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arXiv · 0911.0544

Single-photon spin-orbit entanglement violating a Bell-like inequality

Lixiang Chen·Weilong She
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Abstract

Single photons emerging from q-plates (or Pancharatnam-Berry phase optical element) exhibit entanglement in the degrees of freedom of spin and orbital angular momentum. We put forward an experimental scheme for probing the spin-orbit correlations of single photons. It is found that the Clauser-Horne-Shimony-Holt (CHSH) parameter S for the single-photon spin-orbit entangled state could be up to 2.828, evidently violating the Bell-like inequality and thus invalidating the noncontextual hidden variable (NCHV) theories.

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Lixiang Chen, Weilong She. 2009-11-03. Single-photon spin-orbit entanglement violating a Bell-like inequality. https://doi.org/10.1364/josab.27.0000a7

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