dorsal/arxiv
View SchemaNonlocality without inequalities has not been proved for maximally entangled states
| Authors | Adan Cabello |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9911023 |
| URL | https://arxiv.org/abs/quant-ph/9911023 |
| DOI | 10.1103/PhysRevA.61.022119 |
| Journal | Phys. Rev. A 61 (2000) 022119 |
Abstract
Two approaches to extend Hardy's proof of nonlocality without inequalities to maximally entangled states of bipartite two-level systems are shown to fail. On one hand, it is shown that Wu and co-workers' proof [Phys. Rev. A 53, R1927 (1996)] uses an effective state which is not maximally entangled. On the other hand, it is demonstrated that Hardy's proof cannot be generalized by the replacement of one of the four von Neumann measurements involved in the original proof by a generalized measurement to unambiguously discriminate between non-orthogonal states.
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"abstract": "Two approaches to extend Hardy\u0027s proof of nonlocality without inequalities to\nmaximally entangled states of bipartite two-level systems are shown to fail. On\none hand, it is shown that Wu and co-workers\u0027 proof [Phys. Rev. A 53, R1927\n(1996)] uses an effective state which is not maximally entangled. On the other\nhand, it is demonstrated that Hardy\u0027s proof cannot be generalized by the\nreplacement of one of the four von Neumann measurements involved in the\noriginal proof by a generalized measurement to unambiguously discriminate\nbetween non-orthogonal states.",
"arxiv_id": "quant-ph/9911023",
"authors": [
"Adan Cabello"
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"doi": "10.1103/PhysRevA.61.022119",
"journal_ref": "Phys. Rev. A 61 (2000) 022119",
"title": "Nonlocality without inequalities has not been proved for maximally entangled states",
"url": "https://arxiv.org/abs/quant-ph/9911023"
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