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Violation of Bell s inequalities and distillability for N qubits

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Published in Journal of Physics. A, Mathematical and General. 2003, vol. 36, no. 2, p. L21-L29
Abstract We consider quantum systems composed of N qubits, and the family of all Bell's correlation inequalities for two two-valued measurements per site. We show that if an N-qubit state ρ violates any of these inequalities, then it is at least bipartite distillable. Indeed there exists a link between the amount of Bell's inequality violation and the degree of distillability. Thus, we strengthen the interpretation of Bell's inequalities as detectors of useful entanglement.
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ACIN, Antonio, SCARANI, Valerio, WOLF, Michael. Violation of Bell s inequalities and distillability for N qubits. In: Journal of Physics. A, Mathematical and General, 2003, vol. 36, n° 2, p. L21-L29. https://archive-ouverte.unige.ch/unige:47353

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Deposited on : 2015-02-27

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