Quantum optomechanical heat engine

Keye Zhang, Francesco Bariani, Pierre Meystre

Research output: Contribution to journalArticlepeer-review

167 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number150602
JournalPhysical review letters
Volume112
Issue number15
DOIs
StatePublished - Apr 16 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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