Dynamical Control of Order in a Cavity-BEC System

TL;DR

This paper explores how periodic driving of a pump laser can dynamically control order parameters in a cavity-BEC system, suppressing dominant orders, inducing subdominant ones, and stabilizing non-equilibrium states, including chaotic regimes.

Contribution

It introduces a method to manipulate and stabilize various orders in a cavity-BEC system through dynamical control, including non-equilibrium and chaotic states.

Findings

Superradiant transition can be controlled via periodic driving.

Subdominant Bose-Einstein condensation order can emerge.

Non-equilibrium density wave orders can be stabilized dynamically.

Abstract

We demonstrate dynamical control of the superradiant transition of cavity-BEC system via periodic driving of the pump laser. We show that the dominant density wave order of the superradiant state can be suppressed, and that the subdominant competing order of Bose-Einstein condensation emerges in the steady state. Furthermore, we show that additional, non-equilibrium density wave orders, which do not exist in equilibrium, can be stabilized dynamically. Finally, for strong driving, chaotic dynamics emerges.