We demonstrate a sideband-resolved cavity electromechanical system operating at room temperature. The mechanical resonator, a strongly pre-stressed silicon nitride string, is dielectrically coupled to a three-dimensional microwave cavity made of copper. The electromechanical coupling is characterized by two measurements, the cavity-induced eigenfrequency shift of the mechanical resonator and the optomechanically induced transparency. While the former is dominated by dielectric effects, the latter reveals a clear signature of the dynamical backaction of the cavity field on the resonator. This unlocks the field of cavity electromechanics for room temperature applications.
@article{arxiv.2103.06178,
title = {Room temperature cavity electromechanics in the sideband-resolved regime},
author = {Anh Tuan Le and Alexandre Brieusssel and Eva Maria Weig},
journal= {arXiv preprint arXiv:2103.06178},
year = {2021}
}