Preprint 21/2017

Uniform Quantification of Correlations for Bipartite Systems

Ting-Gui Zhang, Hong Yang, Xianqing Li-Jost, and Shao-Ming Fei

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Submission date: 15. Feb. 2017
Pages: 6
published in: Physical review / A, 95 (2017) 4, art-no. 042316 
DOI number (of the published article): 10.1103/PhysRevA.95.042316
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Based on the relative entropy, we give a unified characterization of quantum correlations for nonlocality, steerability, discord and entanglement for any bipartite quantum states. For two-qubit states we show that the quantities obtained from quantifying nonlocality, steerabiity, entanglement and discord have strictly monotonic relationship. As for examples, the Bell diagonal states are studied in detail.

23.06.2018, 02:13