Quantum-limited estimation of atmospheric turbulence via spatial mode decomposition

Abstract:We establish the ultimate precision limit for estimating the optical spatial coherence radius (Fried parameter) within a quantum metrological framework. In the weak field regime, we show that spatial-mode decomposition -- originally introduced for superresolution imaging -- enables substantially more precise estimation than conventional direct imaging when the receiver aperture is smaller than the coherence radius.

Quantum Physics (quant-ph); Atmospheric and Oceanic Physics (physics.ao-ph); Optics (physics.optics)

arXiv:2606.06101 [quant-ph]

(or arXiv:2606.06101v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2606.06101 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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