Southwest Quantum Information and Technology

Practical quantum simulators for quantum field theory

Presenting Author: Gavin Brennen, Macquarie University
Contributing Author(s): G. Pupillo, E. Rico, T. M. Stace, S. Singh and D. Vodola

An exciting prospect for quantum simulators is to probe physics that is difficult to compute using analytical methods or classical numerical simulations. An especially compelling direction is to simulate quantum field theory. I will discuss two new approaches in this regard. The first is an analogue quantum simulation of 2+1 dimensional U(1) lattice gauge theory using superconducting fluxonium arrays which allows for non destructive measurements of non local order parameters including space like Wilson loops and 'tHooft strings. The second is a digital quantum simulation of the holographic principle for a critical 1+1 dimensional conformal field theory. The method uses an encoding based on Daubechies wavelets and can be realized as a multimode entangled Gaussian state of continuous variable systems using e.g. trapped ions or frequency modes in photonic networks. Extensions to interacting field theory are described.

Read this article online: https://arxiv.org/abs/1512.06565, https://arxiv.org/abs/1606.05068

(Session 5 : Thursday from 5:00pm - 7:00pm)