Giant optical nonlinearity is observed under both continuous-wave and pulsed excitation in a deterministically-coupled quantum dot-micropillar system, in a pronounced strong-coupling regime. Using absolute reflectivity measurements we determine the critical intracavity photon number as well as the input and output coupling efficiencies of the device. Thanks to a near-unity input-coupling efficiency, we demonstrate a record nonlinearity threshold of only 8 incident photons per pulse. The output-coupling efficiency is found to strongly influence this nonlinearity threshold. We show how the fundamental limit of single-photon nonlinearity can be attained in realistic devices, which would provide an effective interaction between two coincident single photons.
@article{arxiv.1208.0850,
title = {Optical nonlinearity for few-photon pulses on a quantum dot-pillar cavity device},
author = {Vivien Loo and Christophe Arnold and Olivier Gazzano and Aristide Lemaitre and Isabelle Sagnes and Olivier Krebs and Paul Voisin and Pascale Senellart and Loïc Lanco},
journal= {arXiv preprint arXiv:1208.0850},
year = {2015}
}
Comments
5 pages, 4 figures. Supplemental Materials available in the directory anc/ included in the source of this manuscript