Propagating wave-packets and quantised currents in coherently driven polariton superfluids

Abstract

We study the properties of propagating polariton wave-packets and their connection to the stability of doubly charged vortices. Wave-packet propagation and related photoluminescence spectra exhibit a rich behaviour dependent on the excitation regime. We show that, because of the non-quadratic polariton dispersion, doubly charged vortices are stable only when initiated in wave-packets propagating at small velocities. Vortices propagating at larger velocities, or those imprinted directly into the polariton optical parametric oscillator (OPO) signal and idler are always unstable to splitting.

5 pages, 4 figures

References in corpus (11)

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• Quantum-fluid dynamics of microcavity polaritons
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Cited by in corpus (7)

• Quantum fluids of light
• Onset and dynamics of vortex-antivortex pairs in polariton OPO superfluids
• Information processing with topologically protected vortex memories in exciton-polariton condensates
• Phase ordering kinetics of a nonequilibrium exciton-polariton condensate
• Ballistic spin transport in exciton gases
• On multicomponent polariton superfluidity in the optical parametric oscillator regime
• Vortices in polariton OPO superfluids