Abstract

We study the properties of a binary microcavity polariton superfluid coherently injected by two lasers at different momenta and energies. The crossover from the supersonic to the subsonic regime, where motion is frictionless, is described by evaluating the linear response of the system to a weak defect potential. We show that the coupling between the two components requires that either both components flow without friction or both scatter against the defect, though scattering can be small when the two fluids are weakly coupled. By analyzing the drag force exerted on a defect, we give a recipe to experimentally address the crossover from the supersonic to the subsonic regime. © 2012 American Physical Society.

Autore Pugliese

• Sanvitto Daniele

Tutti gli autori

• Cancellieri E.; Marchetti F.M.; Szymanska M.H.; Sanvitto D.; Tejedor C.

Titolo volume/Rivista

Physical review letters

Anno di pubblicazione

2012

ISSN

0031-9007

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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