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arXiv · 2606.06101

Quantum-limited estimation of atmospheric turbulence via spatial mode decomposition

A. Hrebeniuk·M. Klen·I. Karuseichyk·N. Treps·A. A. Semenov
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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.

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A. Hrebeniuk, M. Klen, I. Karuseichyk, N. Treps, A. A. Semenov. 2026-06-04. Quantum-limited estimation of atmospheric turbulence via spatial mode decomposition. https://arxiv.org/abs/2606.06101

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