dorsal/arxiv
View SchemaTwo qubits of a W state violate Bell's inequality beyond Cirel'son's bound
| Authors | Adan Cabello |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0205183 |
| URL | https://arxiv.org/abs/quant-ph/0205183 |
| DOI | 10.1103/PhysRevA.66.042114 |
| Journal | Phys. Rev. A 66 (2002) 042114; 67 (2003) 029901 |
Abstract
It is shown that the correlations between two qubits selected from a trio prepared in a W state violate the Clauser-Horne-Shimony-Holt inequality more than the correlations between two qubits in any quantum state. Such a violation beyond Cirel'son's bound is smaller than the one achieved by two qubits selected from a trio in a Greenberger-Horne-Zeilinger state [A. Cabello, Phys. Rev. Lett. 88, 060403 (2002)]. However, it has the advantage that all local observers can know from their own measurements whether their qubits belongs or not to the selected pair.
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"abstract": "It is shown that the correlations between two qubits selected from a trio\nprepared in a W state violate the Clauser-Horne-Shimony-Holt inequality more\nthan the correlations between two qubits in any quantum state. Such a violation\nbeyond Cirel\u0027son\u0027s bound is smaller than the one achieved by two qubits\nselected from a trio in a Greenberger-Horne-Zeilinger state [A. Cabello, Phys.\nRev. Lett. 88, 060403 (2002)]. However, it has the advantage that all local\nobservers can know from their own measurements whether their qubits belongs or\nnot to the selected pair.",
"arxiv_id": "quant-ph/0205183",
"authors": [
"Adan Cabello"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.66.042114",
"journal_ref": "Phys. Rev. A 66 (2002) 042114; 67 (2003) 029901",
"title": "Two qubits of a W state violate Bell\u0027s inequality beyond Cirel\u0027son\u0027s bound",
"url": "https://arxiv.org/abs/quant-ph/0205183"
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