量子过程估计的性能自然限于制备和测量中的基本、随机和系统缺陷。由于标准数据分析技术假定理想器件的事实，这些缺陷可能导致过程重构中的相当大的误差。在这里，通过利用通用的辅助量子或经典相关性，我们提供了一个框架，通过一个单一的测量设备的量子动力学的估计。通过构造，该方法可以应用于具有校准的故障状态生成器和分析器的量子层析成像方案。具体地说，我们给出了“量子动力学的直接刻画”[M。Mohseni和D. A. Lidar，Phys. Rev. Lett. 97，170501（2006）]与不完美的贝尔状态分析器。我们证明，对于几个物理相关的噪声准备和测量，只有经典的相关性和小的数据处理开销足以完成完整的系统识别。此外，我们提供了最佳的输入状态，由于测量数据的反演误差放大是最小的。
英文摘要：
Performance of quantum process estimation is naturally limited to fundamental, random, and systematic imperfections in preparations and measurements. These imperfections may lead to considerable errors in the process reconstruction due to the fact that standard data analysis techniques presume ideal devices. Here, by utilizing generic auxiliary quantum or classical correlations, we provide a framework for estimation of quantum dynamics via a single measurement apparatus. By construction, this approach can be applied to quantum tomography schemes with calibrated faulty state generators and analyzers. Specifically, we present a generalization of "Direct Characterization of Quantum Dynamics" [M. Mohseni and D. A. Lidar, Phys. Rev. Lett. 97, 170501 (2006)] with an imperfect Bell-state analyzer. We demonstrate that, for several physically relevant noisy preparations and measurements, only classical correlations and small data processing overhead are sufficient to accomplish the full system identification. Furthermore, we provide the optimal input states for which the error amplification due to inversion on the measurement data is minimal.
Generation and read-out of many-body Bell correlations with a probe qubit
Qilimanjaro Quantum Tech（奇力马扎罗量子技术）；ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology（ICFO-光子科学研究所，巴塞罗那科学技术研究院）；Faculty of Physics, University of Warsaw（华沙大学物理学院）
Experimental certification of multipartite Bell correlations using only few-body symmetric correlations
East China Normal University（华东师范大学）；National University of Singapore（新加坡国立大学）；Universiteit Leiden（莱顿大学）；Sun Yat-sen University（中山大学）；Quantum Science Center of Guangdong–Hong Kong–Macao Greater Bay Area (Guangdong)（粤港澳大湾区量子科学中心（广东））
