Spectrum and entanglement of phonons in quantum fluids of light - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2013

Spectrum and entanglement of phonons in quantum fluids of light

Résumé

We study the quantum state of phonons propagating on top of a fluid of light coherently generated in a planar microcavity device by a quasi-resonant incident laser beam. In the steady-state under a monochromatic pump, because of the finite radiative lifetime of photons, a sizable incoherent population of low frequency phonons is predicted to appear. Their mean occupation number differs from a Planck distribution and is independent on the photon lifetime. When the photon fluid is subjected to a sudden change of its parameters, additional phonon pairs are created in the fluid with remarkable two-mode squeezing and entanglement properties. Schemes to assess non-separability of the phonon state from measurements of the correlation functions of the emitted light are discussed.

Dates et versions

hal-00913374 , version 1 (03-12-2013)

Identifiants

Citer

Xavier Busch, Iacopo Carusotto, Renaud Parentani. Spectrum and entanglement of phonons in quantum fluids of light. 2013. ⟨hal-00913374⟩
72 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More