Resolving exciton and polariton multi-particle correlations in an optical microcavity in the strong coupling regime
arXiv:2404.14744 · doi:10.1103/t2b9-3vby
Abstract
Multi-particle correlations of exciton-polaritons and reservoir-excitons in the strong light-matter coupling regime dictate the quantum dynamics of optical microcavities. In this letter, we examine the many-body exciton-polariton dynamics in a Fabry-Pérot microcavity of a two-dimensional metal-halide semiconductor over timescales involving polariton (\,ps) and exciton (\,ps) scattering. We find enhanced exciton nonlinear dynamics in the microcavity versus the bare semiconductor, concomitant with ultrafast polariton scattering dynamics. We measure, by means of coherent spectroscopy, the coupling between exciton-polaritons, bright excitons, and reservoir-excitons that highlight the complex scattering landscape that fundamentally drives polariton condensation.
Main manuscript plus supplementary material document. Accepted for publication in Physical Review B
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