TL;DR
This paper reviews how radiation pressure in cavity optomechanics influences mechanical systems, highlighting phenomena like parametric instability and cooling, with implications for quantum control and sensing.
Contribution
It provides a unified overview of back-action effects in cavity optomechanics, emphasizing recent experimental advances and potential for quantum applications.
Findings
Demonstration of radiation pressure back-action effects
Analysis of parametric instability as a photonic clock
Cooling of mechanical modes below quantum occupancy
Abstract
The coupling of mechanical and optical degrees of freedom via radiation pressure has been a subject of early research in the context of gravitational wave detection. Recent experimental advances have allowed studying for the first time the modifications of mechanical dynamics provided by radiation pressure. This paper reviews the consequences of back-action of light confined in whispering-gallery dielectric micro-cavities, and presents a unified treatment of its two manifestations: notably the parametric instability (parametric amplification) and radiation pressure back-action cooling. Parametric instability offers a novel "photonic clock" which is driven purely by the pressure of light. In contrast, radiation pressure cooling can surpass existing cryogenic technologies and offers cooling to phonon occupancies below unity and provides a route towards cavity Quantum Optomechanics
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