Optimal orientation detection of an anisotropic dipolar scatterer
Optics
2022-05-18 v2
Abstract
The angular orientation of an anisotropic scatterer with cylindrical symmetry in a linearly polarized light field represents an optomechanical librator. Here, we propose and theoretically analyze an optimal measurement scheme for the two angular degrees of freedom of such a librator. The imprecision-backaction product of this scheme reaches the Heisenberg uncertainty limit. Furthermore, we propose and analyze a realistic measurement scheme and show that, in the absence of spinning motion around the symmetry axis, measurement-based ground-state cooling of the rotational degrees of freedom of an anisotropic point scatterer levitated in an optical trap is feasible.
Keywords
Cite
@article{arxiv.2109.08444,
title = {Optimal orientation detection of an anisotropic dipolar scatterer},
author = {Felix Tebbenjohanns and Andrei Militaru and Andreas Norrman and Fons van der Laan and Lukas Novotny and Martin Frimmer},
journal= {arXiv preprint arXiv:2109.08444},
year = {2022}
}