Soliton Instabilities and Vortex Streets Formation in a Polariton Quantum Fluid

Details Soliton Instabilities and Vortex Streets Formation in a Polariton Quantum Fluid Soliton Instabilities and Vortex Streets Formation in a Polariton Quantum Fluid

2011-09-30

arxiv.org/abs/1109.6859v1

Phys. Rev. Lett. 107, 245301 (2011)

Physics

Condensed Matter

Quantum Gases

Scientific paper

10.1103/PhysRevLett.107.245301

Exciton-polaritons have been shown to be an optimal system in order to investigate the properties of bosonic quantum fluids. We report here on the observation of dark solitons in the wake of engineered circular obstacles and their decay into streets of quantized vortices. Our experiments provide a time-resolved access to the polariton phase and density, which allows for a quantitative study of instabilities of freely evolving polaritons. The decay of solitons is quantified and identified as an effect of disorder-induced transverse perturbations in the dissipative polariton gas.

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