Online Nuclear Theory Seminar

Date
Fri, Apr 16, 2021 2:00 pm - 3:00 pm

Description

Seminar will be conducted via zoom: https://umd.zoom.us/j/96371401158?pwd=ZWdmdkJ3cFNEQjBad0R4UWJVZWVwUT09

Speaker: Nathan Wiebe, University of Toronto

Title: New Quantum Simulation Methods for Fermionic Systems

Abstract: The ability of quantum computers to circumvent the fermionic sign problem has led to the possibility that quantum simulation may one day lead to practical solutions for solving strongly correlated electronic systems. In this talk I will discuss recent simulation results using several new methods, Qubitization, the interaction picture simulation method and Trotter-Suzuki simulation methods to lower the costs of simulating chemistry by five orders of magnitude from the original estimates given in 2016. In addition, I will discuss recent work by my collaborators and I that shows that effective QED can be simulated on a quantum computer using resources that are comparable to those required for non-relativistic simulations. This raises the possibility of near-term solutions to strongly correlated electronic systems where the role of pair production cannot be neglected. Both of these applications, interestingly, are best solved using different simulation methods suggesting that there is not a single best simulation method but rather a set of three different methods that each have their domain of applicability. A major point of this talk will be to identify the physical structures that these algorithms exploit and provide intuition for when each of the simulation algorithms should be applied.