Princeton University, USA
Recipient of the New Horizons in Physics Prize, the Dirac Medal, among others.

Regula Group (Quantum Information)
Ryuji Takagi
Associate Professor
Graduate School of Arts and Sciences, The University of Tokyo

Shunji Matsuura
Senior Research Scientist
Division of Fundamental Mathematical Science, RIKEN iTHEMS
