Characterization of Noise and Performance of a Dual-beam Atom Interferometer

We present new measurements of a continuous, dual-beam atom interferometer designed for inertial sensing. Each atom beam is derived from an atom source which emits a continuous beam of sub-Doppler cooled atoms while simultaneously mitigating near-resonant scattered light. We will describe the unique noise characteristics of this dual-beam interferometer as well as design choices informed by prior iterations of the experiment. We discuss and characterize noise in the system, as well as the transfer of that noise to quantities of interest in the detection and measurement of phase noise in the interferometer. Our work here inspires future cold-beam architectures including a more compact and robust sensor for maritime use.