Dual-species atomic interferometric sensor for simultaneous inertial measurement and clock operation

The atomic interferometer, serving as a precise measurement tool for multiple physical quantities, holds the potential to establish a fully quantum autonomous “position, navigation, and timing (PNT)” unit. This paper introduces a method for simultaneous inertial measurement and clock operation based on atom interferometry with dual-isotope atomic beams. The corresponding related experimental progress is also reported. A 87 Rb Raman-Mach-Zehnder interferometer is presented with a fringe contrast of C = 0.05, providing a foundational sample for further experiments.