Quantum gas microscopy has emerged as a powerful new way to probe quantum many-body systems at the microscopic level. However, layered or efficient spin-resolved readout methods have remained scarce as they impose strong demands on the specific atomic species and constrain the simulated lattice geometry and size. Here we present a novel high-fidelity bilayer readout, which can be used for full spin- and density-resolved quantum gas microscopy of two-dimensional systems with arbitrary geometry. Our technique makes use of an initial Stern-Gerlach splitting into adjacent layers of a highly stable vertical superlattice and subsequent charge pumping to separate the layers by $21\mu \mathrm{m}$. This separation enables independent high-resolution images of each layer. We benchmark our method by spin- and density-resolving two-dimensional Fermi-Hubbard systems. Our technique furthermore enables the access to advanced entropy engineering schemes, spectroscopic methods, or the realization of tunable bilayer systems.

中文翻译：

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用于自旋和密度分辨量子气体显微镜的稳健双层电荷泵浦。

量子气体显微镜已经成为一种在微观水平上探测量子多体系统的强大新方法。但是，分层或有效的自旋分辨读出方法仍然很稀少，因为它们对特定的原子种类有强烈的要求，并限制了模拟晶格的几何形状和大小。在这里，我们介绍了一种新颖的高保真双层读数，可以将其用于具有任意几何形状的二维系统的全自旋和密度分辨量子气体显微镜。我们的技术利用初始Stern-Gerlach分裂成高度稳定的垂直超晶格的相邻层，然后进行电荷泵抽运以通过$21\mu \mathrm{米}$。这种分离使得每一层都可以获得独立的高分辨率图像。我们通过自旋和密度解析二维费米-哈伯德系统对我们的方法进行基准测试。我们的技术还使得能够访问高级熵工程方案，光谱方法或可调谐双层系统的实现。