Tighter entanglement monogamy relations of qubit systems

Zhi-Xiang Jin and Shao-Ming Fei

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Submission date: 15. Feb. 2017
Pages: 7
published in: Quantum information processing, 16 (2017) 3, art-no. 77 
DOI number (of the published article): 10.1007/s11128-017-1520-3
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Abstract:
Monogamy relations characterize the distributions of entanglement in multipartite systems. We investigate monogamy relations related to the concurrence C and the entanglement of formation E. We present new entanglement monogamy relations satisfied by the α-th power of concurrence for all α ≥ 2, and the α-th power of the entanglement of formation for all α ≥. These monogamy relations are shown to be tighter than the existing ones.