Friday, July 6, 2012

1207.1212 (Pawel Kurzynski et al.)

Practically state-independent test of contextuality with 9 observables    [PDF]

Pawel Kurzynski, Dagomir Kaszlikowski
We propose a test of quantum contextuality for a single three-level system that uses nine projective measurements. It has a form of an inequality that has to be satisfied by any non-contextual theory and which is violated by any quantum state, except for the maximally mixed one. Due to the fact that there is only a single state that does not exhibit contextuality, it is natural to ask what the difference between state-independent tests and the one proposed here is.
View original: http://arxiv.org/abs/1207.1212

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