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Special Issue:
SPECIAL TOPIC — Ultracold atom and its application in precision measurement
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| SPECIAL TOPIC—Ultracold atom and its application in precision measurement |
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Calibration of a compact 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 Compact atomic gravimeters are the potential next generation precision instruments for gravity survey from fundamental research to broad field applications. We report the calibration results of our home build compact absolute atomic gravimeter USTC-AG02 at Changping Campus, the National Institute of Metrology (NIM), China in January 2019. The sensitivity of the atomic gravimeter reaches 35.5 μGal/√Hz (1 μGal=1×10-8 m/s2) and its long-term stability reaches 0.8 μGal for averaging over 4000 seconds. Considering the statistical uncertainty, the dominant instrumental systematic errors and environmental effects are evaluated and corrected within a total uncertainty (2σ) of 15.3 μGal. After compared with the reference g value given by the corner cube gravimeter NIM-3A, the atomic gravimeter USTC-AG02 reaches the degree of equivalence of 3.7 μGal.
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Received: 30 May 2020
Revised: 28 June 2020
Accepted manuscript online: 20 August 2020
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PACS:
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37.25.+k
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(Atom interferometry techniques)
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06.20.-f
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(Metrology)
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04.80.Nn
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(Gravitational wave detectors and experiments)
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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) Calibration of a compact absolute atomic gravimeter 2020 Chin. Phys. B 29 093701
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