Lower Bounds of Concurrence for Tripartite Quantum Systems
Xiu-Hong Gao, Shao-Ming Fei, and Ke Wu
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Submission date: 01. Nov. 2006
published in: Physical review / A, 74 (2006) 5, art-no. 050303
DOI number (of the published article): 10.1103/PhysRevA.74.050303
PACS-Numbers: 03.67.Mn, 03.65.Ud, 89.70.+c
Keywords and phrases: Concurrence, lower bound, Tripartite mixed state
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We derive an analytical lower bound for the concurrence of tripartite quantum mixed states. A functional relation is established relating concurrence and the generalized partial transpositions.