Classical non-Gaussian state preparation through squeezing in an opto-electromechanical resonator

TL;DR

This paper demonstrates a method to generate and control non-Gaussian states in an opto-electromechanical system using parametric drive and feedback, surpassing classical noise limits and enabling quantum state preparation.

Contribution

The authors introduce a feedback-enhanced parametric drive technique for preparing non-Gaussian states in opto-electromechanical systems, extending capabilities beyond classical limits.

Findings

Thermo-mechanical noise squeezed beyond 3 dB limit.

Classical number-like and cat-like states successfully prepared.

Method is extendable to quantum regime.

Abstract

We demonstrate squeezing of a strongly interacting opto-electromechanical system using a parametric drive. By employing real-time feedback on the phase of the pump at twice the resonance frequency the thermo-mechanical noise is squeezed beyond the 3 dB instability limit. Surprisingly, this method can also be used to generate highly nonlinear states. We show that using the parametric drive with feedback on, classical number-like and cat-like states can be prepared. This presents a valuable electro-optomechanical state-preparation protocol that is extendable to the quantum regime.