论文标题
从混合凹陷陷阱到壳陷阱加载量子气
Loading a quantum gas from a hybrid dimple trap to a shell trap
论文作者
论文摘要
从混合陷阱中的退化bose气体开始，该杂交陷阱结合了磁性四极陷阱和由聚焦激光束引起的有吸引力的光学陷阱，我们证明了该量子气的有效加载到壳形陷阱中。壳陷阱纯粹是磁性的，并依赖于穿着射频（RF）磁场的不均匀磁场中原子的绝热电势。我们表明，混合陷阱中的直接RF蒸发可以使冷样品有效，简单制备，非常适合随后的加载过程。进入壳陷阱的转移是绝热的，并将质量运动的最终激发限制为低于2微米。
Starting from a degenerate Bose gas in a hybrid trap combining a magnetic quadrupole trap and an attractive optical trap resulting from a focused laser beam, we demonstrate the efficient loading of this quantum gas into a shell-shaped trap. The shell trap is purely magnetic and relies on adiabatic potentials for atoms in an inhomogeneous magnetic field dressed by a radiofrequency (rf) field. We show that direct rf evaporation in the hybrid trap enables an efficient and simple preparation of the cold sample, well adapted to the subsequent loading procedure. The transfer into the shell trap is adiabatic and limits the final excitation of the center-of-mass motion to below 2 micrometres.
