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arXiv · 1502.07338

Progress towards Bell-type polarization experiment with thermal neutrons

M. Iannuzzi·R. Messi·D. Moricciani·A. Orecchini·F. Sacchetti
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Abstract

Experimental tests of Bell-type inequalities distinguishing between quantum mechanics and local realistic theories remain of considerable interest if performed on massive particles, for which no conclusive result has yet been obtained. Only two-particle experiments may specifically test the concept of spatial nonlocality in quantum theory, whereas single-particle experiments may generally test the concept of quantum noncontextuality. Here we have performed the first Bell-type experiment with a beam of thermal-neutron pairs in the singlet state of spin, as originally suggested by J. S. Bell. These measurements confirm the quantum-theoretical predictions, in agreement with the results of the well-known polarization experiments carried out on optical photons years ago.

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M. Iannuzzi, R. Messi, D. Moricciani, A. Orecchini, F. Sacchetti. 2015-02-25. Progress towards Bell-type polarization experiment with thermal neutrons. https://doi.org/10.1103/physreva.91.020102

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