Functional Bell inequalities can serve as a stronger entanglement witness than conventional Bell inequalities
- 30 December 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 66 (6) , 062318
- https://doi.org/10.1103/physreva.66.062318
Abstract
We consider a Bell inequality for a continuous range of settings of the apparatus at each site. This “functional” Bell inequality gives a better range of violation for generalized Greenberger, Horne, and Zeilinger states. Also a family of N-qubit bound entangled states violate this inequality for
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