Utilization of Photon Orbital Angular Momentum in the Low-Frequency Radio Domain

Bo Thidé, Holger L Then, J. Sjöholm, K. Palmer, J.~E.~S. Bergman, T.~D. Carozzi, Ya. N. Istomin, N.~H. Ibragimov, R. Khamitova

Research output: Contribution to journalArticle (Academic Journal)peer-review

678 Citations (Scopus)
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Abstract

We show numerically that vector antenna arrays can generate radio beamsthat exhibit spin and orbital angular momentum characteristics similarto those of helical Laguerre-Gauss laser beams in paraxial optics. Forlow frequencies (≲1GHz), digital techniques can be used tocoherently measure the instantaneous, local field vectors and tomanipulate them in software. This enables new types of experiments thatgo beyond what is possible in optics. It allows information-rich radioastronomy and paves the way for novel wireless communication concepts.
Original languageEnglish
Article number087701
Number of pages1
JournalPhysical Review Letters
Volume99
Issue number8
Early online date22 Aug 2007
DOIs
Publication statusPublished - 24 Aug 2007

Keywords

  • Antennas: theory components and accessories, Infrared submillimeter wave microwave and radiowave instruments and equipment, Polarization, Radio microwave
  • orbital angular momentum

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