Hybrid optomechanical cooling by atomic Λ systems

F. Bariani, S. Singh, L. F. Buchmann, M. Vengalattore, P. Meystre

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


We investigate a hybrid quantum system consisting of a cavity optomechanical device optically coupled to an ultracold quantum gas. We show that the dispersive properties of the ultracold gas can be used to dramatically modify the optomechanical response of the mechanical resonator. We examine hybrid schemes wherein the mechanical resonator is coupled either to the motional or the spin degrees of freedom of the ultracold gas. In either case, we find an enhancement of more than two orders of magnitude in optomechanical cooling due to this hybrid interaction. Significantly, based on demonstrated parameters for the cavity optomechanical device, we identify regimes that enable the ground-state cooling of the resonator from room temperature. In addition, the hybrid system considered here represents a powerful interface for the use of an ultracold quantum gas for state preparation, sensing, and quantum manipulation of a mesoscopic mechanical resonator.

Original languageEnglish (US)
Article number033838
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
StatePublished - Sep 22 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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