1207.1952 (Akihito Soeda et al.)

Existence of two spin-1/2 states that are non-local yet non-contextual    [PDF]

Akihito Soeda, Pawel Kurzynski, Ravishankar Ramanathan, Kavan Modi, Dagomir Kaszlikowski

We investigate the set of spin-1 quantum states composed of two spin-1/2 particles in a symmetric state that violate the minimal contextual inequality, namely the Klyachko-Can-Binicoglu-Shumovsky (KCBS) inequality. The relationship between the KCBS contextual inequality and the CHSH inequality is investigated. We find that every state that is contextual with respect to the defined test of contextuality is nonlocal as per the CHSH test, but the converse is not true.

View original: http://arxiv.org/abs/1207.1952