California Institute of Technology, Physics, Math and Astronomy Division, Professor of Physics, 1999-present.

California Institute of Technology, Physics, Math and Astronomy Division, Associate Professor of Physics, 1995-1999.

Stanford University, Stanford Linear Accelerator Center, Panofsky Fellow.

Stanford University, Stanford Linear Accelerator Center, Research Associate,
1990-1992.

Ecole Normale Superieur, Paris, Atomic Physics Division, Poste Rouge Post Doctoral Fellow.

Yale University, Department of Biophysics and Biochemistry, Post Doctoral Fellow, 1987-1988.
Columbia University, Physics Department, PhD graduate student,
Superviser: Prof. J. Steinberger, 1982-1987.

II. Academic and Professional Honors and Affiliations

1999 Richard P. Feynman Award for Excellence in Teaching

1998 Associated Students of California Institute of Technology
Teaching Award: Honorable Mention
1997 Associated Students of California Institute of Technology
Teaching Award
1997 Alfred P. Sloan Fellow
1992-1995 Panofsky Fellow, Stanford Linear Accelerator Center

Since 1995 Member of American Physical Society

Since 2002 Member of International Society for Magnetic Resonance in Medicine