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Progress towards Bell-type polarization experiment with thermal neutrons

M. Iannuzzi, R. Messi, D. Moricciani, A. Orecchini, and F. Sacchetti
Phys. Rev. A 91, 020102(R) – Published 25 February 2015

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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  • Received 5 September 2014

DOI:https://doi.org/10.1103/PhysRevA.91.020102

©2015 American Physical Society

Authors & Affiliations

M. Iannuzzi1, R. Messi1,2, D. Moricciani2,*, A. Orecchini3,4, and F. Sacchetti3

  • 1Dipartimento di Fisica, Università di Roma “Tor Vergata,” I-00133 Roma, Italy
  • 2INFN Sezione “Roma Tor Vergata,” I-00133 Roma, Italy
  • 3Dipartimento di Fisica e Geologia, Università di Perugia, I-06123 Perugia, Italy
  • 4Institut Laue-Langevin, F-38042 Grenoble, France

  • *Corresponding author: dario.moricciani@roma2.infn.it

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Vol. 91, Iss. 2 — February 2015

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