Cooling and control of a cavity opto-electromechanical system

TL;DR

This paper demonstrates a cavity opto-electromechanical system that combines electrical actuation with ultrasensitive mechanical transduction, achieving significant force application and cooling capabilities for advanced mechanical control.

Contribution

It introduces a novel integrated system with high electrical gradient forces and ultra-sensitive transduction, enabling effective feedback cooling and precise temperature calibration.

Findings

Electrical gradient forces up to 0.40 microN achieved

Mechanical transduction sensitivity of 1.5 x 10^-18 m/rtHz

Successful demonstration of opto-electromechanical feedback cooling

Abstract

We implement a cavity opto-electromechanical system integrating electrical actuation capabilities of nanoelectromechanical devices with ultrasensitive mechanical transduction achieved via intra-cavity optomechanical coupling. Electrical gradient forces as large as 0.40 microN are realized, with simultaneous mechanical transduction sensitivity of 1.5 X 10^-18 m/rtHz representing a three orders of magnitude improvement over any nanoelectromechanical system to date. Opto-electromechanical feedback cooling is demonstrated, exhibiting strong squashing of the in-loop transduction signal. Out-of-loop transduction provides accurate temperature calibration even in the critical paradigm where measurement backaction induces opto-mechanical correlations.