Dynamical two-mode squeezing of thermal fluctuations in a cavity opto-mechanical system

TL;DR

This paper demonstrates experimental two-mode squeezing of thermal fluctuations in a cavity opto-mechanical system through parametric modulation, achieving enhanced squeezing beyond the stationary limit and paving the way for quantum entanglement applications.

Contribution

It introduces a novel method for dynamic two-mode squeezing in a thermal micro-oscillator using pulsed parametric excitation.

Findings

Achieved two-mode squeezing in a thermal micro-oscillator.

Surpassed the stationary 3dB squeezing limit with pulsed excitation.

Potential for generating entangled macroscopic quantum modes.

Abstract

We report the experimental observation of two-mode squeezing in the oscillation quadratures of a thermal micro-oscillator. This effect is obtained by parametric modulation of the optical spring in a cavity opto-mechanical system. In addition to stationary variance measurements, we describe the dynamic behavior in the regime of pulsed parametric excitation, showing enhanced squeezing effect surpassing the stationary 3dB limit. While the present experiment is in the classical regime, our technique can be exploited to produce entangled, macroscopic quantum opto-mechanical modes.