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Rotating patterns in polariton condensates in ring-shaped potentials under a bichromatic pump

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Abstract

We consider a polariton condensate in a microcavity driven by a bichromatic resonant pump formed by two vortical laser beams carrying different topological charges. The system is additionally confined in a ring-shaped potential. We show that in this system, steadily rotating nonlinear localized modes can be excited, whose angular rotation frequency is determined by optical frequencies and topological charges of the pump beams. When pump frequencies approach eigenfrequencies of the modes of the ring potential, resonant growth of peak amplitude of the excited states occurs. Repulsive polariton–polariton interactions lead to tilting of the resonance curves and appearance of bistability of rotating patterns.

© 2019 Optical Society of America

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Supplementary Material (4)

NameDescription
Visualization 1       Animation for Fig. 4(a) of the main text. Stable rotation of a bichromatically pumped polariton state with the pump components having topological charges m1=-2, m2=-1.
Visualization 2       Animation for Fig. 4(b). Evolution of an unstable bichromatically pumped polariton state with the pump components having topological charges m1=-2, m2=0.
Visualization 3       Animation for Fig. 4(c). Stable rotation of a bichromatically pumped polariton state with the pump components having topological charges m1=-2, m2=+1.
Visualization 4       Animation for Fig. 4(d). Decay of an unstable bichromatically pumped polariton state with the pump components having topological charges m1=-2, m2=+2.

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Equations (4)

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