We demonstrate scattering of laser light from two InAs quantum dots coupled to a photonic crystal waveguide, which is achieved by strain-tuning the optical transitions of the dots into mutual resonance. By performing measurements of the intensity and photon statistics of transmitted laser light before and after tuning the dots into resonance, we show that the nonlinearity is enhanced by collective scattering. In addition to providing a means of manipulating few-photon optical nonlinearities, our approach establishes new opportunities for multi-emitter quantum optics in a solid-state platform.
@article{arxiv.2205.04904,
title = {Collective scattering from quantum dots in a photonic crystal waveguide},
author = {Joel Q. Grim and Ian Welland and Samuel G. Carter and Allan S. Bracker and Andrew Yeats and Chul Soo Kim and Mijin Kim and Kha Tran and Igor Vurgaftman and Thomas L. Reinecke},
journal= {arXiv preprint arXiv:2205.04904},
year = {2022}
}