New perspectives on superfluidity in resonantly--driven polariton fluids
arXiv:1905.05855 · doi:10.1103/PhysRevB.101.064505
Abstract
In this paper we discuss, within the Gross--Pitaevskii framework, superfluidity, soliton nucleation, and instabilities in a non-equilibrium polariton fluid injected by a spatially localized and continuous-wave coherent pump and flowing against a defect located outside the pump spot. In contrast to equilibrium condensates, the steady-state solutions of the driven-dissipative equations in this specific geometry hardly show a clean superfluid flow around the defect and rather feature a crossover from shallow to deep soliton-like perturbation. This is explained in terms of the properties of one-dimensional flows, in particular their weak dependence on the pump parameters and their rapid transition to a super-sonic regime under the effect of the quantum pressure; such a highly nonlinear behaviour calls for quantitative experimental tests of the underlying Gross--Pitaevskii equation. The role of disorder and of a incoherent reservoir in inducing non-stationary behaviours with moving vortices is also highlighted.
References in corpus (17)
- Quantum fluids of light
- Observation of Superfluidity of Polaritons in Semiconductor Microcavities
- Spontaneous formation and optical manipulation of extended polariton condensates
- Polariton superfluids reveal quantum hydrodynamic solitons
- Observation of vortex dipoles in an oblate Bose-Einstein condensate
- Stochastic properties of systems controlled by autocatalytic reactions II
- All-optical control of the quantum flow of a polariton superfluid
- An acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons
- Topological order and equilibrium in a condensate of exciton-polaritons
- Hydrodynamic nucleation of vortices and solitons in a resonantly excited polariton superfluid
- Polarization bistability and resultant spin rings in semiconductor microcavities
- Analog Hawking radiation from an acoustic black hole in a flowing polariton superfluid
- Dark Solitons in Waveguide Polariton Fluids Shed Light on Interaction Constants
- Vortex shedding and drag in dilute Bose-Einstein condensates
- Dispersion relation of the collective excitations in a resonantly driven polariton fluid
- Stochastic Gross-Pitaevskii Equation for the Dynamical Thermalization of Bose-Einstein Condensates
- Sustained propagation and control of topological excitations in polariton superfluid
Cited by in corpus (12)
- Polariton fluids for analogue gravity physics
- Quantum vacuum excitation of a quasi-normal mode in an analog model of black hole spacetime
- Spectrum of collective excitations of a quantum fluid of polaritons
- Galilean boosts and superfluidity of resonantly driven polariton fluids in the presence of an incoherent reservoir
- Critical velocity in resonantly driven polariton superfluids
- Analogue quantum simulation of the Hawking effect in a polariton superfluid
- Interaction between an impurity and nonlinear excitations in a polariton condensate
- Metamorphoses of the flow past an obstacle of a resonantly-driven bistable polariton fluid
- Drag force of a exciton-polariton condensate under non-resonant pumping
- Dark and thermal reservoir contributions to polariton sound velocity
- Quantum hydrodynamics of a polariton fluid: pure energy relaxation terms
- Bidimensional measurements of photon statistics within a multimodal temporal framework