Double-atomic-group synchronous cooling and trapping system using single light beam

The invention relates to a double-atomic-group synchronous cooling and trapping system using a single light beam. The double-atomic-group synchronous cooling and trapping system comprises a cooling light emitting assembly, a vacuum cavity and an atom cooling and trapping assembly. The cooling light emitting assembly can emit incident cooling light, the atom cooling and trapping assembly comprises two laser intersection generating units, a laser retroreflection unit and two gradient magnetic field generating units, and the two laser intersection generating units are arranged in the vacuum cavity at intervals and distributed in a staggered mode. The laser retro-reflection unit is arranged at the first end of the vacuum cavity and can enable the outer side parts of the incident cooling light to be vertically intersected, the laser retro-reflection unit is arranged at the second end of the vacuum cavity and can enable the middle part of the incident cooling light to be reversely reflected, and the two gradient ma