Chen, L. and Romero, J. (2012) Hardy’s nonlocality proof using twisted photons. Optics Express, 20(19), p. 21687. (doi: 10.1364/OE.20.021687)
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Publisher's URL: http://dx.doi.org/10.1364/OE.20.021687
Abstract
Hardy’s nonlocality proof is considered as “the best version of Bell’s theorem”. We report an experimental implementation of this by measuring the orbital angular momentum (OAM) of entangled twisted photon pairs. Two advantages arise from using twisted photons. First, the limited OAM spectrum generated by parametric down-conversion provides a natural set of OAM non-maximally entangled states with selective degrees of entanglement. Second, the measurement of any non-trivial superposition of OAM states can be conveniently done with spatial light modulators. We measure states that are defined on asymmetric OAM Bloch spheres and show results which are incompatible with local realism.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Romero, Dr Jacqui |
| Authors: | Chen, L., and Romero, J. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Optics Express |
| Publisher: | Optical Society of America |
| ISSN: | 1094-4087 |
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