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18 January 2025

» arxiv » 2309.00295

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Local discrimination of orbital angular momentum in entangled states
Simone Cialdi ; Edoardo Suerra ; Samuele Altilia ; Stefano Olivares ; Bruno Paroli ; Marco A. C. Potenza ; Mirko Siano ; Matteo G. A. Paris ;
Date:	1 Sep 2023
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.
Source:	arXiv, 2309.00295
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