Large-angle coherent atomic beam splitter via the bichromatic force

This dataset supports all findings in the manuscript entitled "Large-angle coherent atomic beam splitter via the bichromatic force". It contains raw data that underpin the theoretical demonstration of bichromatic-force-mediated coherent beam splitting of metastable helium atoms. The dataset is organized into five main components, each corresponding to a key figure in the paper: dressed state: Eigenenergies of the atom-field coupled system for standing-wave phase differences φ = 0, π/2, 2π/3, and 3π/4. The data in the first column represents different spatial positions for different phase differences. individual trajectories: Time-dependent transverse velocity trajectories of individual metastable helium atoms under various conditions (different initial positions, phase differences, and interaction times). For velocity trajectories, each .txt file represents a separate individual trajectory. Monte Carlo 3D: Evolution of the transverse velocity distribution of an atomic ensemble (10⁵ atoms) over time (up to 300 ns). The different columns in the data represent the velocity distribution of atoms at different evolution times. Monte Carlo 2D: 2D spatial distributions (z-y plane) of the atomic beam before and after splitting, followed by 5 ms of free flight, for different initial transverse velocity spreads (FWHM = 0.2, 1, 2 m/s). Each .txt file contains transverse position information for all particles. Monte Carlo different detuning: Splitting angle and splitting efficiency as functions of laser detuning (δ) for three different optical pulse durations (120, 180, 240 ns). Each .txt file contains transverse velocity information for all particles.