Testing contextuality on quantum ensembles with one clean qubit

Details Testing contextuality on quantum ensembles with one clean qubit Testing contextuality on quantum ensembles with one clean qubit

2009-12-02

arxiv.org/abs/0912.0485v1

Phys. Rev. Lett. 104, 160501 (2010)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.104.160501

We present a protocol to evaluate the expectation value of the correlations of measurement outcomes for ensembles of quantum systems, and use it to experimentally demonstrate--under an assumption of fair sampling--the violation of an inequality that is satisfied by any non-contextual hidden-variables (NCHV) theory. The experiment is performed on an ensemble of molecular nuclear spins in the solid state, using established Nuclear Magnetic Resonance (NMR) techniques for quantum information processing (QIP).

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