Andrew M. Childs, Richard Cleve, Enrico Deotto, Edward Farhi, Sam Gutmann, Daniel A. Spielman. Exponential algorithmic speedup by a quantum walk. In Proceedings of the 35th Annual ACM Symposium on Theory of Computing, June 9-11, 2003, San Diego, CA, USA. pages 59-68, ACM, 2003. [doi]
Abstract is missing.