论文标题
分子的蓝色磁磁陷阱
Blue-Detuned Magneto-Optical Trap of Molecules
论文作者
论文摘要
分子的直接激光冷却已达到相位空间密度，超过了光学陷阱中的10 $^{ - 6} $，但分子数相当小。为了朝着量子退化迈进，需要一种结合子多普勒冷却和磁光诱捕（MOT）的机制，以促进超速分子从MOT到保守的光学陷阱的统一转移。使用YO分子的唯一能级结构，我们证明了分子的第一个蓝色分子MOT，该MOT均针对灰色 - 摩尔质子多普勒冷却和相对较强的捕获力进行了优化。与任何先前报道的分子MOT相比，第一个子多普勒分子MOT提供了两个数量级的增加两个数量级。
Direct laser cooling of molecules has reached a phase space density exceeding 10$^{-6}$ in optical traps, but with rather small molecular numbers. To progress towards quantum degeneracy, a mechanism is needed that combines sub-Doppler cooling and magneto-optical trapping (MOT) to facilitate near unity transfer of ultracold molecules from the MOT to a conservative optical trap. Using the unique energy level structure of YO molecules, we demonstrate the first blue-detuned MOT for molecules that is optimized for both gray-molasses sub-Doppler cooling and relatively strong trapping forces. This first sub-Doppler molecular MOT provides an increase of phase-space density by two orders of magnitude over any previously reported molecular MOT.
