Spontaneous and triggered vortices in polariton OPO superfluids

Abstract

We study non-equilibrium polariton superfluids in the optical parametric oscillator (OPO) regime using a two-component Gross-Pitaevskii equation with pumping and decay. We identify a regime above OPO threshold, where the system undergoes spontaneous symmetry breaking and is unstable towards vortex formation without any driving rotation. Stable vortex solutions differ from metastable ones; the latter can persist in OPO superfluids but can only be triggered externally. Both spontaneous and triggered vortices are characterised by a generalised healing length, specified by the OPO parameters only.

5 pages, 4 figures

References in corpus (4)

• Observation of Superfluidity of Polaritons in Semiconductor Microcavities
• Quantised Vortices in an Exciton-Polariton Fluid
• Quantum-fluid dynamics of microcavity polaritons
• Spontaneous rotating vortex lattices in a pumped decaying condensate

Cited by in corpus (9)

• Quantum fluids of light
• Hydrodynamic nucleation of vortices and solitons in a resonantly excited polariton superfluid
• Spontaneous coherence in spatially extended photonic systems: Non-Equilibrium Bose-Einstein condensation
• Superflow of resonantly driven polaritons against a defect
• Phase ordering kinetics of a nonequilibrium exciton-polariton condensate
• Robustness and observability of rotating vortex-lattices in an exciton-polariton condensate
• Propagating wave-packets and quantised currents in coherently driven polariton superfluids
• Vortex pair annihilation in arrays of photon cavities
• Phase domain walls in coherently driven Bose-Einstein condensates