Backscattering suppression in supersonic 1D polariton condensates

Details Backscattering suppression in supersonic 1D polariton condensates Backscattering suppression in supersonic 1D polariton condensates

2011-09-26

arxiv.org/abs/1109.5583v1

Phys. Rev. Lett. 108, 036405 (2012)

Physics

Condensed Matter

Quantum Gases

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.108.036405

We investigate the effects of disorder on the propagation of one-dimensional polariton condensates in semiconductor microcavities. We observe a strong suppression of the backscattering produced by the imperfections of the structure when increasing the condensate density. This suppression occurs in the supersonic regime and is simultaneous to the onset of parametric instabilities which enable the "hopping" of the condensate through the disorder. Our results evidence a new mechanism for the frictionless flow of polaritons at high speeds.

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