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Tilt adjustment for a portable absolute atomic gravimeter |
| Hong-Tai Xie(谢宏泰)1,2,3, Bin Chen(陈斌)1,2,3, Jin-Bao Long(龙金宝)1,2,3, Chun Xue(薛春)4, Luo-Kan Chen(陈泺侃)1,2,3, Shuai Chen(陈帅)1,2,3 |
1 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
2 Shanghai Branch, CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China;
3 Shanghai Research Center for Quantum Sciences, Shanghai 201315, China;
4 Shanghai Division, QuantumCTek Co., Ltd. Shanghai 201315, China |
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Abstract For an atomic gravimeter, the measured value of the Earth's gravity acceleration g is the projection of the local gravity on the direction of Raman laser beams. To accurately measure the g, the Raman laser beams should be parallel to the g direction. We analyze the tilt effect of the Raman beams on g measurement and present a general method for the tilt adjustment. The systematic error caused by the tilt angle is evaluated as 0 (+0, -0.8) μGal (1 μGal=10 nm/s2) and the drift is also compensated in real time. Our method is especially suitable for the portable atomic gravimeter which focuses on the mobility and field applications.
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Received: 19 February 2020
Revised: 30 April 2020
Accepted manuscript online:
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PACS:
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37.25.+k
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(Atom interferometry techniques)
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03.75.Dg
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(Atom and neutron interferometry)
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06.20.-f
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(Metrology)
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| Fund: Project supported by the National Key R&D Program of China (Grant No. 2016YFA0301601), the National Natural Science Foundation of China (Grant No. 11674301), Anhui Initiative in Quantum Information Technologies, China (Grant No. AHY120000), and Shanghai Municipal Science and Technology Major Project, China (Grant No. 2019SHZDZX01). |
Corresponding Authors:
Shuai Chen
E-mail: shuai@ustc.edu.cn
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Cite this article:
Hong-Tai Xie(谢宏泰), Bin Chen(陈斌), Jin-Bao Long(龙金宝), Chun Xue(薛春), Luo-Kan Chen(陈泺侃), Shuai Chen(陈帅) Tilt adjustment for a portable absolute atomic gravimeter 2020 Chin. Phys. B 29 073701
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