Reservoir-engineered entanglement in optomechanical systems

TL;DR

This paper demonstrates how reservoir engineering in a three-mode optomechanical system can generate strong steady-state entanglement by cooling a delocalized mode, surpassing traditional entanglement bounds.

Contribution

It introduces a novel reservoir engineering approach that achieves higher steady-state entanglement than standard coherent methods in optomechanical systems.

Findings

Achieves strong steady-state entanglement surpassing traditional bounds.

Uses reservoir engineering to effectively cool a delocalized mode.

Entangling dynamics are optimal outside Markovian regimes.

Abstract

We show how strong steady-state entanglement can be achieved in a three-mode optomechanical system (or other parametrically-coupled bosonic system) by using one of the modes as a cold reservoir to effectively laser-cool a delocalized Bogoliubov mode. This approach allows one to surpass the bound on the maximum stationary intracavity entanglement possible with a coherent two-mode squeezing interaction. Unlike typical dissipative entanglement schemes, the entangling dynamics here are most effective in a regime where the effects of the engineered reservoir cannot be described by a Markovian Lindblad master equation.