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Thursday, September 28, 2017 — 3:30 PM EDT

Title: Quantum Walks and State Transfer

Speaker: Christopher van Bommel
Affiliation: University of Waterloo
Room: MC 6486

Abstract:

Quantum walks are the quantum analogues of classical random walks and can be used to model quantum computations. If a quantum walker starts at a vertex of a graph and after some length of time, has probability 1 of being found at a different vertex, we say there is perfect state transfer between the two vertices.

Thursday, September 28, 2017 — 3:30 PM EDT

Title: The 1,2,3-Conjecture and a related problem for bipartite graphs

Speaker: Kasper Lyngsie
Affiliation: University of Waterloo
Room: MC 5479

Abstract:

Friday, September 29, 2017 — 3:30 PM EDT

Title: The quantum and private capacities of quantum channels, and the solution in the low-noise regime

Speaker: Debbie Leung
Affiliation: University of Waterloo
Room: MC 5501

Abstract:

We first summarize background on the quantum capacity of a quantum channel, and explain why we know very little about this fundamental quantity, even for the qubit depolarizing channel (the quantum analogue of the binary symmetric channel) despite 20 years of effort by the community.

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