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arXiv · 1511.02265

Tripartite non-separability in classical optics

W. F. Balthazar·C. E. R. Souza·D. P. Caetano·E. F. Galvão·J. A. O. Huguenin·A. Z. Khoury
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Abstract

It is possible to prepare classical optical beams which cannot be characterized by a tensor product of vectors describing each of their degrees of freedom. Here we report the experimental creation of such a non-separable, tripartite GHZ-like state of path, polarization and transverse modes of a classical laser beam. We use a Mach-Zehnder interferometer with an additional mirror and other optical elements to perform measurements that violate Mermin's inequality. This demonstration of a classical optical analogue of tripartite entanglement paves the path to novel optical applications inspired by multipartite quantum information protocols.

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W. F. Balthazar, C. E. R. Souza, D. P. Caetano, E. F. Galvão, J. A. O. Huguenin, A. Z. Khoury. 2015-11-06. Tripartite non-separability in classical optics. https://doi.org/10.1364/ol.41.005797

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