Gravity measurements below 10-<SUP>9</SUP> g with a transportable absolute quantum gravimeter

International audienceThis paper presents the Absolute Quantum Gravimeter (AQG), atransportable gravity sensor based on light-pulse atom interferometrywith laser-cooled &lt;SUP&gt;87&lt;/SUP&gt;Rb atoms. Several units have beenintegrated so far and we present the detailed analysis of theirperformances. We report on a stability of the measurements of g at alevel below 10-&lt;SUP&gt;9&lt;/SUP&gt; g in various types of environment and on thecapability to sustain month-long drift-free continuous acquisitions. TheAQG is an industry-grade gravity sensor which meets the objective toprovide a device based on atom interferometry with laser-cooled atoms asa mobile and automated turn-key device. It is leaving the laboratory forgeophysical studies in hydrology, geodesy and volcanology. This paperwill also be the occasion to describe in more details the high degree ofmaturity of several key enabling technologies such as intelligentintegrated laser systems that can help Quantum Technologies with coldatoms in Quantum Computing, Quantum Simulation and QuantumCommunication