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<p>This paper presents the first experimental observation and investigation of a lineshape-asymmetry-caused shift (LACS) in a short-baseline atomic interferometer–gravimeter. It is shown that this shift scales inversely with the cube of the free evolution time, <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\( \propto {\kern 1pt} {{T}^{{ - 3}}}\)</EquationSource> <!--JETPLet2660045Kapusta-m1--> </InlineEquation>, and can lead to a noticeable systematic error in the measured value of the gravitational acceleration <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(g\)</EquationSource> <!--JETPLet2660045Kapusta-m2--> </InlineEquation> at the level of 0.1–1 mGal (<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(T \approx \)</EquationSource> <!--JETPLet2660045Kapusta-m3--> </InlineEquation> milliseconds). The obtained results are in good agreement with our previous theoretical studies and highlight the importance of accounting for LACS in high-precision absolute measurements of <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(g\)</EquationSource> <!--JETPLet2660045Kapusta-m4--> </InlineEquation> in compact atomic gravimeters.</p>

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T –3-Shift in a Short-Baseline Atomic Interferometer–Gravimeter

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月1日

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  • D. N. Kapusta,
  • A. E. Bonert,
  • A. N. Goncharov,
  • V. I. Yudin,
  • K. N. Adamov,
  • A. V. Taichenachev,
  • M. Yu. Basalaev,
  • M. D. Radchenko,
  • O. N. Prudnikov

摘要

This paper presents the first experimental observation and investigation of a lineshape-asymmetry-caused shift (LACS) in a short-baseline atomic interferometer–gravimeter. It is shown that this shift scales inversely with the cube of the free evolution time, \( \propto {\kern 1pt} {{T}^{{ - 3}}}\) , and can lead to a noticeable systematic error in the measured value of the gravitational acceleration \(g\) at the level of 0.1–1 mGal ( \(T \approx \) milliseconds). The obtained results are in good agreement with our previous theoretical studies and highlight the importance of accounting for LACS in high-precision absolute measurements of \(g\) in compact atomic gravimeters.