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Algebraic Graph Theory Seminar - Chris GodsilExport this event to calendar

Thursday, July 4, 2019 — 2:30 PM EDT

Title: Mutually unbiased bases

Speaker: Chris Godsil
Affiliation: University of Waterloo
Room: MC 5479

Abstract:

A pair of d x d unitary matrices is unbiased if M*N is at, i.e., all its entries have the same absolute value. A relatively simple argument shows that a set of pairwise unbiased unitary matrices has size at most d + 1. Constructions of sets that meet this bound are known only if d is a prime power, and the constructions are combinatorial (distance-regular graphs, finite geometry, difference sets). I will present an introduction to the topic.

Location 
MC - Mathematics & Computer Building
5479
200 University Avenue West

Waterloo, ON N2L 3G1
Canada

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