论文标题
真正的网络多部分纠缠
Genuine Network Multipartite Entanglement
论文作者
论文摘要
真正的多部分纠缠的标准定义源于评估对数量不断增长的量子系统的量子控制。我们认为，这个概念很容易被黑客入侵：实际上，能够分发双方纠缠的消息来源本身可以为任何$ k $生成真正的$ k $ - 分机纠缠状态。我们为真正的多部分纠缠提出了一个替代定义，如果无法通过在几个$ k $ - $ k $ - 分机的态度上应用本地痕迹的图表，即使在全球共享随机性的帮助下，量子状态是真正的网络网络$ k $ entangy-endangy-enver-engy-endangy。我们提供了真正的网络纠缠的分析和数值见证人，并重新解释了许多过去的量子实验作为此功能的演示。
The standard definition of genuine multipartite entanglement stems from the need to assess the quantum control over an ever-growing number of quantum systems. We argue that this notion is easy to hack: in fact, a source capable of distributing bipartite entanglement can, by itself, generate genuine $k$-partite entangled states for any $k$. We propose an alternative definition for genuine multipartite entanglement, whereby a quantum state is genuinely network $k$-entangled if it cannot be produced by applying local trace-preserving maps over several $k$-partite states distributed among the parties, even with the aid of global shared randomness. We provide analytic and numerical witnesses of genuine network entanglement, and we reinterpret many past quantum experiments as demonstrations of this feature.
