ATTENTION: Unsual room: G-415 Roger-Gaudry, UdeM
Condensed matter in two and three dimensions: Quantum simulations on a D-Wave processor
Andrew King, 1D-Wave Systems Inc., Burnaby, British Columbia, Canada. 2Vector Institute, MaRS Centre, Toronto, Ontario, Canada.
Quantum annealing processors developed and sold by D-Wave systems implement the transverse-field Ising model in superconducting flux qubits. Although the initial intention was to solve classical optimization problems using the adiabatic algorithm, new control knobs allow us to probe quantum systems with a significant transverse field. Here I will discuss two such experiments: first, an investigation of spin-glass / ferromagnetic / paramagnetic phase transitions in a 3D cubic lattice (Science 165, pp162-165, 2018); second, an investigation of a Kosterlitz-Thouless phase transition in a fully-frustrated 2D lattice (Nature 560, pp456-460, 2018). These demonstrations of programmable quantum simulation at mesoscopic scale represent a (non-universal) step towards Richard Feynman's vision of universal quantum simulators.
Andrew King is a performance researcher at D-Wave Systems. Since joining in 2013, his research has drifted from optimization algorithms towards performance enhancement in quantum annealing and simulation of condensed matter systems. He received his doctorate in computer science at McGill in 2009, and worked as a postdoctoral researcher at the Institute for Theoretical Informatics in Prague, Columbia University in New York, and Simon Fraser University in Burnaby. He is currently located in Montreal.
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