Professor Keisuke Fujii has built a multifaceted presence in quantum computing, spanning research, education, and industry. With more than 30% of his papers in the global top 10% cited, his contributions include developing Qulacs, an open-source quantum circuit simulator downloaded over 2 million times, and co-authoring acclaimed review articles on quantum algorithms.

He supervises over 30 students and postdocs, several of whom have become researchers in their own right. Notable work from his group includes advances in novel methods for fault-tolerant quantum computing, an essential step in building scalable quantum computers. As co-founder of QunaSys Inc., Japan’s leading quantum software startup, and through collaborative research with Fujitsu Limited, Fujii bridges academic research and practical applications.

Fujii’s public engagement includes supervising the world’s first permanent quantum computing exhibit at Miraikan in Tokyo, Japan, and creating QuantAttack, an educational game introducing quantum concepts to young people, contributing to Japan’s quantum workforce development and public awareness initiatives.