1. Light beams with fractional orbital angular momentum and their vortex structure.
- Author
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Götte JB, O'Holleran K, Preece D, Flossmann F, Franke-Arnold S, Barnett SM, and Padgett MJ
- Subjects
- Computer Simulation, Radiation Dosage, Scattering, Radiation, Light, Models, Theoretical, Quantum Theory, Radiometry methods
- Abstract
Light emerging from a spiral phase plate with a non-integer phase step has a complicated vortex structure and is unstable on propagation. We generate light carrying fractional orbital angular momentum (OAM) not with a phase step but by a synthesis of Laguerre-Gaussian modes. By limiting the number of different Gouy phases in the superposition we produce a light beam which is well characterised in terms of its propagation. We believe that their structural stability makes these beams ideal for quantum information processes utilising fractional OAM states.
- Published
- 2008
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