Feedback-assisted ponderomotive squeezing

TL;DR

This paper investigates how homodyne-based feedback control can enhance ponderomotive squeezing in optomechanical systems, demonstrating potential improvements for generating detectable squeezed light with current technology.

Contribution

It introduces a feedback scheme to improve ponderomotive squeezing in optomechanical cavities, showing how resonance driving combined with proportional feedback enhances squeezing performance.

Findings

Feedback control improves squeezing performance.

Resonant driving enhances the effect.

Enhanced squeezing should be detectable with current setups.

Abstract

We analyze how the radiation pressure interaction between a mechanical element and an intensely driven optical cavity mode can be exploited for generating squeezed light. We study in particular how the performance of the optomechanical device can be improved when a homodyne-based feedback loop is added to control the motion of the mechanical element of the system. We show that, when driving the cavity at resonance, an appropriate proportional feedback control is able to improve the generation of ponderomotive squeezing, which should be detectable with state-of-the-art apparatuses.