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arXiv · 1807.05567

Contextuality in spin-orbit laser modes

M. H. M. Passos·W. F. Balthazar·J. Acacio de Barros·C. E. R. Souza·A. Z. Khoury·J. A. O. Huguenin
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Abstract

We experimentally observed the violation of Kujula-Dzhafarov noncontextuality inequalities by non-separable spin-orbit laser modes. Qubits are encoded on polarization and transverse modes of an intense laser beam. A spin-orbit non-separable mode was produced by means of a radial polarization converter (S-plate). The results show that contextuality can be investigated by using spin-orbit modes in a simple way, corroborating recent works stating that such system can emulate single-photon experiments. Additionally, an improvement in the non-separable mode preparation allowed us to observe a greater violation of the Clauser-Horne-Shimony-Holt inequality for such system. The results are in very good agreement with the theoretical predictions of quantum mechanics.

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M. H. M. Passos, W. F. Balthazar, J. Acacio de Barros, C. E. R. Souza, A. Z. Khoury, J. A. O. Huguenin. 2018-07-15. Contextuality in spin-orbit laser modes. https://doi.org/10.1103/physreva.98.062116

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