经过北京大学王义道、杨乐海等教授的艰苦努力，中国激光冷却与国禁原子研究获重大突破．他们在国内首次实现了磁光防，得到了绝冷原子，性能达到国际水平，并观察到了一些冷原子团的特异现象；在国内首次实现了原子的光学粘团，获得了销的超冷原子团，并用飞行时间法测得自由 After the arduous efforts of professors such as Wang Yidao and Yang Lehai of Peking University, major breakthroughs have been made in the research on laser cooling and atomic ban in China. For the first time in China, they achieved magneto-optic defense, obtained absolutely cool atoms, achieved the international performance and observed some specific phenomena of cold atomic clusters. For the first time in China, they achieved the optical sticking of atoms and obtained the ultra-cold atomic clusters of pins. And measured by flight time method free