Sampling the spatial coherence of light
Quantum Physics
2025-04-04 v1
Abstract
We introduce a novel application of the Hartmann sensor, traditionally designed for wavefront sensing, to measure the coherence properties of optical signals. By drawing an analogy between the coherence matrix and the density matrix of a quantum system, we recast the sensor operation as a quantum estimation problem. We experimentally demonstrate its effectiveness in the regime where signals from different apertures significantly overlap, enabling information extraction beyond the reach of standard wavefront sensing.
Cite
@article{arxiv.2504.02031,
title = {Sampling the spatial coherence of light},
author = {M. Vitek and M. Peterek and D. Koutny and M. Paur and L. Motka and B. Stoklasa and J. Rehacek and Z. Hradil and L. L. Sanchez-Soto},
journal= {arXiv preprint arXiv:2504.02031},
year = {2025}
}
Comments
7 pages, 5 figures