Norman Tubman (UCB): "Quantum supremacy of many body quantum simulations: What is the state of the art classically, and what can be done on near term quantum computers?"

Wednesday 25 Apr 2018, 12:00 → 13:00 US/Pacific

4001 (50)

Abstract:

Quantum computers have seen significant advances in the last few years and an experimental realization of quantum supremacy is likely in the near future.  Initial demonstrations will serve as a proof of principle, but won't be relevant to the broader study of many-body quantum systems.  However, as quantum computing technology progresses, it will likely become useful for studying quantum systems and provide capabilities far beyond what is currently feasible in quantum chemistry and quantum physics simulations.  In this talk I discuss where we hope to first see results on a quantum computer surpassing what is achievable classically.  To understand this I review the state of the art in classical simulations, including our recently developed adaptive sampling configuration interaction method.     I will discuss the strengths and weakness of  both classical and quantum many body simulations, and using our best classical simulations I will discuss why the 2d interacting electronic systems might be a good place to use quantum computers to push the boundaries of quantum chemistry simulations.

Bio:   Norm Tubman received his Ph.D in physics at Northwestern University with Berni Alder.    During his thesis he studied quantum Monte Carlo methods and their use for simulating molecular and solid state systems. He did a postdoc at University of Illinois where he worked on quantum entanglement, high pressure simulations of hydrogen, and  non-adiabatic effects of molecular systems.  Currently he is a postdoc with Birgitta Whaley at U.C. Berkeley where he is working on simulating many body systems with both classical and quantum algorithms.