Entangled optical vortex links
Romero, J. and Leach, J. and Jack, B. and Dennis, M. R. and Franke-Arnold, S. and Barnett, S. M. and Padgett, M. J. (2011) Entangled optical vortex links. Physical Review Letters, 106 (10). 100407. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.106.100407)
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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.
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Item type: Article ID code: 30183 Dates: DateEvent11 March 2011PublishedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 31 Mar 2011 04:12 Last modified: 11 Nov 2024 09:41 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/30183