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Q: Fachverband Quantenoptik und Photonik

Q 56: Optomechanics II

Q 56.1: Vortrag

Donnerstag, 3. März 2016, 14:30–14:45, f342

Photon-Phonon Interactions in Nano-Photonic Waveguides — •Hashem Zoubi and Klemens Hammerer — Institute for Theoretical Physics, Leibniz University Hanover

Stimulated Brillouin Scattering (SBS), i.e. the scattering of photons from acoustic phonons in dielectric materials, is induced mainly by electrostriction phenomena in bulk media. It was shown recently that SBS can be enhanced by orders of magnitudes when approaching the nanoscale regime due to radiation pressure. We develop a microscopic quantum theory that includes electrostriction and radiation pressure on the same footing. We derive the photon-phonon coupling parameter, which combines SBS and quantum optomechanical processes. We present the results by giving detailed calculations for the case of a nanoscale waveguide of circular cross section. We extract an effective photon-photon interaction which is a step toward many-body physics of photons.