Frictionless flow in a binary polariton superfluid
arXiv:1107.4522 · doi:10.1103/PhysRevLett.108.065301
Abstract
We study the properties of a binary microcavity polariton superfluid coherently injected by two lasers. The crossover from the supersonic to subsonic regime, where motion is frictionless, is described by evaluating the Bogoliubov spectra. We show that according to the Landau criteria, the coupling between the two components precludes the existence of superfluidity just for one component but not for the other. By analysing the drag force exerted on a defect, we give a recipe to experimentally address the crossover from the supersonic to the subsonic regime.
4+ pages, 4 figures, 4 pages of supplementary material
References in corpus (8)
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Quantum-fluid dynamics of microcavity polaritons
- Light Engineering of the Polariton Landscape in Semiconductor Microcavities
- Spontaneous and triggered vortices in polariton OPO superfluids
- Multistability of a two component exciton-polariton fluid
- Superflow of resonantly driven polaritons against a defect
- Two-dimensional periodic waves in a supersonic flow of a Bose-Einstein condensate
- Critical velocities in two-component superfluid Bose gases
Cited by in corpus (5)
- All-optical polariton transistor
- Control and ultrafast dynamics of a two-fluid polariton switch
- Interaction-Shaped Vortex-Antivortex Lattices in Polariton Fluids
- Spontaneous and Superfluid Chiral Edge States in Exciton-Polariton Condensates
- Parametric scattering of microcavity polaritons into ghost branches