Steady-state mechanical squeezing in a double-cavity optomechanical system

TL;DR

This paper proposes a double-cavity optomechanical system that achieves steady-state mechanical squeezing beyond the resolved sideband limit by utilizing auxiliary cavity interference, overcoming current experimental constraints.

Contribution

It introduces a novel scheme using auxiliary cavity interference to generate mechanical squeezing in highly unresolved sideband regimes.

Findings

Achieves strong optomechanical coupling and suppresses cavity decay.

Demonstrates steady-state mechanical squeezing beyond the resolved sideband limit.

Validates the scheme through numerical simulation and theoretical analysis.

Abstract

We study the physical properties of double-cavity optomechanical system in which the mechanical resonator interacts with one of the coupled cavities and another cavity is used as an auxiliary cavity. The model can be expected to achieve the strong optomechanical coupling strength and overcome the optomechanical cavity decay, simultaneously. Through the coherent auxiliary cavity interferences, the steady-state squeezing of mechanical resonator can be generated in highly unresolved sideband regime. The validity of the scheme is assessed by numerical simulation and theoretical analysis of the steady-state variance of the mechanical displacement quadrature. The scheme provides a platform for the mechanical squeezing beyond the resolved sideband limit and addresses the restricted experimental bounds at present.