Polariton resonances for ultra-strong coupling cavity optomechanics in GaAs/AlAs multiple quantum wells
arXiv:1509.05152 · doi:10.1103/PhysRevLett.115.267402
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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