Abstract

Gravimetry with low uncertainty and long-term stability opens up new fields of research in geodesy, especially in hydrology and volcanology. The main limitations in the accuracy of current generation cold atom gravimeters stem from the expansion rate and the residual centre-of-mass motion of their atomic test masses. Our transportable quantum gravimeter QG-1 aims at overcoming these limitations by performing atom interferometry with delta-kick collimated Bose–Einstein condensates generated by an atom chip. With our approach we anticipate to measure the local gravitational acceleration at geodetic campaigns with an uncertainty less than 1 nm/s² surpassing the state-of-the-art classic and quantum based systems. In this paper, we discuss the design and performance assessment of QG-1.

Graphical abstract

中文翻译：

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可移动的量子重力计，采用三角踢准直的玻色-爱因斯坦凝聚物

摘要

具有低不确定性和长期稳定性的重力测量技术开辟了大地测量学的新领域，尤其是水文学和火山学。当前一代冷原子重力仪精度的主要局限性在于其原子测试质量的膨胀率和残余质心运动。我们的可运输量子重力仪QG-1旨在通过对由原子芯片产生的准直角准直的玻色-爱因斯坦凝聚物进行原子干涉来克服这些限制。通过我们的方法，我们有望测量大地运动中的局部重力加速度，其不确定性小于1 nm / s ^2，超过了最先进的经典和基于量子的系统。在本文中，我们讨论了QG-1的设计和性能评估。

图形概要