This data was generated during simulations and numerical calculations for the paper titled "Measurement of Many-Body Quantum Correlations in Superconducting Circuits." The data was generated using publicly known quantum physics, and well known numerical methods. Filenames include names of figures used in the manuscript.

We propose a probe circuit capable of reading out many-body correlations in an analog quantum simulator. Our measurement scheme, designed for many-photon states, exploits the non-linearity of the Josephson junction to measure two-point (and potentially higher-order) correlation functions of the superconducting phase operator. We demonstrate the capabilities of this design in the context of an LC-ladder with a quantum impurity. The proposed probe allows for the measurement of inherently quantum correlations, such as squeezing, and has the potential to significantly expand the scope of analog quantum simulations using superconducting circuits.

我们提出了一种可在类比量子模拟器（analog quantum simulator）中读取多体关联的探测电路。本测量方案专为多光子态设计，利用约瑟夫森结（Josephson junction）的非线性特性，对超导相位算符的两点（及潜在高阶）关联函数开展测量。我们在含量子杂质的LC梯形电路场景中验证了该设计的性能，所提出的探测电路可实现压缩等本征量子关联的测量，且有望大幅拓展基于超导电路的类比量子模拟的应用范围。