Optical control of spin textures in quasi-one-dimensional polariton   condensates
  We investigate, through polarization-resolved spectroscopy, the spin transport by propagating polariton condensates in a quasi one-dimensional microcavity ridge along macroscopic distances. Under circularly polarized, continuous-wave, non-resonant excitation, a sinusoidal precession of the spin in real space is observed, whose phase depends on the emission energy. The experiments are compared with simulations of the spinor-polariton condensate dynamics based on a generalized Gross-Pitaevskii equation, modified to account for incoherent pumping, decay and energy relaxation within the condensate. 
C. Ant\'on, S. Morina, T. Gao, P. S. Eldridge, T. C. H. Liew, M. D.   Mart\'in, Z. Hatzopoulos, P. G. Savvidis, I. A. Shelyk...
cond-mat.mes-hall