2009/04/30 by H. Bartosik, J. Klepp, C. Schmitzer +4 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.103.040403
published as Phys. Rev. Lett. 103 (2009) 040403 · REVTeX4, 4 pages, 3 figures
arxiv created 2009/07/23 · arxiv updated 2009/12/01
We performed an experimental test of the Kochen-Specker theorem based on an inequality derived from the Peres-Mermin proof, using spin-path (momentum) entanglement in a single neutron system. Following the strategy proposed by Cabello et al. [Phys. Rev. Lett. 100, 130404 (2008)], a Bell-like state was generated and three expectation values were determined. The observed violation 2.291 +/- 0.008 > 1 clearly shows that quantum mechanical predictions cannot be reproduced by noncontextual hidden variables theories.