Squeezed states of quadratically kicked nanomechanical oscillators

TL;DR

This paper presents a method to generate and measure squeezed states in nanomechanical oscillators using quadratic optomechanical coupling, avoiding complex optical state preparations and enabling efficient squeezing at various temperatures.

Contribution

It introduces a scheme for preparing and measuring squeezed states of nanomechanical oscillators via quadratic coupling without needing nonclassical optical fields or post-measurements.

Findings

Squeezing of quadrature variance is achievable with few interactions.

The method works across different initial temperatures.

No need for nonclassical optical fields or post-processing.

Abstract

We show how to prepare and directly measure the squeezed states of nanomechanical oscillators. An intense pulse interacts with a dielectric mirror in a cavity. The quadratic coupling between the optical pulse and the oscillator results in the reduction of a quadrature variance of the massive oscillator. Differently from others, the proposed scheme here requires neither any post-action on the optical field nor a preparation of a nonclassical optical field. Depending on the initial temperature of the system, the squeezing of the variance under the vacuum limit can be achieved only by a few repetitive interactions.