Abstract
In this paper, we construct a general Bell inequality for the graph state. Firstly, we show that the Bell inequality is maximally violated by graph state corresponding to some given graph. In addition, we obtain the classical bound and maximal quantum violation of Bell inequality are N + |n(i)|− 1 and \(N+(\sqrt {2}-1)(|n(i)|+1)\), respectively. Furthermore, the classical bound and maximal quantum violation of Bell inequality are dependent on the choice of the vertex for most graphs expect for complete graph.
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The author would like to thank anonymous referees for his/her valuable comments and suggestions which helped to improve the presentation of this paper.
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This research was partially supported by the National Natural Science Foundation of China(No.11571213, 11871318, 11771009) and the Fundamental Research Funds for the Central Universities (GK202007002).
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Niu, M., Chen, Z., Lv, X. et al. A Note of Bell Inequalities for Graph States. Int J Theor Phys 60, 2511–2519 (2021). https://doi.org/10.1007/s10773-020-04647-2
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DOI: https://doi.org/10.1007/s10773-020-04647-2