Experimental Test of Quantum Contextuality in Neutron Interferometry

作者：Hannes Bartosik, Jürgen Klepp, Claus Schmitzer, Stephan Sponar, Adán Cabello, H. Rauch, Yuji Hasegawa · 发表于：Physical Review Letters · 年份：2009 · DOI：10.1103/physrevlett.103.040403 · 被引用次数：244 · 研究领域：Quantum Mechanics and Applications、Quantum Information and Cryptography、Statistical Mechanics and Entropy

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)10.1103/PhysRevLett.100.130404], a Bell-like state was generated, and three expectation values were determined. The observed violation 2.291 +/- 0.008 not less, dbl equals1 clearly shows that quantum mechanical predictions cannot be reproduced by noncontextual hidden-variable theories.