期刊
EUROPEAN PHYSICAL JOURNAL D
卷 74, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1140/epjd/e2020-10120-x
关键词
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资金
- Projekt DEAL
- Deutsche Forschungsgemeinschaft (DFG, German reaserch foundation) [SFB 1128 geo-Q, EXC 2123 QuantumFrontiers - 390837967]
- Niedersachsisches Vorab through Forderung von Wissenschaft und Technik in Forschung und Lehre
- German Space Agency (DLR)
- Federal Ministry of Economic Affairs and Energy (BMWi) [DLR 50RK1957]
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/s(2) surpassing the state-of-the-art classic and quantum based systems. In this paper, we discuss the design and performance assessment of QG-1.
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