title: Backscattering suppression in supersonic 1D polariton condensates.
abstract: We investigate the effect of disorder on the propagation of one-dimensional polariton condensates in semiconductor microcavities. We observe a strong suppression of the backscattering produced by the imperfections of the structure when increasing the condensate density. This suppression occurs in the supersonic regime and is simultaneous to the onset of parametric instabilities which enable the "hopping" of the condensate through the disorder. Our results evidence a new mechanism for the strong scattering reduction of polaritons at high speeds.
authors.affiliation: Laboratoire de Photonique et Nanostructures, LPN/CNRS, Route de Nozay, 91460 Marcoussis, France.
authors.forename: D
authors.initials: D
authors.lastname: Tanese
authors.forename: D D
authors.initials: DD
authors.lastname: Solnyshkov
authors.forename: A
authors.initials: A
authors.lastname: Amo
authors.forename: L
authors.initials: L
authors.lastname: Ferrier
authors.forename: E
authors.initials: E
authors.lastname: Bernet-Rollande
authors.forename: E
authors.initials: E
authors.lastname: Wertz
authors.forename: I
authors.initials: I
authors.lastname: Sagnes
authors.forename: A
authors.initials: A
authors.lastname: Lemaître
authors.forename: P
authors.initials: P
authors.lastname: Senellart
authors.forename: G
authors.initials: G
authors.lastname: Malpuech
authors.forename: J
authors.initials: J
authors.lastname: Bloch