Microscopic theory of polariton-polariton interactions
Abstract
We develop a comprehensive theoretical model for the interaction strength between a pair of exciton-polaritons in microcavity devices. Ab initio numerical calculations for dipolar polaritons in one dimension are used as a starting point to build a Born-Oppenheimer theory that generally applies to generic -- dipolar or non-dipolar polaritons -- in both one and two dimensions. This theory anticipates that the strong coupling to the cavity mode leads to a drastic enhancement of the polariton interactions as compared to bare excitons, and predicts unexpected scaling laws in the interaction strength as a function of system parameters. Comparisons with available experimental data are drawn, and specific suggestions to validate it with new experiments are made. Promising strategies towards the observation of a strong polariton blockade regime are finally sketched.
Keywords
Cite
@article{arxiv.2212.02597,
title = {Microscopic theory of polariton-polariton interactions},
author = {Esben R. Christensen and Arturo Camacho-Guardian and Ovidiu Cotlet and Atac Imamoglu and Michiel Wouters and Georg M. Bruun and Iacopo Carusotto},
journal= {arXiv preprint arXiv:2212.02597},
year = {2024}
}
Comments
Main manuscript: 18 pages, 6 figures. Appendix: 2 pages, 2 figures