Cavity Quantum Optomechanics

Abstract: The overarching research objective of cavity quantum optomechanics is to investi-gate quantum effects of micro- and nanoscale systems and their implications for the founda-tions and applications of quantum physics. Our ultimate goal is to gain access to a completely new parameter regime for experimental physics with respect to both size and complexity. Cavity optomechanics has recently emerged as one of the most dynamic fields in experimental phys-ics. In this presentation I will outline the fascinating perspectives of this area of research and present proof-of-concept experiments performed using high-reflectivity low-loss mechanical resonators cou-pled to high-finesse cryogenic optical cavities. Along the path towards the ultimate goal of macro-scopic quantum state preparation, our research has led to a number of interesting technological appli-cations including the development of a numerical solver for support-mediated losses in mechanical resonators [1] as well as new strategies for the development of low-noise multilayer mirrors for high performance optical reference cavities. The idea that the properties of a mechanical object can be modified by radiation pressure forces in an optical cavity goes back to the pioneering work of Braginsky [2]. In essence, the response of an opti-cal cavity to the motion of a mechanical object leads to forces that both depend on the position of the