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arXiv · 1110.0101

Pairwise Quantum Correlations for Superpositions of Dicke States

Zhengjun Xi·Heng-Na Xiong·Yongming Li·Xiaoguang Wang
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Abstract

Pairwise correlation is really an important property for multi-qubit states. For the two-qubit X states extracted from Dicke states and their superposition states, we obtain a compact expression of the quantum discord by numerical check. We then apply the expression to discuss the quantum correlation of the reduced two-qubit states of Dicke states and their superpositions, and the results are compared with those obtained by entanglement of formation, which is a quantum entanglement measure.

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Zhengjun Xi, Heng-Na Xiong, Yongming Li, Xiaoguang Wang. 2012-01-19. Pairwise Quantum Correlations for Superpositions of Dicke States. https://doi.org/10.1088/0253-6102%2F57%2F5%2F06

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