I was born in Tsingtao, China and received my Ph.D in mathematics from UCSD in 1993. I was an assistant Professor of Mathematics at University of Michigan from 1993–1996 and Professors of Mathematics at Indiana University at Bloomington from 1996–2007 (1996–1997 on leave as an NSF postdoc at UCSD and 2005–2007 on leave at Microsoft). I am a Professor of Mathematics at UCSB since 2012 (on indefinite leave) and a Distinguished Visiting Research Chair at Perimeter Institute for Theoretical Physics since 2013. I have been a researcher at Station Q since 2005. My main interests are quantum mathematics, theoretical models of topological phases of matter, and their application to quantum physics and quantum computing.
1. Personal website at UCSB:
2. A colloquium talk at Perimeter Institute for Theoretical Physics on TQFTs in Nature and topological quantum computation:
3. A talk at KITP on (3+1)-TQFTs and topological insulators—the so-called Walker-Wang model:
4. Some more recoded talks.
a) A talk at IPAM at UCLA on symmetry, defects and gauging of 2D topological phases:
b) Various talks at Simons center for geometry and physics:
c) More talks at PI:
f) More talks at KITP:
g) The first three is a marathon informal talk at D. Sullivan’s famous Einstein chair seminar—more than 5 hours of total recording of the same talk on Oct 5, 1999 and the talk-discussion lasted from noon to 8pm:
Oct 5, 1999:
Nov 21, 2000: