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Refroidissement par laser d'un oscillateur nanomécanique dans son état quantique initial.

Laser cooling of a nanomechanical oscillator into its quantum ground state.

Auteurs : CHAN J., ALEGRE T. P. M., SAFAVI-NAEINI A. H., et al.

Type d'article : Article

Résumé

The authors report the development of a coupled, nanoscale optical and mechanical resonator formed in a silicon microchip, in which radiation pressure from a laser is used to cool the mechanical motion down to its quantum ground state (reaching an average phonon occupancy number of 0.85 plus or minus 0.08). This cooling is realized at an environmental temperature of 20 K, roughly one thousand times larger than in previous experiments and paves the way for optical control of mesoscale mechanical oscillators in the quantum regime.

Détails

  • Titre original : Laser cooling of a nanomechanical oscillator into its quantum ground state.
  • Identifiant de la fiche : 30003519
  • Langues : Anglais
  • Source : Nature - vol. 478 - n. 7367
  • Date d'édition : 06/10/2011
  • DOI : http://dx.doi.org/10.1038/nature10461

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