论文标题
对称顶部分子的直接激光冷却
Direct Laser Cooling of a Symmetric Top Molecule
论文作者
论文摘要
我们报告了对称顶部分子的直接激光冷却，从而降低了单肽钙（CAOCH $ _3 $）的横向温度至$ 1.8 \ pm0.7 $ MK，同时解决了两个不同的核旋转异构体。这些结果为有效产生超低性手性分子开辟了道路，并最终证明，通过使用适当的Rovibronic光学跃迁，复杂分子的光子循环和激光冷却都可以与更简单的线性物种一样有效。
We report direct laser cooling of a symmetric top molecule, reducing the transverse temperature of a beam of calcium monomethoxide (CaOCH$_3$) to $1.8\pm0.7$ mK while addressing two distinct nuclear spin isomers. These results open a path to efficient production of ultracold chiral molecules and conclusively demonstrate that by using proper rovibronic optical transitions, both photon cycling and laser cooling of complex molecules can be as efficient as for much simpler linear species.
