单腔原子芯片系统中高效率的四极磁阱转移  

High Efficiency Quadrupole Magnetic Trap Transport in Single Chamber Atom Chip System

作　　者：程俊[1,2] 许忻平[1] 张敬芳[1] 陈钰水 张海潮[1] 王育竹[1] 

机构地区：[1]中国科学院上海光学精密机械研究所量子光学重点实验室,上海201800 [2]中国科学院大学,北京100049

出　　处：《光学学报》2016年第12期9-15,共7页Acta Optica Sinica

基　　金：国家自然科学基金青年科学基金(11604348)

摘　　要：利用两对部分重叠的磁光阱(MOT)和转移线圈产生的可移动四极磁阱(QMT)实现了87Rb冷原子从MOT中心向原子芯片的高效率输运。采取了线性增加转移线圈电流、同时保持MOT线圈电流不变的QMT移动方式,磁阱的移动速度构型为类Blackman型。利用该QMT输运方案,冷原子从MOT中心转移到原子芯片表面,转移过程中冷原子温度升高约30μK,原子转移效率高于90%。该系统可以为原子芯片干涉仪提供合适的冷原子源,也可以用来研究原子与芯片表面的相互作用。With a movable quadrupole magnetic trap（QMT）generated by two pairs of partly-overlapped magnetooptical trap（MOT）and transfer coils,a highly efficient transport of cold 87 Rb atoms to the atom chip surface is realized.By the QMT movable means of linearly increasing the current in the transfer coils but simultaneously keeping the current in the MOT coils constant,the velocity profile of the moving trap is Blackman-type-like.With this QMT movable scheme,the cold atoms are transferred to the atom chip surface from the MOT center.In the transfer process,the cold atom temperature is increased by about 30μK,and the transfer efficiency is above 90%.This system provides an appropriate cold atoms source for the atom chip interferometer and also can be used to investigate the interaction between atom and chip surface.

关 键 词：原子与分子物理学 原子芯片 磁阱输运 三维打印 单腔系统 

分 类 号：O431.2[机械工程—光学工程]