Electromechanical transduction gain of 21 dB is realized in a micro-cantilever resonant force sensor operated in the unresolved-sideband regime. Strain-dependent kinetic inductance weakly couples cantilever motion to a superconducting nonlinear resonant circuit. A single pump generates motional sidebands and parametrically amplifies them via four-wave mixing. We study the gain and added noise, and we analyze potential benefits of this integrated amplification process in the context force sensitivity.
@article{arxiv.2402.00802,
title = {Intrinsic Kerr amplification for microwave electromechanics},
author = {Ermes Scarano and Elisabet K. Arvidsson and August K. Roos and Erik Holmgren and David B. Haviland},
journal= {arXiv preprint arXiv:2402.00802},
year = {2024}
}