标题： 无输入的拓扑噪声鲁棒网络转向 显示英文标题

标题： Topologically noise robust network steering without inputs

摘要： 具有独立源的量子网络允许仅在每个网络节点进行一次测量，或者无需任何输入即可观察到量子非定域性或引导性。 受最近引入的交换引导概念的启发，我们在此考虑了一个没有输入的三角形网络场景，其中一方被信任以执行校准良好的测量。 在此场景中，我们首先提出一个线性见证来检测三角形网络交换引导性。 然后，通过使用达到该不等式最大值的相关性，并假设所有源都是相同的，我们可以自测试源生成的态以及不可信方的测量。 随后，我们将此框架扩展到具有任意数量节点的环形网络，其中其中一个节点是可信的。 有趣的是，这是第一个拓扑鲁棒的例子，即无需假设网络结构即可观察到引导性，同时在网络中也表现出抗噪声的量子优势。 此外，通过允许可信方对其子系统进行层析，我们证明了每一个双模纠缠态都会在环形网络中产生交换引导相关性。 为此，我们构建了线性见证来检测对应于每一个双模纠缠态的环形网络交换引导性。 显示英文摘要

摘要： Quantum networks with independent sources allow observing quantum nonlocality or steering with just a single measurement per node of the network, or without any inputs. Inspired by the recently introduced notion of swap-steering, we consider here the triangle network scenario without inputs, where one of the parties is trusted to perform a well-calibrated measurement. In this scenario, we first propose a linear witness to detect triangle network swap-steering. Then, by using the correlations that achieve the maximum value of this inequality, and assuming that all the sources are the same, we can self-test the state generated by the sources and the measurements of the untrusted party. We then extend this framework to ring networks with an arbitrary number of nodes with one of them being trusted. Interestingly, this is the first example of a topologically robust, that is, one can observe steerability without assuming the network structure of the network, as well as noise-robust quantum advantage in a network. Additionally, by allowing the trusted party to perform tomography of their subsystems, we demonstrate that every bipartite entangled state will result in swap-steerable correlations in the ring network. For this purpose, we construct linear witnesses to detect ring network swap-steering corresponding to every bipartite entangled state.