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Proceedings Paper

Structured light, transmission, and scattering
Author(s): David L. Andrews
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Paper Abstract

Numerous theoretical and experimental studies have established the principle that beams conveying orbital angular momentum offer a rich scope for information transfer. However, it is not clear how far it is practicable to operate such a concept at the single-photon level - especially when such a beam propagates through a system in which scattering can occur. In cases where scattering leads to photon deflection, it produces losses; however in terms of the retention of information content, there should be more concern over forward scattering. Based on a quantum electrodynamical formulation of theory, this paper aims to frame and resolve the key issues. A quantum amplitude is constructed for the representation of single and multiple scattering events in the propagation an individual photon, from a suitably structured beam. The analysis identifies potential limitations of principle, undermining complete fidelity of quantum information transmission.

Paper Details

Date Published: 16 February 2011
PDF: 9 pages
Proc. SPIE 7950, Complex Light and Optical Forces V, 79500L (16 February 2011); doi: 10.1117/12.873878
Show Author Affiliations
David L. Andrews, Univ. of East Anglia Norwich (United Kingdom)

Published in SPIE Proceedings Vol. 7950:
Complex Light and Optical Forces V
David L. Andrews; Enrique J. Galvez; Jesper Glückstad, Editor(s)

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