Experimental Test of Quantum Contextuality in Neutron Interferometry

Journal Article · Fri Jul 24 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.040403· OSTI ID:21347071

Bartosik, H; Klepp, J; Schmitzer, C; Sponar, S; Hasegawa, Y ^[1]; Cabello, A ^[2]; Rauch, H ^[1]

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1. Atominstitut der Oesterreichischen Universitaeten, Stadionallee 2, A-1020 Wien (Austria)
2. Departamento de Fisica Aplicada II, Universidad de Sevilla, E-41012 Sevilla (Spain)

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+-0.008not<=1 clearly shows that quantum mechanical predictions cannot be reproduced by noncontextual hidden-variable theories.

• OSTI ID: 21347071
• Journal Information: Physical Review Letters, Vol. 103, Issue 4; Other Information: DOI: 10.1103/PhysRevLett.103.040403; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HIDDEN VARIABLES
INTERFEROMETRY
NEUTRONS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
SPIN
ANGULAR MOMENTUM
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MECHANICS
NUCLEONS
PARTICLE PROPERTIES