论文标题
多部分量子系统特征的均匀连续性边界
Uniform continuity bounds for characteristics of multipartite quantum systems
论文作者
论文摘要
我们考虑用于获得多部分量子系统特征的（均匀）连续性边界的通用方法。我们特别注意在能量限制下，无限二的多部分量子系统。 通过这些方法，我们获得了多部分量子状态的几个重要特征的连续性界限：量子（条件）互信息，壁板纠缠，c式纠缠和相互信息的条件纠缠。对于大尺寸/能量，多部分量子相互信息的连续性边界在渐近上是紧密的。 获得的结果用于证明$ n $ - 分式壁板纠缠，c式纠缠的渐近连续性以及在能量约束下互相信息的条件纠缠。
We consider universal methods for obtaining (uniform) continuity bounds for characteristics of multipartite quantum systems. We pay a special attention to infinite-dimensional multipartite quantum systems under the energy constraints. By these methods we obtain continuity bounds for several important characteristics of a multipartite quantum state: the quantum (conditional) mutual information, the squashed entanglement, the c-squashed entanglement and the conditional entanglement of mutual information. The continuity bounds for the multipartite quantum mutual information are asymptotically tight for large dimension/energy. The obtained results are used to prove the asymptotic continuity of the $n$-partite squashed entanglement, c-squashed entanglement and the conditional entanglement of mutual information under the energy constraints.
