Fig. 1. Schematic diagram of the principle of atomic shear interferometer, tilt of detection system, and experimental setup. (a) Spatiotemporal evolution of Mach-Zehnder atom interferometer; (b) The optical path difference introduced by the inclination angle of Raman light reflector; (c) Detection system with vertical tilt angle α in the CCD; (d) Experimental setup of atom interferometer

Fig. 2. The dual-species atomic shear interference fringes. (a) Fluorescence image of atomic clouds; (b) Fitting pattern of fringes

Fig. 3. The measured tilt angle of the goniometer using a plumb line changing with the set angle

Fig. 4. Schematic diagram of single-species atomic shear interference fringes (a) and variation of the interference fringe phase with ∆y' (b)

Fig. 5. (a) Relationship between differential phase shift and tilt angle α using simultaneous dual-internal-state detection 87Rb single-species atomic interferometric phase shift method, where the phase corresponding to the green line is π; (b) Relationship between dual-species atom interferometric differential phase shift and tilt angle α using the alternative detection atomic interferometric phase shift method (The red and black lines represent the phase shift before and after alternating detection, respectively, and the blue line represents the averaged phase)