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Polariton resonances for ultra-strong coupling cavity optomechanics in GaAs/AlAs multiple quantum wells

Published 17 Sep 2015 in cond-mat.mes-hall | (1509.05152v1)

Abstract: Polariton-mediated light-sound interaction is investigated through resonant Brillouin experiments in GaAs/AlAs multiple-quantum wells. Photoelastic coupling enhancement at exciton-polariton resonance reaches 105 at 30 K as compared to a typical bulk solid room temperature transparency value. When applied to GaAs based cavity optomechanical nanodevices, this result opens the path to huge displacement sensitivities and to novel ultrastrong-coupling cavity phenomena with optomechanical couplings g0 in the range of 100 THz.

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