Tighter Constraints of Multiqubit Entanglement |
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| Authors: | Long-Mei Yang Bin Chen Shao-Ming Fei Zhi-Xi Wang |
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| Institution: | 1. School of Mathematical Sciences, Capital Normal University, Beijing 100048, China;2. College of Mathematical Science, Tianjin Normal University, Tianjin 300387, China;3. Max-Planck-Institute for Mathematics in the Sciences, 04103 Leipzig, Germany |
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| Abstract: | Monogamy and polygamy relations characterize the distributions of entanglement in multipartite systems.We provide classes of monogamy and polygamy inequalities of multiqubit entanglement in terms of concurrence, entanglement of formation, negativity, Tsallis-$q$ entanglement, and Rényi-$\alpha$ entanglement, respectively.We show that these inequalities are tighter than the existing ones for some classes of quantum states. |
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| Keywords: | monogamy relation polygamy relation entanglement measure |
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