Everyday electromechanics: Capacitive strong coupling to mechanical motion

Denise Puglia, Rachel Odessey, Peter S. Burn, Niklas Luhmann, Silvan Schmid, Andrew P. Higginbotham

Published 2024-07-22Version 1

We demonstrate a room temperature, all-electric device that reaches a strong coupling regime where external environmental coupling dominates over internal mechanical dissipation. The device has four orders of magnitude lower insertion loss than a comparable commercial quartz crystal, and achieves a position imprecision rivaling an optical interferometer. With the help of a back-action isolation scheme, we observe radiative cooling of mechanical motion by a remote cryogenic load.