Efficient loading of a single neutral atom into an optical microscopic tweezer*
He Jun†, Liu Bei, Diao Wen-Ting, Wang Jie-Ying, Jin Gang, Wang Jun-Min‡
       
Plots of typical loading probability of tweezer versus the trap depth. (a) The red solid square denotes the ~ 300 Gs/cm magnetic field gradient for our MOT, and the blue empty circle represents the ~ 130 Gs/cm magnetic field gradient. At a low trap depth, the restoring force dominates the loading probability of trap. (b) With the increasing trap depth, the loading probability first increases and then decreases in our experiment. The decrease behavior is due to the noise heating of the tweezer beam. The error bar denotes the statistic error.