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Monogamy of Bell correlations and Tsirelson's bound
Benjamin Toner, Frank Verstraete
arXiv: quant-ph/0611001v1 (quant-ph)
5 pages, 1 intriguing figure
Licence : non indiquée (tous droits réservés)
Résumé : We consider three parties, A, B, and C, each performing one of two local measurements on a shared quantum state of arbitrary dimension. We characterize the trade-off between the nonlocality of the Bell correlations observed by AB and of those observed by AC. This generalizes Tsirelson's bound on the quantum value of the CHSH inequality, the latter being recovered when C is completely uncorrelated with AB. We also discuss the trade-off between Bell violations and local expectation values of observables that anticommute with the ones used in the Bell test.
Soumis à arXiv le 01 Nov. 2006