Developing future quantum communication may rely on the ability to engineer cavity-mediated interactions between photons and solid-state artificial atoms, in a deterministic way. Here, we report a set of technological and experimental developments for the deterministic coupling between the optical mode of a micropillar cavity and a quantum dot trion transition. We first identify a charged transition through in-plane magnetic field spectroscopy, and then tune the optical cavity mode to its energy via in-situ lithography. In addition, we design an asymmetric tunneling barrier to allow the optical trapping of the charge, assisted by a quasi-resonant pumping scheme, in order to control its occupation probability. We evaluate the generation of a positively-charged quantum dot through second order auto-correlation measurements of its resonance fluorescence, and the quality of light-matter interaction for these spin-photon interfaces is assessed by measuring the performance of the device as a single-photon source.
@article{arxiv.1909.02440,
title = {Deterministic assembly of a charged quantum dot-micropillar cavity device},
author = {P. Hilaire and C. Millet and J. C. Loredo and C. Antón and A. Harouri and A. Lemaître and I. Sagnes and N. Somaschi O. Krebs and P. Senellart and L. Lanco},
journal= {arXiv preprint arXiv:1909.02440},
year = {2020}
}