2013/02/13 by F. Tamburini, Fabrizio Tamburini, B. Thidé +19 · 1 voice
Engineering · Materials Science · Mathematics · Physics and Astronomy · #Angular momentum #Classical Physics (physics.class-ph) #Classical mechanics #Computer science #Electronic engineering #Engineering #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Keying #Mathematics #Metamaterials and Metasurfaces Applications #Optical Wireless Communication Technologies #Optics (physics.optics) #Orbital Angular Momentum in Optics #Orbital angular momentum of light #Physics #Radio frequency #Realization (probability) #Space Physics (physics.space-ph) #Telecommunications #Total angular momentum quantum number #Wireless #astro-ph.IM #physics.class-ph #physics.optics #physics.space-ph
paper · pdf · doi:10.48550/arxiv.1302.2990
7 pages, 3 figures. Corrected version
openalex publication_date 2013/02/13 · arxiv created 2013/02/14 · arxiv updated 2013/02/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In a series of fundamental proof-of-principle experiments, comprising numerical, controlled laboratory, and real-world experimentation, we have shown that it is possible to use the angular momentum physical layer for radio science and radio communication applications. Here we report a major, decisive step toward the realization of the latter, in the form of the real-world experimental demonstration that a radio beam carrying orbital angular momentum (OAM) can readily be digitally phase shift modulated and that the information thus encoded can be effectively transferred in free space to a remote receiver. The experiment was carried out in an urban setting and showed that the information transfer is robust against ground reflections and interfering radio signals. The importance of our results lies in the fact that digital phase shift keying (PSK) protocols are used in many present-day wireless communication scenarios, allowing new angular momentum radio implementations to use methods and protocols that are backward compatible with existing linear momentum ones.