This page contains some survey talks. Recent talks for research papers can be found here.
Quantum Advantages in Playing Games, The 6th Workshop on Quantum Information Sceince, Hong Kong Polytechnic University, Dec 2014.
On the Power of Randomness in Communication, Winter School 2010, CUHK, Jan 2010.
An Introduction to Quantum Computing in Theoretical Computer Science, Colloquium at Department of Physics, CUHK, April 2009.
Random Walk on Graphs and its Algorithmic Applications, Winter School 2009, CUHK, Jan 2009.