Stochastic precession of the polarization in a polariton laser

Abstract

Microcavity polaritons in the lasing regime undergo a spontaneous symmetry breaking transition resulting in coherent emission with a well defined polarization. The order parameter is thus a vector describing both the laser global phase and polarization. Using an ultrafast single-shot detection technique we show that polariton lasing in GaAs-based microcavities presents a high degree of second order coherence ($g^{(2)}(\tau =0)\approx 1$) above threshold, and that the initial polarization is stochastic, taking any possible direction in the Poincaré sphere (linear, elliptical or circular). Once the polarization direction is established, subsequent oscillations of the emission probability witness the presence of an intrinsic polarization splitting. Our results show the negligible role of polariton interactions in the total emission statistics and in the establishment of the initial polarization.

arXiv comment9 pages, 6 figures

References in corpus (15)

• Quantum fluids of light
• Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
• Polariton laser using single micropillar GaAs-GaAlAs semiconductor cavities
• Spontaneous Polarisation Build up in a Room Temperature Polariton Laser
• Spatial and spectral shape of inhomogeneous non-equilibrium exciton-polariton condensates
• Spatial Coherence of a Polariton Condensate
• Polaritonic Feshbach Resonance
• Stochastic classical field model for polariton condensates
• Spontaneous spin bifurcations and ferromagnetic phase transitions in a spinor exciton-polariton condensate
• Stochastic polarization formation in exciton-polariton Bose-Einstein condensates
• Optical Anisotropy and Pinning of the Linear Polarization of Light in Semiconductor Microcavities
• Higher order coherence of exciton-polariton condensates
• A Coherent Polariton Laser
• Spontaneous symmetry breaking in a polariton and photon laser
• Temporally resolved second-order photon correlations of exciton-polariton Bose-Einstein condensate formation

Cited by in corpus (4)

• Spontaneous coherence in spatially extended photonic systems: Non-Equilibrium Bose-Einstein condensation
• Spin noise of a polariton laser
• Spin polarization of exciton-polariton condensate in a photonic synthetic effective magnetic field
• Jitter of condensation time and dynamics of spontaneous symmetry breaking in a gas of microcavity polaritons