Quantum Theory of Spin Dynamics of Exciton-Polaritons in Microcavities

TLDR

The study presents a quantum theory of momentum and spin relaxation of exciton‑polaritons in microcavities. The theory models the relaxation dynamics of exciton‑polaritons in microcavities. The theory predicts that giant longitudinal‑transverse splitting mixes polariton spin states, producing beats in circularly polarized photoluminescence that are highly sensitive to bosonic stimulation of polariton scattering, as confirmed experimentally. Reference: Phys.

Abstract

We present the quantum theory of momentum and spin relaxation of exciton-polaritons in microcavities. We show that giant longitudinal-transverse splitting of the polaritons mixes their spin states, which results in beats between right- and left-circularly polarized photoluminescence of microcavities, as was recently experimentally observed [M. D. Martin et al., Phys. Rev. Lett. 89, 077402 (2002)]. This effect is strongly sensitive to the bosonic stimulation of polariton scattering.