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arXiv · 2212.08269

Giant optomechanical coupling and dephasing protection with cavity exciton-polaritons

P. Sesin·A. S. Kuznetsov·G. Rozas·S. Anguiano·A. E. Bruchhausen·A. Lemaître·K. Biermann·P. V. Santos·A. Fainstein
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Abstract

Electronic resonances can significantly enhance the photon-phonon coupling in cavity optomechanics, but are normally avoided due to absorption losses and dephasing by inhomogeneous broadening. We experimentally demonstrate that exciton-polaritons in semiconductor microcavities enable GHz optomechanics with single-particle resonant couplings reaching record values in the 10s of MHz range. Moreover, this resonant enhancement is protected from inhomogeneous broadening by the Rabi gap. Single-polariton non-linearities and the optomechanical strong-coupling regime become accessible in this platform.

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P. Sesin, A. S. Kuznetsov, G. Rozas, S. Anguiano, A. E. Bruchhausen, A. Lemaître, K. Biermann, P. V. Santos, A. Fainstein. 2022-12-16. Giant optomechanical coupling and dephasing protection with cavity exciton-polaritons. https://arxiv.org/abs/2212.08269

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