#形载流导线外加偏磁场可控原子磁囚禁

Controllable atom traps by #-shaped current-carrying wires with bias magnetic field

提出了一种新型的采用#形载流导线外加偏磁场作用来实现中性冷原子磁囚禁的方案.通过对空间磁场的计算,发现改变外加偏磁场的大小与方向,可将磁阱由一个分裂为两个或四个,反之亦然.文中采用经典Monte-Carlo方法,模拟了冷原子团分裂的动力学过程,验证了本方案的可行性,为进一步研究双样品或四样品磁光囚禁(MOT)和中性冷原子的碰撞实验提供了理论依据.

A novel cold neutral atom magnetic trap scheme using #-shaped current-carrying conductor with bias magnetic field is proposed. By the calculation of spatial magnetic field, it is found that with change of size and direction of bias magnetic field, the magnetic trap can be divided into two or four, and vice versa. By using the classical Monte-Carlo method, the splitting dynamics process is simulated, and this scheme is validated by the simulation results. The proposed scheme not only can be applied to the double samples or four samples Magneto-Optic Trap （MOT）, but also provides theory basis to study the cold neutral atomic collisions experiment.