We establish a unified view of polygamy of multi-qubit entanglement. We first introduce a two-parameter generalization of entanglement of assistance namely unified entanglement of assistance for bipartite quantum states, and provide an analytic lowerbound in two-qubit systems. We show a broad class of polygamy inequalities of multi-qubit entanglement in terms of unified entanglement of assistance that encapsulates all known multi-qubit polygamy inequalities as special cases. We further show that this class of polygamy inequalities can be improved into tighter inequalities for three-qubit systems.
纠缠一夫多妻和纠缠一夫一妻一样，是多体量子态的一个基本性质。研究了一般$n$ -量子比特态的多偶性与并发度$C$和形成纠缠度$E$的关系.我们将[Phys. Rev. A 90，024304（2014）]中的结果从参数区域$α\leq0$扩展到$α\leqα_0$，其中$C$为$0<α_0\leq2$，$E$为$0<α_0\leq\sqrt{2}$。
The Richness of Bell Nonlocality: Generalized Bell Polygamy and Hyper-Polygamy
Institute of Theoretical Physics and Astrophysics, University of Gdańsk（格但斯克大学理论物理与天体物理研究所）；International Centre for Theory of Quantum Technologies, University of Gdansk（格但斯克大学量子技术理论国际中心）；Faculty of Physics, Ludwig Maximilian University（慕尼黑路德维希-马克西米利安大学物理学院）
General Monogamy and polygamy properties of quantum systems
一夫一妻制和一夫多妻制是纠缠的重要性质，它们刻画了多体系统的纠缠分布。分别基于$α$次$(0\leqα\leq γ)$幂纠缠测度和$β$次$(β\geq δ)$幂辅助纠缠测度研究了一般的一夫一妻和一夫多妻关系.我们说明了这些一夫一妻制和一夫多妻制的关系比文章[Quantum Inf Process 19，101]中的不等式更紧密，因此可以更精确地描述满足更强约束的纠缠态的纠缠分布。对于特定的纠缠度量，如并发和凸顶扩展负性，通过应用这些关系，可以得到相应的一夫一妻制和一夫多妻制不等式，这些不等式将文章[Quantum Inf Process 18，23]和[Quantum Inf Process 18，105]中现有的不等式作为特例。更多细节在实施例中呈现。
Trade-offs and experimental feasibility of nonlocal polygamy with two-outcome Bell inequalities
CRISP – Centre de Recerca Independent de sa Pobla（萨波拉独立研究中心）；Systems Research Institute, Polish Academy of Sciences（波兰科学院系统研究所）；Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences（波兰科学院尼古拉·哥白尼天文中心）；Center of Excellence in Artificial Intelligence, AGH University（AGH大学人工智能卓越中心）；Faculty of Physics, University of Warsaw（华沙大学物理学院）；Faculty of Physics and Applied Informatics, University of Lodz（罗兹大学物理与应用信息学院）
Tighter monogamy and polygamy relations in multiparty quantum systems
School of Mathematics and Science, Hebei GEO University（河北地质大学数学与科学学院）；Intelligent Sensor Network Engineering Research Center of Hebei Province, Hebei GEO University（河北省智能传感器网络工程研究中心）
