Effective optoelectrical entanglement and strong mechanical squeezing in a multi-modulated optoelectromechanical system

TL;DR

This paper demonstrates enhanced entanglement and mechanical squeezing in a multi-modulated optoelectromechanical system by applying stepwise modulations to various system parameters, advancing quantum control of macroscopic devices.

Contribution

It introduces a novel multi-modulation approach to significantly improve entanglement and squeezing in an optoelectromechanical system with a macroscopic LC circuit and optomechanical components.

Findings

Enhanced entanglement between optical and LC modes via modulation.

Maximum entanglement depends mainly on voltage modulation.

Mechanical squeezing varies with system parameters.

Abstract

We propose effective generation of entangled and squeezed states in an optoelectromechanical system comprising of a macroscopic LC electrical circuit and an optomechanical system. We obtain enhanced entanglement between optical and LC circuit modes that are coupled via a common mechanical mode in the microwave regime. We achieve this enhancement by a stepwise application of modulation in the laser drive, the voltage drive and the spring constant of the moveable end-mirror. The maximum amount of entanglement is observed to be primarily dependent on the voltage modulation and changes slightly with the parameters of the spring constant. Alongside the generated entanglement, we also study the variation of the maximum degree of squeezing in the mechanical mode for different parameter regimes.