Utilization of photon orbital angular momentum in the low-frequency radio domain.

By B. Thid'e, H. Then, J. Sjöholm, K. Palmer, J. Bergman, T. Carozzi, Y. Istomin, Nail H. Ibragimov, R. Khamitova. Physical Review Letters, 2007

1,021 citations recorded by the source corpus.

We show numerically that vector antenna arrays can generate radio beams that exhibit spin and orbital angular momentum characteristics similar to those of helical Laguerre-Gauss laser beams in paraxial optics. For low frequencies (< or = 1 GHz), digital techniques can be used to coherently measure the instantaneous, local field vectors and to manipulate them in software. This enables new types of experiments that go beyond what is possible in optics. It allows information-rich radio astronomy and paves the way for novel wireless communication concepts.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/0e15715debd0a700242264e06f84fd9e37ac86a3

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Citations in the corpus

Orbital-Angular-Momentum-Based Electromagnetic Vortex Imaging (2015, methodology): “To date, there have been some reports on the generation of OAM-carrying fields [5], [11]–[13].”
Transmission Characteristics of a Twisted Radio Wave Based on Circular Traveling-Wave Antenna (2015, methodology): “The first radio OAM simulation was performed in 2007 [3], which demonstrated that OAM modes are orthogonal among one another and can be allowed in principle to increase the transmission capacity.”
Vision, Requirements, and Technology Trend of 6G: How to Tackle the Challenges of System Coverage, Capacity, User Data-Rate and Movement Speed (2020, background): “Spacing OAM has a great number of topological charges, that is, OAM-modes [12].”
Measurement of the spin of the M87 black hole from its observed twisted light (2019, background): “OAM beams are detectable and can be accurately characterized with interferometric techniques that directly measure amplitude, intensity and phase, as has been demonstrated experimentally in the radio domain (Thidé et al. 2007; Tamburini et al. 2011b, 2012).”
Generation of OAM Beams Using Phased Array in the Microwave Band (2016, background): “The measured field distributions are quite similar to the simulated ones as well as the theoretical results [16], [17].”
Is Orbital Angular Momentum (OAM) Based Radio Communication an Unexploited Area? (2012, methodology): “I T WAS recently shown that the photon orbital angular momentum (OAM) can be used in the low frequency radio domain and is not restricted to the optical frequency range [1].”
Electron vortices: Beams with orbital angular momentum (2017, background): “…microscopy (Baranek and Bouchal, 2013; Fürhapter et al., 2005; Züchner et al., 2011); as well as further proposed applications in quantum information and metrology (Molina-Terriza et al., 2007; Yao and Padgett, 2011) and astronomy (Lee et al., 2006; Tamburini et al., 2011; Thidé et al., 2007).”
Circular Polarized Patch Antenna Generating Orbital Angular Momentum (2014, neutral): “Starting from this ﬁrst demonstration, several systems generating EM ﬁelds with non-zero OAM have been proposed [5–9].”