Optimal GHZ Paradox for Three Qubits

• DOI: 10.1038/srep13080
• Publication Date: 2015-08-14T09:13:01Z
• Authors: Changliang Ren; Hong-Yi Su; Zhen-Peng Xu; Chunfeng Wu; Jing-Ling Chen
• Keywords: Characterization

Abstract Quatum nonlocality as a valuable resource is of vital importance in quantum information processing. The characterization the has been extensively investigated mainly for pure states, while relatively less know mixed states. Here we prove existence optimal GHZ paradox by using novel and simple method to extract an state that can saturate tradeoff relation between purity. In this paradox, logical inequality which formulated GHZ-typed event probabilities be violated maximally any fixed amount purity (or mixedness). Moreover, described standard suffering flipped color noise. maximal noise resist 50%. We suggest our result step toward deeper understanding role played AVN proof useful physical resource.