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Balthazar WF, Souza CE, Caetano DP, et al. Tripartite nonseparability in classical optics. Opt Lett. 2016;41(24):5797-5800doi: 10.1364/OL.41.005797.
Balthazar, W. F., Souza, C. E., Caetano, D. P., Galvão, E. F., Huguenin, J. A., & Khoury, A. Z. (2016). Tripartite nonseparability in classical optics. Optics letters, 41(24), 5797-5800. https://doi.org/10.1364/OL.41.005797
Balthazar, W F, et al. "Tripartite nonseparability in classical optics." Optics letters vol. 41,24 (2016): 5797-5800. doi: https://doi.org/10.1364/OL.41.005797
Balthazar WF, Souza CE, Caetano DP, Galvão EF, Huguenin JA, Khoury AZ. Tripartite nonseparability in classical optics. Opt Lett. 2016 Dec 15;41(24):5797-5800. doi: 10.1364/OL.41.005797. PMID: 27973505.
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Opt Lett. 2016 Dec 15;41(24):5797-5800. doi: 10.1364/OL.41.005797.

Tripartite nonseparability in classical optics.

Optics letters

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

PMID: 27973505 DOI: 10.1364/OL.41.005797

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 nonseparable, 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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