Intrinsic Kerr amplification for microwave electromechanics
arXiv:2402.00802 · doi:10.1063/5.0201936
Abstract
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.
6 pages, 4 figures, supplementary attached