A short walk through quantum optomechanics

TLDR

The paper reviews the basic physics of quantum optomechanics, surveys recent developments, and outlines future directions for functionalizing these systems in metrology. It describes cavity‑optomechanical cooling theory, summarizes experimental progress, explores quantum state preparation, control, mechanical squeezing, pulsed protocols, and discusses a bottom‑up approach using ultracold atoms. The authors conclude that functionalizing quantum optomechanical systems holds promise for advancing precision metrology.

Abstract

This paper gives an brief review of the basic physics of quantum optomechanics and provides an overview of some of its recent developments and current areas of focus. It first outlines the basic theory of cavity optomechanical cooling and gives a brief status report of the experimental state-of-the-art. It then turns to the deep quantum regime of operation of optomechanical oscillators and cover selected aspects of quantum state preparation, control and characterization, including mechanical squeezing and pulsed optomechanics. This is followed by a discussion of the "bottom-up" approach that exploits ultracold atomic samples instead of nanoscale systems. It concludes with an outlook that concentrates largely on the functionalization of quantum optomechanical systems and their promise in metrology applications.