A field-deployable compact gravimeter based on a grating magneto-optical trap with μGal-level long-term stability

Applied Physics Letters 2026

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Authors: Sangwon Seo, Hyun-Gue Hong, J. Lee, Sang Eon Park, Taeg Yong Kwon, Sanglok Lee, Jeongju Choi, Meungho Seo, Jongcheol Park, Sang Bum Lee
DOI: 10.1063/5.0307253
Cited by: 1
References: 54

Abstract

We present a compact quantum gravimeter based on a grating magneto-optical trap using 87Rb atoms that achieves μGal-level long-term stability without passive vibration isolation. The sensor head integrates magnetic shielding, an ion pump, optical components, and a classical seismometer within a total volume of less than 75L. The gravimeter achieves a sensitivity of 270 μGal/Hz and a stability of 5 μGal at a 1-h average with the long-term gravity record in good agreement with the theoretical tidal model. These results demonstrate a field-deployable platform for portable and chip-integrable quantum gravimetry.

Fields of Study & Subjects

Cold Atom Physics and Bose-Einstein Condensates Mechanical and Optical Resonators Atomic and Subatomic Physics Research

Publication details

Journal / source
Applied Physics Letters
Publisher
AIP Publishing
Volume
128
Issue
6
Publication date
9 February 2026
Language
EN