Engineering entanglement mechanically

TL;DR

This paper demonstrates how radiation pressure in a hybrid optomechanical system can generate stationary entanglement among a BEC, a vibrating mirror, and an optical field, highlighting potential quantum control in such systems.

Contribution

It introduces a novel scheme for entangling a Bose-Einstein condensate, a mechanical mirror, and an optical field within a single cavity system.

Findings

Stationary entanglement is generated among three bipartite subsystems.

Entanglement is sensitive to temperature increases.

The scheme provides a pathway for quantum information processing in hybrid systems.

Abstract

We propose entanglement for hybrid optomechanical system consisting of Bose-Einstein condensate (BEC) inside a single-mode high-Q Fabry-Perot cavity with a vibrating end mirror (mechanical mirror). The intracavity field couples the vibrating end mirror with collective atomic density of the BEC. We show that the radiation pressure generates the stationary entanglement of three bipartite subsystems, i.e, field-mechanical mirror, field-BEC and mechanical mirror-atoms. The resulting entanglement is fragile with respect to temperature.