Abstract

We present the theoretical prediction of spontaneous rotating vortex rings in a parametrically driven quantum fluid of polaritons - coherent superpositions of coupled quantum well excitons and microcavity photons. These rings arise not only in the absence of any rotating drive, but also in the absence of a trapping potential, in a model known to map quantitatively to experiments. We begin by proposing a novel parametric pumping scheme for polaritons, with circular symmetry and radial currents, and characterize the resulting nonequilibrium condensate. We show that the system is unstable to spontaneous breaking of circular symmetry via a modulational instability, following which a vortex ring with large net angular momentum emerges, rotating in one of two topologically distinct states. Such rings are robust and carry distinctive experimental signatures, and so they could find applications in the new generation of polaritonic devices.

Autore Pugliese

• Sanvitto Daniele

Tutti gli autori

• Hamp J.O.; Balin A.K.; Marchetti F.M.; Sanvitto D.; Szymanska M.H.

Titolo volume/Rivista

Europhysics letters

Anno di pubblicazione

2015

ISSN

0295-5075

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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