Entangled optical vortex links

Romero, J., Leach, J., Jack, B., Dennis, M.R., Franke-Arnold, S. , Barnett, S.M. and Padgett, M.J. (2011) Entangled optical vortex links. Physical Review Letters, 106(10), 100407. (doi:10.1103/PhysRevLett.106.100407) (PMID:21469778)

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Optical vortices are lines of phase singularity which percolate through all optical fields. We report the entanglement of linked optical vortex loops in the light produced by spontaneous parametric down-conversion. As measured by using a Bell inequality, this entanglement between topological features extends over macroscopic and finite volumes. The entanglement of photons in complex three-dimensional topological states suggests the possibility of entanglement of similar features in other quantum systems describable by complex scalar functions, such as superconductors, superfluids, and Bose-Einstein condensates.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Franke-Arnold, Professor Sonja and Leach, Mr Jonathan and Barnett, Professor Stephen and Romero, Dr Mary
Authors: Romero, J., Leach, J., Jack, B., Dennis, M.R., Franke-Arnold, S., Barnett, S.M., and Padgett, M.J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN (Online):1079-7114
Published Online:11 March 2011

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
474271Full-field quantum imagingMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/G011656/1Physics and Astronomy