7:30 pm, Wednesday, November 13th, 2019
2036 Main Mall, UBC Vancouver, V6T 1Z1
Quantum Annealing and Computation
Thomas F. Rosenbaum
Why climb mountains when you can tunnel through them? Harnessing quantum tunneling holds great promise to speed up solutions to optimization problems, ranging from design of circuit boards to protein folding. When computers optimize, they are doing the analog of the physical process of annealing. I will discuss experiments on disordered magnets that quantitatively compare quantum and classical annealing, and demonstrate quantum speedup for reasons that can be understood at a microscopic level. This type of computation follows from Richard Feynman's concept of a quantum computer, and underlies the power of D-Wave machines. Finally, I will discuss the possibility of programmability for spins in disordered magnetic systems, showing recent results from our Lab on quantum spin liquids.
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Additional resources for this talk: Slides (.pptx), Video (.mp4).