It is well known that radiation pressure forces of light can be used for the manipulation of mechanical motion in microscopic systems. Notable examples include laser cooling and laser tweezers.In this talk,I will discuss recent experimental advances on the use of radiation pressure force to control mechanical motion in macroscopic systems, with a focus on potential applications in quantum optics and quantum networks. Experimental studies on storing light as a mechanical excitation and on converting coherent optical fields between vastly different optical wavelengths via optomechanical processes will be highlighted. |