title: Polariton condensates put in motion.
abstract: We present several examples of the interesting phenomenology shown by a moving polariton condensate in semiconductor microcavities. The superfluid behavior is probed by colliding the polariton condensate against physical obstacles in the form of natural defects of the sample, demonstrating a clear suppression of scattering when the speed of the flow lies below the critical velocity. At higher velocities Cerenkov-like shock waves around the defect and disruption of the condensate are also observed.
authors.affiliation: Departamento de Física de Materiales, Universidad Autónoma de Madrid, Madrid, Spain. daniele.sanvitto@uam.es
authors.forename: D
authors.initials: D
authors.lastname: Sanvitto
authors.forename: A
authors.initials: A
authors.lastname: Amo
authors.forename: F P
authors.initials: FP
authors.lastname: Laussy
authors.forename: A
authors.initials: A
authors.lastname: Lemaître
authors.forename: J
authors.initials: J
authors.lastname: Bloch
authors.forename: C
authors.initials: C
authors.lastname: Tejedor
authors.forename: L
authors.initials: L
authors.lastname: Viña