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arXiv · 2404.14744

Resolving exciton and polariton multi-particle correlations in an optical microcavity in the strong coupling regime

Victoria Quirós-Cordero·Esteban Rojas-Gatjens·Martín Gómez-Dominguez·Hao Li·Carlo A. R. Perini·Natalie Stingelin·Juan-Pablo Correa-Baena·Eric R. Bittner·Ajay Ram Srimath Kandada·Carlos Silva-Acuña
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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-P\'erot microcavity of a two-dimensional metal-halide semiconductor over timescales involving polariton ($\ll 1$\,ps) and exciton ($\gg 1$\,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.

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Victoria Quirós-Cordero, Esteban Rojas-Gatjens, Martín Gómez-Dominguez, Hao Li, Carlo A. R. Perini, Natalie Stingelin, Juan-Pablo Correa-Baena, Eric R. Bittner, Ajay Ram Srimath Kandada, Carlos Silva-Acuña. 2024-04-23. Resolving exciton and polariton multi-particle correlations in an optical microcavity in the strong coupling regime. https://doi.org/10.1103/t2b9-3vby

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