A compact differential gravimeter at the quantum projection noise limit [article]

Camille Janvier, Vincent Ménoret, Sébastien Merlet, Arnaud Landragin, Franck Pereira Dos Santos, Bruno Desruelle
2022 arXiv   pre-print
Atom interferometry offers new perspectives for geophysics and inertial sensing. We present the industrial prototype of a new type of quantum-based instrument: a compact, transportable, differential quantum gravimeter capable of measuring simultaneously the absolute values of both gravitational acceleration, g, and its vertical gradient, Γ_zz. While the sensitivity to g is competitive with the best industrial gravimeters, the sensitivity on Γ_zz reaches the limit set by quantum projection
more » ... leading to an unprecedented long-term stability of 0.1 E (1E=1× 10^-9s^-2). This unique, dual-purpose instrument, paves the way for new applications in geophysics, civil engineering, and gravity-aided navigation, where accurate mapping of the gravitational field plays an important role.
arXiv:2201.03345v1 fatcat:pp6crlgmufbnjbgvrwsk4c23be