Dada, A. C. , Leach, J., Buller, G. S., Padgett, M. J. and Andersson, E. (2011) Experimental high-dimensional two-photon entanglement and violations of generalized Bell inequalities. Nature Physics, 7(9), pp. 677-680. (doi: 10.1038/nphys1996)
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Abstract
Quantum entanglement1, 2 plays a vital role in many quantum-information and communication tasks3. Entangled states of higher-dimensional systems are of great interest owing to the extended possibilities they provide. For example, they enable the realization of new types of quantum information scheme that can offer higher-information-density coding and greater resilience to errors than can be achieved with entangled two-dimensional systems (see ref. 4 and references therein). Closing the detection loophole in Bell test experiments is also more experimentally feasible when higher-dimensional entangled systems are used5. We have measured previously untested correlations between two photons to experimentally demonstrate high-dimensional entangled states. We obtain violations of Bell-type inequalities generalized to d-dimensional systems6 up to d=12. Furthermore, the violations are strong enough to indicate genuine 11-dimensional entanglement. Our experiments use photons entangled in orbital angular momentum7, generated through spontaneous parametric down-conversion8, 9, and manipulated using computer-controlled holograms.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Padgett, Professor Miles and Leach, Mr Jonathan and Dada, Dr Adetunmise |
| Authors: | Dada, A. C., Leach, J., Buller, G. S., Padgett, M. J., and Andersson, E. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Nature Physics |
| Publisher: | Nature Publishing Group |
| ISSN: | 1745-2473 |
| ISSN (Online): | 1745-2481 |
| Published Online: | 08 May 2011 |
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