Local discrimination of orbital angular momentum in entangled states
Quantum Physics
2025-02-18 v1 Optics
Abstract
We address the use of a calcite crystal-based local detector to the discrimination of orbital angular momentum of quantum radiation produced by parametric down conversion. We demonstrate that a discrimination can be obtained exploiting the introduction of a fine and controlled spatial shift between two replicas of the state in the crystals. We believe that this technology could be used for future development of long-distance quantum communication techniques, where information encoding is based on orbital angular momentum.
Keywords
Cite
@article{arxiv.2309.00295,
title = {Local discrimination of orbital angular momentum in entangled states},
author = {Simone Cialdi and Edoardo Suerra and Samuele Altilia and Stefano Olivares and Bruno Paroli and Marco A. C. Potenza and Mirko Siano and Matteo G. A. Paris},
journal= {arXiv preprint arXiv:2309.00295},
year = {2025}
}