Monday, December 24, 2012

1212.5501 (Adan Cabello et al.)

State-independent contextuality with identical particles    [PDF]

Adan Cabello, Marcelo Terra Cunha
It has been recently conjectured that the state-independency of quantum contextuality may be lost when the indistinguishability of identical particles is taken into account. Here we show that quantum state-independent contextuality exists for any system of more than one identical bosonic qudits, and for most systems of fermionic qudits. The only exception is the case of d fermionic qudits, since there the dimension of the antisymmetric subspace is 1, which is insufficient for contextuality. For all the other cases, either the symmetry precludes the existence of physical states, or we provide an explicit method to produce quantum state-independent contextual correlations.
View original: http://arxiv.org/abs/1212.5501

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