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Nature 398, 189-190 (18 March 1999) | doi:10.1038/18296
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Bell's inequality test: more ideal than ever
Alain Aspect1
The experimental violation of Bell's inequalities confirms that a pair of entangled photons separated by hundreds of metres must be considered a single non-separable object — it is impossible to assign local physical reality to each photon.Bell's theorem1, formulated in 1964, is one of the profound scientific discoveries of the century.
- Alain Aspect is in the Laboratoire Charles Fabry, Unité Mixte de Recherche Associée au CNRS, Institut dOptique Théorique et Appliquée, BP 147-F91405, Orsay, France.
e-mail: Email: alain.aspect@iota.u-psud.fr
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