We demonstrate a method to determine the position of single atoms in a three-dimensional optical lattice. Atoms are sparsely loaded from a far-off-resonant optical tweezer into a few vertical planes of a cubic optical lattice positioned near a high-resolution microscope objective. In a single realization of the experiment, we pin the atoms in deep lattices and then acquire multiple fluorescence images with single-site resolution. The objective is translated between images, bringing different lattice planes of the lattice into focus. The applicability of our method is assessed using simulated fluorescence images, where the atomic filling fraction in the lattice is varied. This opens up the possibility of extending the domain of quantum simulation using quantum gas microscopes from two to three dimensions.

中文翻译：

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量子气体显微镜中单个原子的空间层析成像

我们演示了确定三维光学晶格中单个原子位置的方法。将原子稀疏地从远共振光学镊子加载到位于高分辨率显微镜物镜附近的立方光学晶格的几个垂直平面中。在实验的单个实现中，我们将原子固定在深格子中，然后以单点分辨率获取多个荧光图像。物镜在图像之间转换，使晶格的不同晶格平面成为焦点。我们的方法的适用性是通过模拟荧光图像来评估的，其中，晶格中的原子填充分数发生了变化。这为将使用量子气体显微镜的量子模拟领域从二维扩展到三维提供了可能性。