Entanglement Monogamy Relations of Qubit Systems
Xue-Na Zhu and Shao-Ming Fei
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Submission date: 15. Sep. 2014
published in: Physical review / A, 90 (2014) 2, art-no. 024304
DOI number (of the published article): 10.1103/PhysRevA.90.024304
PACS-Numbers: 03.67.Mn, 03.65.Ud
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We investigate the monogamy relations related to the concurrence and the entanglement of formation. General monogamy inequalities given by the αth power of concurrence and entanglement of formation are presented for N-qubit states. The monogamy relation for entanglement of assistance is also established. Based on these general monogamy relations, the residual entanglement of concurrence and entanglement of formation are studied. Some relations among the residual entanglement, entanglement of assistance and three tangle are also presented.