Intersubband polariton-polariton scattering in a dispersive microcavity
Optics
2022-06-29 v2 Mesoscale and Nanoscale Physics
Abstract
The ultrafast scattering dynamics of intersubband polaritons in dispersive cavities embedding GaAs/AlGaAs quantum wells are studied directly within their band structure using a non-collinear pump-probe geometry with phase-stable mid-infrared pulses. Selective excitation of the lower polariton at a frequency of ~25 THz and at a finite in-plane momentum, , leads to the emergence of a narrowband maximum in the probe reflectivity at . A quantum mechanical model identifies the underlying microscopic process as stimulated coherent polariton-polariton scattering. These results mark an important milestone towards quantum control and bosonic lasing in custom-tailored polaritonic systems in the mid and far-infrared.
Keywords
Cite
@article{arxiv.2201.05056,
title = {Intersubband polariton-polariton scattering in a dispersive microcavity},
author = {M. Knorr and J. M. Manceau and J. Mornhinweg and J. Nespolo and G. Biasiol and N. L. Tran and M. Malerba and P. Goulain and X. Lafosse and M. Jeannin and M. Stefinger and I. Carusotto and C. Lange and R. Colombelli and R. Huber},
journal= {arXiv preprint arXiv:2201.05056},
year = {2022}
}