Back action suppression for levitated dipolar scatterers

• DOI: 10.48550/arxiv.2402.04802
• Publication Date: 2024-02-07
• Authors: Yannick Weiser; Tommaso Faorlin; Lorenz Panzl; Thomas Lafenthaler; Lorenzo Dania; Dmitry S. Bykov; Thomas Monz; R. Blatt; G. Cerchiari

Levitated dipolar scatterers exhibit exceptional performance as optomechanical systems for observing quantum mechanics at the mesoscopic scale. However, their tendency to scatter light in almost any direction poses experimental challenges, particular limiting collection efficiencies and, consequently, information extractable from system. In this article, we present a setup designed enhance gleaned measurements by constraining back action specific spatial direction. This approach facilitates achieving Heisenberg-limited detection given numerical aperture. The consists of hollow hemispherical mirror that controls scattered emitter, particularly high scattering angles, thereby focusing obtained information. is compatible with existing setups commonly employed levitated optomechanics, including confocal lenses and optical resonators.