%0 Journal Article %T Polariton-acoustic-phonon interaction in a semiconductor microcavity %+ Laboratoire Pierre Aigrain (LPA) %A Cassabois, Guillaume %A Triques, Alc %A Bogani, F. %A Delalande, C. %A Roussignol, P. %A Piermarocchi, C. %< avec comité de lecture %Z GES:00-005 %@ 1098-0121 %J Physical Review B: Condensed Matter and Materials Physics (1998-2015) %I American Physical Society %V 61 %P 1696-1699 %8 2000 %D 2000 %R 10.1103/PhysRevB.61.1696 %K CAVITY %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles %X The broadening of polariton lines by acoustic phonons is investigated in a semiconductor microcavity by means of interferometric correlation measurements with subpicosecond resolution. A decrease of the polariton-acoustic phonon coupling is clearly observed for the lower polariton branch as one approaches the resonance between exciton and photon states. This behavior cannot be explained in terms of a semiclassical linear dispersion theory but requires a full quantum description of the microcavity in the strong-coupling regime. %G English %L hal-00546760 %U https://hal.science/hal-00546760 %~ UNIV-PARIS7 %~ ENS-PARIS %~ UPMC %~ LPA %~ CNRS %~ PSL %~ UPMC_POLE_2 %~ SORBONNE-UNIVERSITE %~ SU-SCIENCES %~ UNIV-PARIS %~ ENS-PSL %~ ALLIANCE-SU