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arXiv · 2603.21202

$T^{-3}$-shift in a short-baseline atomic interferometer-gravimeter

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
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Abstract

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, $\propto T^{-3}$, 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.

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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. 2026-03-22. $T^{-3}$-shift in a short-baseline atomic interferometer-gravimeter. https://doi.org/10.1134/s002136402660045x

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