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Frictionless flow in a binary polariton superfluid
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Cancellieri, E., Marchetti, F., Szymanska, M. H. (Marzena H.), Sanvitto, D. and Tejedor, C. (2012) Frictionless flow in a binary polariton superfluid. Physical Review Letters, Vol.108 (No.6). 065301. doi:10.1103/PhysRevLett.108.065301 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.108.065301
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.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 10 February 2012 | ||||
Dates: |
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Volume: | Vol.108 | ||||
Number: | No.6 | ||||
Page Range: | 065301 | ||||
DOI: | 10.1103/PhysRevLett.108.065301 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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