New concepts of inertial measurements with multi-species atom interferometry

TL;DR

This paper introduces innovative multi-species atom interferometry configurations that enhance measurement range and sensitivity for inertial sensors, with experimental validation using dual rubidium isotopes.

Contribution

It proposes new configurations for multi-species atom interferometry to improve inertial sensor performance, demonstrated through initial experiments with dual rubidium isotopes.

Findings

Successful implementation of dual-species atom accelerometer

Demonstration of interferometers with different interrogation times

Initial results in phase quadrature configuration

Abstract

In the field of cold atom inertial sensors, we present and analyze innovative configurations for improving their measurement range and sensitivity, especially attracting for onboard applications. These configurations rely on multi-species atom interferometry, involving the simultaneous manipulation of different atomic species in a unique instrument to deduce inertial measurements. Using a dual-species atom accelerometer manipulating simultaneously both isotopes of rubidium, we report a preliminary experimental realization of original concepts involving the implementation of two atom interferometers first with different interrogation times and secondly in phase quadrature. These results open the door to a new generation of atomic sensors relying on high performance multi-species atom interferometric measurements.