A promising route towards the heralded creation and annihilation of single-phonons is to couple a single-photon emitter to a mechanical resonator. The challenge lies in reaching the resolved-sideband regime with a large coupling rate and a high mechanical quality factor. We achieve all of this by coupling self-assembled InAs quantum dots to a small-mode-volume phononic-crystal resonator with mechanical frequency Ωm/2π=1.466GHz and quality factor Qm=2.1×103. Thanks to the high coupling rate of gep/2π=2.9MHz, and by exploiting a matching condition between the effective Rabi and mechanical frequencies, we are able to observe the interaction between the two systems. Our results represent a major step towards quantum control of the mechanical resonator via a single-photon emitter.
@article{arxiv.2311.05342,
title = {A single-photon emitter coupled to a phononic-crystal resonator in the resolved-sideband regime},
author = {Clemens Spinnler and Giang N. Nguyen and Ying Wang and Liang Zhai and Alisa Javadi and Marcel Erbe and Sven Scholz and Andreas D. Wieck and Arne Ludwig and Peter Lodahl and Leonardo Midolo and Richard J. Warburton},
journal= {arXiv preprint arXiv:2311.05342},
year = {2023}
}