Back action suppression for levitated dipolar scatterers

• URL: http://arxiv.org/abs/2402.04802v2
• Date: Wed, 14 Feb 2024 13:15:40 GMT
• Title: Back action suppression for levitated dipolar scatterers
• Authors: Yannick Weiser, Tommaso Faorlin, Lorenz Panzl, Thomas Lafenthaler, Lorenzo Dania, Dmitry S. Bykov, Thomas Monz, Rainer Blatt, Giovanni Cerchiari
• Abstract summary: We present a setup to enhance the information gleaned from optomechanical measurements by constraining the back action to a specific spatial direction. The setup consists of a hollow hemispherical mirror that controls the light scattered by the dipolar emitter, particularly at high scattering angles.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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, in particular limiting light collection efficiencies and, consequently, the information extractable from the system. In this article, we present a setup designed to enhance the information gleaned from optomechanical measurements by constraining the back action to a specific spatial direction. This approach facilitates achieving Heisenberg-limited detection at any given numerical aperture. The setup consists of a hollow hemispherical mirror that controls the light scattered by the dipolar emitter, particularly at high scattering angles, thereby focusing the obtained information. This mirror is compatible with existing setups commonly employed in levitated optomechanics, including confocal lenses and optical resonators.

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