- 2019/04 - 現在 The University of Tokyo
- 2018/03 - 現在 The University of Tokyo
- 2013/04 - 現在 RIKEN Center for Emergent Matter Science Director
- 2008/04 - 現在 National Institute of Advanced Industrial Science and Technology (AIST) AIST Fellow
- 1995/04 - 現在 Professor, Dept. of Applied Physics, University of Tokyo
- 2010/04 - 2013/06 Quantum-Phase Electronics Center, University of Tokyo Director
- 2012/04 - 2013/03 Functional Emergent-matter Research Group, RIKEN Advanced Science Institute Group Director
- 2010/04 - 2013/03 Correlated Electron Research Group, RIKEN Advanced Science Institute Group Director
- 2007/10 - 2013/03 Cross-Correlated Materials Research Group RIKEN Advanced Science Institute Group Director
- 2006/10 - 2012/03 Multiferroics Project (MF), Exploratory Research for Advanced Technology Organization (ERATO), JST Research Director
- 2001/04 - 2008/03 Correlated Electron Research Center (CERC), AIST Director
- 2001/10 - 2006/09 Spin Superstructure Project (SSS),Exploratory Research for Advanced Technology Organization (ERATO), JST Research Director
- 1993/07 - 2002/03 Group Leader, Joint Research Center for Atom Technology (JRCAT)
- 1994/01 - 1995/03 Professor, Dept. of Physics, University of Tokyo
- 1986/07 - 1994/12 Associate Professor, Dept. of Physics, University of Tokyo
- 1984/08 - 1986/06 Lecturer, Dept. of Applied Physics, University of Tokyo
- 1981/04 - 1984/07 Research Associate, Dept. of Applied Physics, University of Tokyo