Quantum sensing for gravity cartography.

ABSTRACT: The sensing of gravity has emerged as a tool in geophysics applications such as engineering and climate research^1-3, including the monitoring of temporal variations in aquifers⁴ and geodesy⁵. However, it is impractical to use gravity cartography to resolve metre-scale underground features because of the long measurement times needed for the removal of vibrational noise⁶. Here we overcome this limitation by realizing a practical quantum gravity gradient sensor. Our design suppresses the effects of micro-seismic and laser noise, thermal and magnetic field variations, and instrument tilt. The instrument achieves a statistical uncertainty of 20 E (1 E = 10^-9 s^-2) and is used to perform a 0.5-metre-spatial-resolution survey acros

SUBMITTER: Stray B 

PROVIDER: S-EPMC8866129 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature