Nonlocality of two-qubit and three-qubit Schmidt-Correlated states

Ming-Jing Zhao, Zong-Guo Li, Bo Li, Shao-Ming Fei, Zhi-Xi Wang, and Xianqing Li-Jost

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Submission date: 27. Aug. 2010
Pages: 7
published in: Communications in theoretical physics, 56 (2011) 2, p. 253-257 
DOI number (of the published article): 10.1088/0253-6102/56/2/10
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Abstract:
We investigate the nonlocality of Schmidt-correlated (SC) states, and present analytical expressions of the maximum violation value of Bell inequalities. It is shown that the violation of Clauser-Horne-Shimony-Holt (CHSH) inequality is necessary and sufficient for the nonlocality of two-qubit SC states, whereas the violation of the Svetlichny inequality is only a sufficient condition for the genuine nonlocality of three-qubit SC states. Furthermore, the relations among the maximum violation values, concurrence and relative entropy entanglement are discussed.