【摘要】 四极Ioffe组合磁阱(QUIC磁阱)是由一对四极线圈和一个Ioffe线圈组合构成的一种Ioffe-Pritchard磁阱,它已广泛应用在囚禁中性原子和实现蒸发冷却原子的实验中.设计了两种不同结构的四极线圈和Ioffe线圈,并对其进行了相应的数值模拟和测试.通过比较获得了一种参数优化的QUIC磁阱,这为QUIC磁阱线圈的优化设计提供了参考.最后在优化的QUIC磁阱中,采用射频蒸发冷却俘获87Rb原子,实现了87Rb原子气体的玻色-爱因斯坦凝聚,同时采用"共同冷却"(sympathetic cooling)技术使费米气体40K达到量子简并.更多还原

【Abstract】 The quadrapole-Ioffe configuration(QUIC) trap consists of two identical quadrupole coils and one Ioffe coil,which has been applied widely to trap neutral atoms for evaporation cooling.We have designed two different structures of the QUIC trap.By the numerical calculation and experimental test,we obtained the optimized structure.In the QUIC trap,the magnetically trapped rubidium-87 atoms are cooled evaporatively to below the phase transition of Bose-Einstein condensation,at the same time,the potassium-40 atoms are cooled sympathetically to the Fermi degeneracy.更多还原