title: Propagation and amplification dynamics of 1D polariton condensates.
abstract: The dynamics of propagating polariton condensates in one-dimensional microcavities is investigated through time resolved experiments. We find a strong increase in the condensate intensity when it travels through the nonresonantly excited area. This amplification is shown to come from bosonic stimulated relaxation of reservoir excitons into the polariton condensate, allowing for the repopulation of the condensate through nonresonant pumping. Thus, we experimentally demonstrate a polariton amplifier with a large band width, opening the way towards the transport of polaritons with high densities over macroscopic distances.
authors.affiliation: CNRS-Laboratoire de Photonique et Nanostructures, Route de Nozay, 91460 Marcoussis, France.
authors.forename: E
authors.initials: E
authors.lastname: Wertz
authors.forename: A
authors.initials: A
authors.lastname: Amo
authors.forename: D D
authors.initials: DD
authors.lastname: Solnyshkov
authors.forename: L
authors.initials: L
authors.lastname: Ferrier
authors.forename: T C H
authors.initials: TC
authors.lastname: Liew
authors.forename: D
authors.initials: D
authors.lastname: Sanvitto
authors.forename: P
authors.initials: P
authors.lastname: Senellart
authors.forename: I
authors.initials: I
authors.lastname: Sagnes
authors.forename: A
authors.initials: A
authors.lastname: Lemaître
authors.forename: A V
authors.initials: AV
authors.lastname: Kavokin
authors.forename: G
authors.initials: G
authors.lastname: Malpuech
authors.forename: J
authors.initials: J
authors.lastname: Bloch
mesh_terms: D008962:Models, Theoretical; D055095:Optics and Photonics / Q000379:methods*; D012666:Semiconductors