Levitated electromechanics: all-electrical cooling of charged nano- and micro-particles

TL;DR

This paper demonstrates a method for cooling charged levitated nano- and micro-particles using an all-electrical approach with an RLC circuit, enabling quantum regime exploration in cryogenic environments.

Contribution

It introduces a novel all-electrical cooling technique for levitated particles applicable across various sizes and materials, advancing the field of quantum electromechanics.

Findings

Quantum regime achievable in cryogenic conditions

Effective cooling with passive resistive and active feedback schemes

Applicable to a wide range of particle sizes and materials

Abstract

We show how charged levitated nano- and micro-particles can be cooled by interfacing them with an $RLC$ circuit. All-electrical levitation and cooling is applicable to a wide range of particle sizes and materials, and will enable state-of-the-art force sensing within an electrically networked system. Exploring the cooling limits in the presence of realistic noise we find that the quantum regime of particle motion can be reached in cryogenic environments both for passive resistive cooling and for an active feedback scheme, paving the way to levitated quantum electromechanics.