Steady state entanglement in the mechanical vibrations of two dielectric membranes

TL;DR

This paper demonstrates that two dielectric membranes inside a cavity can achieve steady state entanglement through laser cooling, enabling macroscopic quantum correlations in mechanical vibrations.

Contribution

It introduces a method to generate steady state entanglement between two macroscopic mechanical membranes using laser cooling inside a cavity.

Findings

Membranes can be cooled to a steady state with entanglement.

Steady state entanglement persists in mechanical vibrations.

Macroscopic degrees of freedom share quantum correlations.

Abstract

We consider two dielectric membranes suspended inside a Fabry-Perot-cavity, which are cooled to a steady state via a drive by suitable classical lasers. We show that the vibrations of the membranes can be entangled in this steady state. They thus form two mechanical, macroscopic degrees of freedom that share steady state entanglement.