Quantum-limited estimation of atmospheric turbulence via spatial mode decomposition

• URL: http://arxiv.org/abs/2606.06101v1
• Date: Thu, 04 Jun 2026 12:40:26 GMT
• Title: Quantum-limited estimation of atmospheric turbulence via spatial mode decomposition
• Abstract summary: We show that spatial-mode decomposition enables substantially more precise estimation than conventional direct imaging.<n>In the weak field regime, we show that spatial-mode decomposition enables substantially more precise estimation than conventional direct imaging.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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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