Entangled photons, nonlocality, and Bell inequalities in the undergraduate laboratory
By D. Dehlinger, Morgan W. Mitchell. 2002
171 citations recorded by the source corpus.
We use polarization-entangled photon pairs to demonstrate quantum nonlocality in an experiment suitable for advanced undergraduates. The photons are produced by spontaneous parametric downconversion using a violet diode laser and two nonlinear crystals. The polarization state of the photons is tunable. Using an entangled state analogous to that described in the Einstein–Podolsky–Rosen paradox, we demonstrate strong polarization correlations of the entangled photons. Bell’s idea of a hidden variable theory is presented by way of an example and compared to the quantum prediction. A test of the Clauser, Horne, Shimony, and Holt version of the Bell inequality finds S=2.307±0.035, in clear contradiction of hidden variable theories. The experiments described can be performed in an afternoon.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/79dc5c34f9a730b27a2fb1acf9755c1f2c23f6ed
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In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Spontaneous parametric down-conversion (2018, background): “There are easy ways to avoid these ‘labelling’ by using compensating crystals (see [8] for instance).”