Spin-orbital effect on the polariton state in traps

I discuss similitude and differences of spin-orbital effects for electrons in quantum wells with the Rashba coupling polaritons semiconductor microcavities TE-TM splitting. Contrary to case electron, ground state polariton trap can be non-degenerate possess specific polarization structure. For azimuthally symmetric sufficiently strong coupling, is either radial or azimuthal vortex, depending on sign constant. The effect strongly enhanced trapped a ring, where even weak splitting results formation vorticity definite state. Hamiltonian quasi-1D motion ring derived it shown dispersion depend qualitatively curvature ring.