- 1966 – 1971, University of Tokyo, College of Arts and Sciences
- 1969 – 1970, Exchange student, Harvey Mudd College, U.S.A.
- 1971, B.S. (Arts and Sciences), University of Tokyo
- 1971 – 1975, University of Tokyo, Graduate School of Science, Department of Physics
- 1973, M.Sc. (Physics). University of Tokyo
- 1972 – 1973, Exchange student, University of Essex, U.K.
- 1974, M.Sc. (Computer Studies), University of Essex
- 1979, D.Sc. (Physics), University of Tokyo