Tighter monogamy and polygamy relations of multiparty quantum entanglement

被引：0
作者：
Limin Gao
Fengli Yan
Ting Gao
机构：
[1] Hebei Normal University,College of Physics
[2] Hebei Normal University,School of Mathematical Sciences
来源：
Quantum Information Processing | 2020年 / 19卷
关键词：
Monogamy relation; Polygamy relation; Multiparty system; Quantum entanglement;
D O I：
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学科分类号：
摘要：
We explore monogamy and polygamy relations of entanglement in multipartite systems. By using the power of the bipartite entanglement measure, we establish a class of tight monogamy relations of multiparty entanglement with larger lower bounds in comparison to all known entanglement monogamy relations. We also give a class of tight polygamy relations of multiparty entanglement with smaller upper bounds than the existing ones, in terms of the power of the entanglement of assistance. We provide examples in which our new monogamy and polygamy relations are tighter than the previous ones.
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