Cold and Continuous Atom Interferometer for Inertial Sensing

We present new measurements of a continuous atomic interferometer designed for inertial sensing. The interferometer is derived from an atom source which emits a continuous beam of sub-Doppler cooled atoms while simultaneously mitigating near-resonant scattered light. Enabled by the unique properties of the atom source, the derived interferometer demonstrates continuous measurement exhibiting high contrast and low noise. We describe unique and useful features of our apparatus, such as continuous phase shear readout, and rapid switching of intertial sensitivity, much faster than the characteristic time-scale of a typical matter-wave interferometer. Our work here inspires future cold-atom architectures which can measure with both high sensitivity and high bandwidth.