中国物理B ›› 2020, Vol. 29 ›› Issue (9): 93701-093701.doi: 10.1088/1674-1056/aba27b

所属专题: 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), Bin Chen(陈斌), Jin-Bao Long(龙金宝), Chun Xue(薛春), Luo-Kan Chen(陈泺侃), Shuai Chen(陈帅)   

  1. 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
  • 收稿日期:2020-05-30 修回日期:2020-06-28 接受日期:2020-08-20 出版日期:2020-09-05 发布日期:2020-09-05
  • 通讯作者: Shuai Chen E-mail:shuai@ustc.edu.cn
  • 基金资助:
    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).

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. 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
  • Received:2020-05-30 Revised:2020-06-28 Accepted:2020-08-20 Online:2020-09-05 Published:2020-09-05
  • Contact: Shuai Chen E-mail:shuai@ustc.edu.cn
  • Supported by:
    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).

摘要: 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.

关键词: atom interferometry, absolute gravimeter, systematic errors

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.

Key words: atom interferometry, absolute gravimeter, systematic errors

中图分类号:  (Atom interferometry techniques)

  • 37.25.+k
06.20.-f (Metrology) 04.80.Nn (Gravitational wave detectors and experiments)