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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Abstract
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 |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Padgett, Professor Miles and Franke-Arnold, Professor Sonja and Leach, Mr Jonathan and Barnett, Professor Stephen and Romero, Dr Jacqui |
| 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: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Published Online: | 11 March 2011 |
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