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Verification of the Violation of WWZB Inequality Using Werner States

Almeida, A. ; Pinto, L. M. ; André, P.S ; Pinto, A. N.

Journal of Physics: Conference Series Vol. 605, Nº 1, pp. 012036-1 - 012036-6, April, 2015.

ISSN (print): 1742-6588
ISSN (online): 1742-6596

Scimago Journal Ranking: 0,25 (in 2015)

Digital Object Identifier: 10.1088/1742-6596/605/1/012036

The generation and manipulation of entangled particles presents itself as one of
the most important results in quantum mechanics. With the work from Bell, it was possible to
prove the nonlocal nature of quantum mechanics, which is nowadays widely accepted. Apart
from being possible to prove entanglement from Bell's inequality, it is difficult to compute the
system as it increases the number of particles. Such a system containing N qubits can be
described by Werner-Wolf-Zukowski-Brukner (WWZB) inequality. In this work, we show how
to obtain the maximum of violation of WWZB inequality using a Werner state, simplifying the
problem considerably. We get two different results; one for a system containing and odd number
of particles and other for a system containing an even number.