[1]   1992.5  to  1994.9
University of Science and Technology of China  | Lecturer
[2]   1994.9  to  1996.9
Technical university of Darmstadt, Germany  | Alexander von Humboldt research fellow
[3]   1996.10  to  1998.1
International center for STEC, Japan  | ISTEC & STA research fellow
[4]   1998.1  to  1999.10
Simon Fraser University, Canada  | Postdoctoral research associate
[5]   1999.10  to  1999.12
Cryogenic Laboratory, Chinese Academy of Sciences, China  | Professor
[6]   2000.1  to  2014.6
Institute of Physics, Chinese Academy of Sciences, China  | Professor
[7]   2014.7 to  Now
International Center for Quantum Materials, School of Physics, Peking University, China  | Chair professor