Atom interferometry has become one of the most powerful technologies for precision measurements. To develop simple, precise, and versatile atom interferometers for inertial sensing, we demonstrate an atom interferometer measuring acceleration, rotation, and inclination by pointing Raman beams toward individual faces of a pyramidal mirror. Only a single-diode laser is used for all functions, including atom trapping, interferometry, and detection. Efficient Doppler-sensitive Raman transitions are achieved without velocity selecting the atom sample, and with zero differential AC Stark shift between the cesium hyperfine ground states, increasing signal-to-noise and suppressing systematic effects. We measure gravity along two axes (vertical and 45° to the vertical), rotation, and inclination with sensitivities of $6\mathrm{\mu m}/{\mathrm{s}}^2/\sqrt{\mathrm{Hz}}$, $300\mathrm{\mu rad}/\mathrm{s}/\sqrt{\mathrm{Hz}}$, and $4\mathrm{\mu rad}/\sqrt{\mathrm{Hz}}$, respectively. This work paves the way toward deployable multiaxis atom interferometers for geodesy, geology, or inertial navigation.

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单轴激光和金字塔形磁光阱的多轴原子干涉仪

原子干涉测量法已经成为用于精确测量的最强大的技术之一。为了开发用于惯性传感的简单，精确和通用的原子干涉仪，我们演示了通过将拉曼光束指向金字塔反射镜的各个面来测量加速度，旋转和倾斜度的原子干涉仪。仅单二极管激光器可用于所有功能，包括原子俘获，干涉测量和检测。无需选择原子样本的速度即可实现高效的多普勒敏感拉曼跃迁，并且铯超细基态之间的AC Stark偏移为零，从而增加了信噪比并抑制了系统效应。我们沿着两个轴（垂直和垂直45度）测量重力，旋转和倾斜度，灵敏度为$6\mathrm{微米}/{\mathrm{s}}^{\mathrm{2个}}/\sqrt{\mathrm{赫兹}}$， $300\mathrm{拉德}/\mathrm{s}/\sqrt{\mathrm{赫兹}}$， 和 $4\mathrm{拉德}/\sqrt{\mathrm{赫兹}}$， 分别。这项工作为大地测量，地质学或惯性导航的可部署多轴原子干涉仪铺平了道路。