论文标题
通过铃铛基尺寸测量的多部分纠缠措施
Multipartite entanglement measures via Bell basis measurements
论文作者
论文摘要
我们展示了如何从Bell基础测量数据中估算一类广泛的多部分纠缠措施。除了降低相对于先前已知的估计这些措施的方法的实验要求外，我们的提议方案还可以更简单地分析实现$ε$ close近似值所需的测量重复次数，我们为每种措施提供了。我们将分析集中在最近引入的浓缩纠缠上[Beckey等。物理。莱特牧师。 127，140501（2021）]由于许多其他著名的多部分纠缠措施被恢复为该措施家族的特殊情况。我们将浓缩纠缠的定义扩展到混合状态，并展示如何在混合状态浓缩纠缠上构建下限，这些纠缠件也只能使用Bell基础测量数据来估算。最后，我们通过实际模拟其在Rydberg Atom Quantum计算机上的实现来证明我们的方法的可行性。
We show how to estimate a broad class of multipartite entanglement measures from Bell basis measurement data. In addition to lowering the experimental requirements relative to previously known methods of estimating these measures, our proposed scheme also enables a simpler analysis of the number of measurement repetitions required to achieve an $ε$-close approximation of the measures, which we provide for each. We focus our analysis on the recently introduced Concentratable Entanglements [Beckey et al. Phys. Rev. Lett. 127, 140501 (2021)] because many other well-known multipartite entanglement measures are recovered as special cases of this family of measures. We extend the definition of the Concentratable Entanglements to mixed states and show how to construct lower bounds on the mixed state Concentratable Entanglements that can also be estimated using only Bell basis measurement data. Finally, we demonstrate the feasibility of our methods by realistically simulating their implementation on a Rydberg atom quantum computer.
