Cavity-assisted energy relaxation for quantum many-body simulations

TL;DR

This paper introduces a cavity-assisted method for energy relaxation that enables cooling of strongly correlated spin systems into their ground states, with broad applicability in quantum simulation and computation.

Contribution

It presents a novel cavity quantum electrodynamics-based scheme for energy relaxation that works independently of the system’s energy level structure.

Findings

Effective cooling of strongly correlated spin systems demonstrated.

Scheme applicable to adiabatic quantum computation and dissipative entanglement.

Broadband driving fields enable relaxation regardless of energy profile.

Abstract

We propose an energy relaxation mechanism whereby strongly correlated spin systems decay into their ground states. The relaxation is driven by cavity quantum electrodynamics interaction and the decay of cavity photons. It is shown that by applying broadband driving fields, strongly correlated systems can be cooled regardless of the specific details of their energy level profile. The scheme would also have significant implications in other contexts, such as adiabatic quantum computation and steady-state entanglement in dissipative systems.