I am an Assistant Professor in the Computer Science Department at the Portland State University. I was a postdoctoral fellow at the Institute for Quantum Computing and the Department of Combinatorics and Optimization at the University of Waterloo during 2013 to 2016. I completed my PhD in 2013 in Computer Science and Engineering at the Pennsylvania State University, under the supervision of Prof. Sean Hallgren. Prior to that, I received my bachelor’s degree from University of Science & Technology of China in 2008.

My research interests lie in cryptography, especially in the presence of quantum attacks (a.k.a. post-quantum crypto), quantum algorithms, computational complexity and theoretical computer science broadly.


  • I am organizing a one-day event on quantum computing and cryptography at Portland, OR. Find the details here or a poster PDF.
  • I AM HIRING! I am looking for self-motivated students who are interested in pursuing a MS/PhD degree with me. Please feel free to reach me! Find more here.
  • Our department has a tenure-track faculty position available. Read more here. You will like it here!
  • I was at the Asia Forum on Post-quantum cryptography at Seoul, Korea during Nov 28 - 29, 2016. Recorded videos of the talks, including mine, can be found here.
  • I will serve on the program committee of PKC 2017 to be held at the artistic city of Amsterdam. Please submit your nice papers!