Dual-isotope atomic beam interferometry

Atom interferometry with multiple species enable fundamental physics measurement such as test of the weak equivalence principle and practical application such as enhancement in dynamic range for inertial sensing. We describe a dual-isotope interferometer based on continuously laser-cooled atomic beam comprising of naturally occurring isotopes of rubidium. Such an interferometer can enable new practical capabilities such as simultaneous and co-located interferometers for multi-axis, multi-modal, or multi-scale-factor sensing. We give an overview of our experimental setup and present results from our preliminary work on inertially sensitive measurements with the dual-isotope beam.