期刊
PHYSICAL REVIEW LETTERS
卷 117, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.203003
关键词
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资金
- German Space Agency (DLR)
- Federal Ministry for Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag [DLR 50WM1552-1557]
- Centre for Quantum Engineering and Space-Time Research (QUEST)
- Texas A&M University for a Texas A& M University Institute
- Center for Integrated Quantum Science and Technology (IQST)
- Friedrich-Alexander-Universitat Erlangen-Nurnberg
We demonstrate a quantum gravimeter by combining the advantages of an atom chip for the generation, delta-kick collimation, and coherent manipulation of freely falling Bose-Einstein condensates (BECs) with an innovative launch mechanism based on Bloch oscillations and double Bragg diffraction. Our high-contrast BEC interferometer realizes tens of milliseconds of free fall in a volume as little as a one centimeter cube and paves the way for measurements with sub-mu Gal accuracies in miniaturized, robust devices.
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