Entropy inequalities and Bell inequalities for two-qubit systems

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URI: http://hdl.handle.net/10902/1821
ISSN: 1050-2947
ISSN: 1094-1622
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Author
Santos Corchero, Emilio
Date
2004-02-17
Derechos
© 2004 The American Physical Society
Publicado en
Physical Review. A, Atomic, molecular, and optical physics, vol. 69, iss. 2, art. num. 022305, (2004)
Physical Review. A, Atomic, molecular, and optical physics, vol. 70, iss. 5, art. num. 059901, (2004)
Publisher
American Physical Society
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Abstract:
Sufficient conditions for the nonviolation of the Bell-Clauser-Horne-Shimony-Holt inequalities in a mixed state of a two-qubit system are: (1) the linear entropy of the state is not smaller than 0.457; (2) the sum of the conditional linear entropies is not smaller than -0.086; (3) the von Neumann entropy is not smaller than 0.833; and (4) the sum of the conditional von Neumann entropies is not smaller than 0.280.
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