William Matthews

I am a research associate at the Statistical Laboratory of the University of Cambridge working with the Centre for Quantum Information and Foundations.

Research Interests

I 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 blocklength converse bounds for quantum channels",
W. M. and Stephanie Wehner,

"A linear program for the finite block length converse of Polyanskiy-Poor-Verdú via non-signalling codes",
arXiv:1109.5417, Information Theory, IEEE Transactions on, vol. 58, pp. 7036-7044, (2012).

"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, (2011).

"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, Commun. Math. Phys. 311, 97-111, (2012).

"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, Information Theory, IEEE Transactions on, vol.57, no.8, pp.5509-5523, (2011) .

"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.

Contact details