Comment on "Quantum nonlocality for a three-particle nonmaximally entangled state without inequalities"
Quantum Physics
2007-05-23 v1
Abstract
In a recent Brief Report, Zheng [S-B. Zheng, PRA 66, 014103 (2002)] has given a proof of nonlocality without using inequalities for three spin-1/2 particles in the nonmaximally entangled state |psi> = cos\theta |+++> + i sin\theta |-->. Here we show that Zheng's proof is not correct. Indeed it is the case that, for the experiment considered by Zheng, the only state that admits a nonlocality proof without inequalities is the maximally entangled state.
Keywords
Cite
@article{arxiv.quant-ph/0312046,
title = {Comment on "Quantum nonlocality for a three-particle nonmaximally entangled state without inequalities"},
author = {Jose L. Cereceda},
journal= {arXiv preprint arXiv:quant-ph/0312046},
year = {2007}
}
Comments
REVTeX4, 2 pages