Quasi-intrinsic angular momentum and the measurement of its spectrum

Zambrini, R. and Barnett, S. M. (2006) Quasi-intrinsic angular momentum and the measurement of its spectrum. Physical Review Letters, 96(11), p. 113901. (doi:10.1103/PhysRevLett.96.113901)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.96.113901

Abstract

We introduce the concept of quasi-intrinsic angular momentum to denote fields for which the mean value of the angular momentum is unaltered by a lateral shift of the rotation axis but the spectrum changes. This property is exemplified by the orbital angular momentum of a beam of light about its propagation direction. We propose an interferometric experiment to measure efficiently the exact angular momentum spectrum and variance for light beams with any arbitrary spatial distribution.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barnett, Professor Stephen
Authors: Zambrini, R., and Barnett, S. M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
331501Multi-dimensional quantum entanglement and high density information transferMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)GR/S03904/01Physics and Astronomy