title: Nonlinear optical spin Hall effect and long-range spin transport in polariton lasers.
abstract: We report on the experimental observation of the nonlinear analogue of the optical spin Hall effect under highly nonresonant circularly polarized excitation of an exciton-polariton condensate in a GaAs/AlGaAs microcavity. The circularly polarized polariton condensates propagate over macroscopic distances, while the collective condensate spins coherently precess around an effective magnetic field in the sample plane performing up to four complete revolutions.
authors.affiliation: School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom.
authors.forename: E
authors.initials: E
authors.lastname: Kammann
authors.forename: T C H
authors.initials: TC
authors.lastname: Liew
authors.forename: H
authors.initials: H
authors.lastname: Ohadi
authors.forename: P
authors.initials: P
authors.lastname: Cilibrizzi
authors.forename: P
authors.initials: P
authors.lastname: Tsotsis
authors.forename: Z
authors.initials: Z
authors.lastname: Hatzopoulos
authors.forename: P G
authors.initials: PG
authors.lastname: Savvidis
authors.forename: A V
authors.initials: AV
authors.lastname: Kavokin
authors.forename: P G
authors.initials: PG
authors.lastname: Lagoudakis