We propose a feasible scheme to cool down a mechanical resonator (MR) in a three-mirror cavity optomechanical system with controllable external optical drives. Under the Born-Oppenheimer approximation, the whole dynamics of the mechanical resonator and cavities is reduced to that of a time-dependent harmonic oscillator, whose effective frequency can be controlled through the optical drives. The cooling of the mechanical resonator can be realized by controlling the amplitude of the optical drives. Significantly, we show that the ground state cooling may be achieved in a short time via the three-mirror cavity optomechanical system with two optical modes.
详细资料
关键词: quant-ph
文献种类: Journal Article
备注:arXiv:1008.1630v2; Some references including our previous works on cooling of mechanical resonators are added, and some typos are corrected in this new version. Comments are welcome