Quantum contextuality for a three-level system sans realist model
arXiv:1806.01171 · doi:10.1007/s10773-016-2974-2
Abstract
Recently, an interesting form of non-classical effect which can be considered as a form of contextuality within quantum mechanics, has been demonstrated for a four-level system by discriminating the different routes that are taken for measuring a single observable. In this paper, we provide a simpler version of that proof for a single qutrit, which is also within the formalism of quantum mechanics and without recourse to any realist hidden variable model. The degeneracy of the eigenvalues and the Lder projection rule play important role in our proof.
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