Polariton path to fully resonant dispersive coupling in optomechanical resonators

G. Rozas , A. E. Bruchhausen , A. Fainstein , Bernard Jusserand (1) , A. Lemaitre (2)

1 INSP - Institut des Nanosciences de Paris
2 LPN - Laboratoire de photonique et de nanostructures

Resonant photoelastic coupling opens new perspectives for strongly enhanced light-sound interaction in semiconductor optomechanical resonators. One potential problem, however, is the reduction of the cavity Q factor induced by dissipation when the resonance is approached. We show in this Rapid Communication through Raman-scattering experiments that cavity-polariton mediation in the light-matter process overcomes this limitation allowing for a strongly enhanced photon-phonon coupling without significant lifetime reduction in the strong-coupling regime. Huge optomechanical coupling factors in the petaHz/nm range are envisaged, three orders of magnitude larger than the backaction produced by the mechanical displacement of the cavity mirrors.

Domaines: Matière Condensée [cond-mat]

G. Rozas, A. E. Bruchhausen, A. Fainstein, Bernard Jusserand, A. Lemaitre. Polariton path to fully resonant dispersive coupling in optomechanical resonators. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90 (20), ⟨10.1103/PhysRevB.90.201302⟩. ⟨hal-01229146⟩