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Phys. Rev. A 62, 024101 (2000) [2 pages]

Linear entropy and Bell inequalities

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E. Santos*
Departamento de Física Moderna, Universidad de Cantabria, 39005 Santander, Spain

M. Ferrero
Departamento de Física, Universidad de Oviedo, 33007 Oviedo, Spain

Received 12 November 1999; published 19 July 2000

For mixed states of a pair of spin-1/2 particles, the positivity of the sum of the conditional linear entropies is a sufficient condition for the nonviolation of the Bell-CHSH (Clauser-Horne-Shimony-Holt) inequalities.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.62.024101
DOI:
10.1103/PhysRevA.62.024101
PACS:
03.65.Bz, 89.70.+c

*Electronic address: santose@besaya.unican.es

Electronic address: ferrero@pinon.ccu.uniovi.es