Quantum Fisher information for estimating N partially coherent point sources

A partially coherent object's localization parameters are shown to be theoretically estimable with higher precision than those of an incoherent object, and the maximum number of independent parameters that have non-vanishing precision in the sub-Rayleigh regime is 3 (compared to 2 for an incohe...

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Bibliographic Details
Published in:Optics express 2023-01, Vol.31 (2), p.2726-2743
Main Authors: Liang, Kevin, Wadood, S A, Vamivakas, A N
Format: Article
Language:English
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Summary:A partially coherent object's localization parameters are shown to be theoretically estimable with higher precision than those of an incoherent object, and the maximum number of independent parameters that have non-vanishing precision in the sub-Rayleigh regime is 3 (compared to 2 for an incoherent object). Normalization schemes, which are crucial in the proper interpretation of quantum Fisher information results in the presence of partial coherence, are introduced and detailed.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.474036