论文标题
超低远程多原子分子的光相关
Photoassociation of ultracold long-range polyatomic molecules
论文作者
论文摘要
我们探讨了从其地面电子状态中从与外部磁场对齐的极性分子对的地面电子状态中光学形成远距离四个分子和较大的多原子分子的可行性。根据相互作用的双原子分子的相对取向，我们发现可以在非常扩展的光环状态下形成四个词素作为弱结合的复合物，也可以作为由半偏分子或几乎二下的diotomic分子组成的纯长距离分子。后者是一种新型的四型分子类型，该分子由长长分子间范围内的两个双原子分子组成，并预测在冷和超低状态下是稳定的。我们的数值研究是针对Ultracold KRB和RBC进行的，导致（KRB）$ _ 2 $和（RBCS）$ _ 2 $复合物的生产。基于极性分子之间的长距离相互作用的通用性能，我们鉴定了三极和四倍矩的有利比率的三翼和四个线性极性分子，可以将其推广到形成多原子分子。
We explore the feasibility of optically forming long-range tetratomic and larger polyatomic molecules in their ground electronic state from ultracold pairs of polar molecules aligned by external fields. Depending on the relative orientation of the interacting diatomic molecules, we find that a tetratomic can be formed either as a weakly bound complex in a very extended halo state or as a pure long-range molecule composed of collinear or nearly-collinear diatomic molecules. The latter is a novel type of tetratomic molecule comprised of two diatomic molecules bound at long intermolecular range and predicted to be stable in cold and ultracold regimes. Our numerical studies were conducted for ultracold KRb and RbCs, resulting in production of (KRb)$_2$ and (RbCs)$_2$ complexes, respectively. Based on universal properties of long-range interactions between polar molecules, we identify triatomic and tetratomic linear polar molecules with favorable ratio of dipole and quadrupole moments for which the apporach could be generalized to form polyatomic molecules.
