I was the organizing committee chair for the 4th Workshop on Theory of Quantum Computation, Communication, and Cryptography (TQC 2009), held at the University of Waterloo, May 11-13, 2009 http://www.iqc.ca/tqc2009.
I co-organized the "Quantum Information and Graph Theory: emerging connections" workshop, Perimeter Institute, Waterloo, Canada, April 28 - May 2, 2008 http://www.perimeterinstitute.ca/qigt .
I co-organized a 3-day CIFAR workshop on quantum information, Newport, USA, October 2007 http://www.cifar.ca/mtgs/meetings.nsf/pages/qip-oct24-27-07
I co-organized a 3-day workshop on quantum algorithms, Institute for Quantum Computing, Waterloo, Canada, June 2007.
I was a co-organizer of the first Classical and Quantum Information Security workshop, held at Caltech in December 2005 www.cpi.caltech.edu/quantum-security/ .
I was a co-organizer of a CMS workshop on Mathematical Aspects of Quantum Information: east.camel.math.ca/Events/summer05/sched.html#qi .
I am also a co-organizer of the Fall 2006 Fields Institute Thematic Program in Cryptography www.fields.utoronto.ca/programs/scientific/06-07/crypto/index.html , and am main organizer of the Quantum Computation and Cryptography Workshop www.fields.utoronto.ca/programs/scientific/06-07/crypto/quantum/ .