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Temperature-dependent modeling of exciton-polariton bistability in semiconductor microcavities

R. Wushouer*, O. A. Egorov, R. Buschlinger, and U. Peschel

  • *Contact author: rouziwanguli.wushouer@uni-jena.de
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Phys. Rev. B 114, 105304 – Published 17 August, 2026

DOI: https://doi.org/10.1103/gpj9-g3rt

Abstract

We develop a model to investigate the collective dynamics and coherent interaction of exciton-polaritons and longitudinal acoustic phonons in semiconductor microcavities beyond Fermi's golden rule. Our model predicts temperature-induced dephasing and an energy redshift of exciton-polaritons together with the formation of a reservoir of incoherent excitons with very high in-plane momenta owing to scattering with acoustic phonons. We validate the proposed model by reproducing the temperature-dependent changes of the polariton bistability in coherently driven semiconductor microcavities. The bistability threshold and the extent of the bistable domain are considerably modified by the blueshift induced by the incoherent reservoir. Furthermore, we describe the effect of stimulated backscattering from the reservoir into the coherent polariton state, which occurs at higher reservoir densities.

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Phys. Rev. B 114, 105304– Published 17 August, 2026
  • Received 21 July 2023
  • Revised 6 July 2026
  • Accepted 20 July 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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