Professor of Physics, 교수
Korea Institute for Advanced Study (1998/9/1 - present)

Visting Professor, 방문교수
SITP, Stanford University (2008 Winter & Fall)

Member, 방문교수
Institute for Advanced Study, Princeton (2004 Fall)

Visiting Professor, 방문교수
University of Chicago (2001 Winter)

Postdoctoral Associate, 연구원
Newman Lab, Cornell University (1997/9/1 - 1999/5/10)

Postdoctoral Research Scientist, 연구원
Columbia University (1994/9/1 - 1997/8/31)

Ph.D.in Physics
California Institute of Technology (June 1994)

B.S.in Physics
Seoul National University (February 1987)