Pseudo-drag of a polariton superfluid
arXiv:1902.03605 · doi:10.1103/PhysRevB.100.085302
Abstract
The drag of half-light half-mater quasiparticles, exciton-polaritons, by an electric current is a peculiar mechanism of light-matter interaction in solids. While an ideal superfluid is protected from being dragged by its zero viscosity, here we argue that the state of the superfluid polariton condensate formed by a non-resonant optical pumping can be controlled by the electric current. The proposed mechanism is based on the stimulated relaxation of moving uncondensed excitons dragged by the electric current. The stimulated relaxation process favors the formation of a moving condensate in a quantum state that is characterised by the lowest condensation threshold. We also show that the electron-mediated inelastic scattering of the reservoir excitons to the condensate leads to the transfer of a non-zero mean momentum to the electron gas thus contributing to the electric current. We predict the generation of circular electric currents in a micropillar cavity in the presence of a nonresonant laser pumping at normal incidence.
arXiv comment7 pages, 4 figures
References in corpus (9)
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Quantised Vortices in an Exciton-Polariton Fluid
- Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons
- Single vortex-antivortex pair in an exciton polariton condensate
- Coulomb drag
- Energy Relaxation in a 1-D Polariton Condensate
- Radiative coupling and weak lasing of exciton-polariton condensates
- Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities
- Drag effects in the system of electrons and microcavity polaritons
Cited by in corpus (5)
- Quantum Vortex Formation in the "Rotating Bucket'' Experiment with Polariton Condensates
- Accelerating Polaritons with External Electric and Magnetic Fields
- Galilean boosts and superfluidity of resonantly driven polariton fluids in the presence of an incoherent reservoir
- Spin resonance induced by a mechanical rotation of a polariton condensate
- Pseudo-conservative dynamics of coupled polariton condensates