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Asymmetric multipartite Greenberger-Horne-Zeilinger states and Bell inequalities
Citation
Gosal, D., Kaszlikowski, D., Kwek, L. C., Żukowski, M., & Oh, C. H. (2004). Asymmetric multipartite Greenberger-Horne-Zeilinger states and Bell inequalities. Physical Review A, 70(4), Article 042106. https://doi.org/10.1103/PhysRevA.70.042106
Abstract
We study the multiparticle generalized GHZ states. It has been shown that for an odd number of qubits and for a specific range of parameters, they do not violate any Bell inequality for correlation functions. We show here both analytically and numerically that, nevertheless, such states violate local realism, once a more detailed analysis of the correlations is made than the one allowed by correlation functions. The results imply that multiparticle Clauser-Horne-type inequalities involving probabilities are stronger tools for analyzing violations of local realism in multiparticle systems than inequalities involving the correlation functions.
Date Issued
2004
DOI
10.1103/PhysRevA.70.042106