Competition between heating and cooling effects in an optomechanical oscillator using a squeezed field

TL;DR

This paper investigates how squeezed light influences the heating and cooling of an optomechanical oscillator, revealing that squeezing parameters critically affect the oscillator's effective temperature and enabling significant cooling improvements.

Contribution

The study explicitly examines the impact of squeezing parameters on cooling efficiency, demonstrating optimal conditions for minimizing the oscillator's temperature using squeezed light.

Findings

Cooling can be enhanced significantly with squeezed light.

Optimal phase for minimum temperature is around 0.8π.

Effective temperature reduction is three orders of magnitude compared to no squeezing.

Abstract

Squeezed light is a useful phenomenon that can be exploited to improve the sensitivity of specific classes of detectors based on optomechanical effects. Recently, there has been significant interest in the potential application of a squeezed field in the cooling of an optomechanical oscillator. It has been shown that this field could cool an oscillator below the standard limit of a coherent field. In this study, the effect of squeezed light was evaluated by explicitly examining the role of the squeezing parameters on the final effective temperature of the oscillator. The results show that the observed cooling and heating effects are strongly dependent on the squeezing parameters and the phase. Using an oscillator of 2$\pi\times$10.1 MHz driven by a 1064-nm laser, the lowest effective temperature and quantum number are three orders of magnitude smaller compared to the case of no squeezing; especially, these minimum values are obtained at the squeezing phase of about 0.8$\pi$. This study highlighted important insights for the optimization of cooling efficiency using squeezed light.