Reconstructing 2D spatial modes for classical and quantum light
Valentin A. Averchenko, Gaetano Frascella, Mahmoud Kalash, Andrea, Cavanna, Maria V. Chekhova
TL;DR
This paper introduces a direct measurement method to reconstruct 2D spatial modes of thermal and quantum light fields, enabling efficient analysis of complex multimode structures with results matching theoretical predictions.
Contribution
The paper presents a novel, straightforward approach for reconstructing 2D spatial modes of thermal and quantum light fields through intensity measurements and fluctuation analysis.
Findings
Successfully reconstructed modes of a multimode fiber.
Reconstructed spatial Schmidt modes of squeezed vacuum.
Results agree with theoretical models.
Abstract
We propose a method for finding 2D spatial modes of thermal field through a direct measurement of the field intensity and an offline analysis of its spatial fluctuations. Using this method, in a simple and efficient way we reconstruct the modes of a multimode fiber and the spatial Schmidt modes of squeezed vacuum generated via high-gain parametric down conversion. The reconstructed shapes agree with the theoretical results.
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