Evaluating the Maximal Violation of the Original Bell Inequality by Two-Qudit States Exhibiting Perfect Correlations/Anticorrelations

Abstract

We introduce the general class of symmetric two-qubit states guaranteeing the perfect correlation or anticorrelation of Alice and Bob outcomes whenever some spin observable is measured at both sites. We prove that, for all states from this class, the maximal violation of the original Bell inequality is upper bounded by 3/2 and specify the two-qubit states where this quantum upper bound is attained. The case of two-qutrit states is more complicated. Here, for all two-qutrit states, we obtain the same upper bound 3/2 for violation of the original Bell inequality under Alice and Bob spin measurements, but we have not yet been able to show that this quantum upper bound is the least one. We discuss experimental consequences of our mathematical study.

12 pp

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Cited by in corpus (6)

• Bohm-Bell type experiments: Classical probability approach to (no-)signaling and applications to quantum physics and psychology
• Quantum versus classical entanglement: eliminating the issue of quantum nonlocality
• The generalized Gell-Mann representation and violation of the CHSH inequality by a general two-qudit state
• Quantum analog of the original Bell inequality for two-qudit states with perfect correlations/anticorrelations
• Specifying nonlocality of a pure bipartite state and analytical relations between measures for bipartite nonlocality and entanglement
• High-spin measurements in an arbitrary two-qudit state