Quantum Optomechanical Heat Engine
Quantum Optomechanical Heat Engine
复制标题
量子光机热机
DOI：
10.1103/physrevlett.112.150602
复制
发表时间：
2014-04-16
影响因子：
8.6
通讯作者：
Meystre, Pierre
中科院分区：
文献类型：
--
作者：
Zhang, Keye;Bariani, Francesco;Meystre, Pierre
We investigate theoretically a quantum optomechanical realization of a heat engine. In a generic optomechanical arrangement the optomechanical coupling between the cavity field and the oscillating end mirror results in polariton normal mode excitations whose character depends on the pump detuning and the coupling strength. By varying that detuning it is possible to transform their character from phononlike to photonlike, so that they are predominantly coupled to the thermal reservoir of phonons or photons, respectively. We exploit the fact that the effective temperatures of these two reservoirs are different to produce an Otto cycle along one of the polariton branches. We discuss the basic properties of the system in two different regimes: in the optical domain it is possible to extract work from the thermal energy of a mechanical resonator at finite temperature, while in the microwave range one can in principle exploit the cycle to extract work from the blackbody radiation background coupled to an ultracold atomic ensemble.
