Optimal orientation detection of an anisotropic dipolar scatterer
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Date
2022-05
Publication Type
Journal Article
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yes
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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???back-action 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 groundstate cooling of the rotational degrees of freedom of an anisotropic point scatterer levitated in an optical trap is feasible.
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published
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Journal / series
Volume
105 (5)
Pages / Article No.
53504
Publisher
American Physical Society
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Organisational unit
03944 - Novotny, Lukas / Novotny, Lukas
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Funding
ETH-47 20-2 - Levitated Quantum Rotors (ETHZ)