Sampling the spatial coherence of light
We introduce an 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.
Authors
- L. Motka (ORCID: https://orcid.org/0000-0002-4247-5528)
- Dominik Koutný (ORCID: https://orcid.org/0000-0003-1558-833X)
- Michal Peterek (ORCID: https://orcid.org/0000-0002-4720-1729)
- Z. Hradil (ORCID: https://orcid.org/0000-0001-8732-4638)
- J. Řeháček (ORCID: https://orcid.org/0000-0002-4969-2760)
- Martin Paùr (ORCID: https://orcid.org/0000-0002-6675-2294)
- L. L. Sánchez-Soto (ORCID: https://orcid.org/0000-0002-7441-8632)
- B. Stoklasa (ORCID: https://orcid.org/0000-0003-1169-1428)
- M. Vítek (ORCID: https://orcid.org/0000-0003-4999-2867)
Institutions
- Universidad Complutense de Madrid (ES)
- Chapman University (US)
- Max Planck Institute for the Science of Light (DE)
- Palacký University Olomouc (CZ)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2025-03-31
- DOI
- https://doi.org/10.1103/physreva.111.033533
- Primary Topic
- Random lasers and scattering media
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Univerzita Palackého v Olomouci
- QuantERA
- Agencia Estatal de Investigación
- Kavli Institute for Theoretical Physics, University of California, Santa Barbara