William MatthewsI am a post-doc at the Institute for Quantum Computing of the University of Waterloo.
Research InterestsI am interested in quantum information theory. Recently I have been investigating the extent to which entanglement shared between a sender and receiver can assist in classical channel coding tasks, in particular zero-error coding. Another interest is in better understanding physical operations which can be performed on distributed systems by local operations and classical communication.
Selected Publications"Finite block length converse results for channel coding and assistance by non-signalling correlations"
W. M., arXiv:1109.5417 (2011).
"Entanglement-Enhanced Classical Communication over a Noisy Classical Channel"
(experimental work with the Quantum Optics and Quantum Information group at IQC),
R. Prevedel, Y. Lu, W. M., R. Kaltenbaek, K. J. Resch, arXiv:1010.2566, Phys. Rev. Lett. 106, 110505, (2010).
"Entanglement can increase asymptotic rates of zero-error classical communication over classical channels",
Debbie Leung, Laura Mancinska, W.M., Maris Ozols, Aidan Roy, arXiv:1009.1195, to appear in Comm. Math. Phys. (2010).
"Entanglement in channel discrimination with restricted measurements",
W.M., Marco Piani, John Watrous, arXiv:1004.0888, Phys. Rev. A 82, 032302, (2010).
"Zero-error channel capacity and simulation assisted by non-local correlations",
Toby S. Cubitt, Debbie Leung, W.M., Andreas Winter, arXiv:1003.3195, (to appear in IEEE Trans. Inf. T.) (2010).
"Improving zero-error classical communication with entanglement",
Toby S. Cubitt, Debbie Leung, W.M., Andreas Winter, arXiv:0911.5300, Phys. Rev. Lett. 104, 230503 (2010).
"Distinguishability of Quantum States Under Restricted Families of Measurements with an Application to Quantum Data Hiding",
W.M., Stephanie Wehner and Andreas Winter, arXiv:0810.2327, Commun. Math. Phys. 291 813-43 (2009).
A complete list can be found on the arXiv.