title: Creation of orbital angular momentum states with chiral polaritonic lenses.
abstract: Controlled transfer of orbital angular momentum to an exciton-polariton Bose-Einstein condensate spontaneously created under incoherent, off resonant excitation conditions is a long-standing challenge in the field of microcavity polaritonics. We demonstrate, experimentally and theoretically, a simple and efficient approach to the generation of nontrivial orbital angular momentum states by using optically induced potentials-chiral polaritonic lenses. These lenses are produced by a structured optical pump with a spatial distribution of intensity that breaks the chiral symmetry of the system.
authors.affiliation: Nonlinear Physics Centre, The Australian National University, Canberra ACT 0200, Australia and AMPL, Research School of Physics and Engineering, The Australian National University, Canberra ACT 0200, Australia.
authors.forename: Robert
authors.initials: R
authors.lastname: Dall
authors.affiliation: Quantum Functional System Research Group, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.
authors.forename: Michael D
authors.initials: MD
authors.lastname: Fraser
authors.affiliation: Nonlinear Physics Centre, The Australian National University, Canberra ACT 0200, Australia.
authors.forename: Anton S
authors.initials: AS
authors.lastname: Desyatnikov
authors.affiliation: Nonlinear Physics Centre, The Australian National University, Canberra ACT 0200, Australia.
authors.forename: Guangyao
authors.initials: G
authors.lastname: Li
authors.affiliation: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, D-97074 Würzburg, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Brodbeck
authors.affiliation: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, D-97074 Würzburg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Kamp
authors.affiliation: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, D-97074 Würzburg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Schneider
authors.affiliation: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, D-97074 Würzburg, Germany and School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, KY16 9SS, United Kingdom.
authors.forename: Sven
authors.initials: S
authors.lastname: Höfling
authors.affiliation: Nonlinear Physics Centre, The Australian National University, Canberra ACT 0200, Australia.
authors.forename: Elena A
authors.initials: EA
authors.lastname: Ostrovskaya