Non-Abelian Gauge Fields in Photonic Cavities and Photonic Superfluids
arXiv:1303.4286 · doi:10.1103/PhysRevLett.112.066402
Abstract
We show that the interplay between the structure anisotropy and the energy splitting between the TE and TM modes of a microcavity leads to the appearance of a gauge field for a propagating polariton condensate. This field is analog with a spin-orbit coupling and the field texture can be tuned by rotating the sample and ranges continuously from a Rashba to a monopolar field. In the linear regime, the monopolar field leads to a remarkable focusing effect. In the interacting regime, the effective spin-orbit coupling induces a breakdown of superfluidity. The spatially homogeneous flows become unstable and dynamically evolve into textured ground states such as stripes and domain walls.
5 pages, 5 figures (Phys. Rev. Lett., in press)
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