论文标题
$ \ ell $ -Type Parity Doublet状态中多原子分子的光学捕获
Optical Trapping of a Polyatomic Molecule in an $\ell$-Type Parity Doublet State
论文作者
论文摘要
我们报告了多原子分子钙单羟化（CAOH）的光学诱捕。来自磁光陷阱的CAOH分子是在自由空间中的$ 20（3）〜μ \ text {k} $冷却至$ 20（3）〜μ \ text {k} $，并加载到光学偶极子陷阱中。我们在$ 57（8）〜μ $ k的温度下，达到了陷阱分子的密度$ 3（1）\ times 10^9〜 \ text {cm}^{ - 3} $。将捕获的CAOH分子光学地泵入激发的振动弯曲模式，其$ \ ell $ type平等双重结构是针对多原子分子的广泛拟议量子科学应用的潜在资源。我们测量此弯曲模式状态的自发辐射寿命为$ \ sim $$ 0.7〜 \ text {s} $。
We report optical trapping of a polyatomic molecule, calcium monohydroxide (CaOH). CaOH molecules from a magneto-optical trap are sub-Doppler laser cooled to $20(3)~μ\text{K}$ in free space and loaded into an optical dipole trap. We attain an in-trap molecule number density of $3(1) \times 10^9~\text{cm}^{-3}$ at a temperature of $57(8)~μ$K. Trapped CaOH molecules are optically pumped into an excited vibrational bending mode, whose $\ell$-type parity doublet structure is a potential resource for a wide range of proposed quantum science applications with polyatomic molecules. We measure the spontaneous, radiative lifetime of this bending mode state to be $\sim$$0.7~\text{s}$.
