Polygamy Inequalities for Qubit Systems

Xue-Na Zhu, Zhi-Xiang Jin, and Shao-Ming Fei

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Submission date: 21. Aug. 2019
Pages: 7
published in: International journal of theoretical physics, 58 (2019) 8, p. 2488-2496 
DOI number (of the published article): 10.1007/s10773-019-04139-y
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Abstract:
Entanglement polygamy, like entanglement monogamy, is a fundamental property of multipartite quantum states. We investigate the polygamy relations related to the concurrence C and the entanglement of formation E for general n-qubit states. We extend the results in [Phys. Rev. A 90, 024304 (2014)] from the parameter region α ≤ 0 to α ≤ α₀, where 0 < α₀ ≤ 2 for C, and 0 < α₀ ≤ for E.