Signature of the microcavity exciton-polariton relaxation mechanism in the polarization of emitted light
arXiv:0807.4964 · doi:10.1103/PhysRevB.79.195310
Abstract
We have performed real and momentum space spin-dependent spectroscopy of spontaneously formed exciton polariton condensates for a non-resonant pumping scheme. Under linearly polarized pump, our results can be understood in terms of spin-dependent Boltzmann equations in a two-state model. This suggests that relaxation into the ground state occurs after multiple phonon scattering events and only one polariton-polariton scattering. For the circular pumping case, in which only excitons of one spin are injected, a bottleneck effect is observed, implying inefficient relaxation.
arXiv comment7 pages, 7 figures
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- Anisotropic Optical Spin Hall Effect in Semiconductor Microcavities
- Effect of polariton-polariton interactions on the excitation spectrum of a non-equilibrium condensate in a periodic potential
- Autonomous chaos of exciton-polariton condensates
- Single-Shot Quantum Non-Demolition Measurement of a Quantum Dot Electron Spin, using Cavity Exciton-Polaritons
- Quantum theory of polariton weak lasing and polarization bifurcations