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arXiv · 1005.4625

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

M. H. Szymanska·F. M. Marchetti·D. Sanvitto
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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.

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M. H. Szymanska, F. M. Marchetti, D. Sanvitto. 2010-05-25. Propagating wave-packets and quantised currents in coherently driven polariton superfluids. https://doi.org/10.1103/physrevlett.105.236402

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