论文标题
超速旋转混合物中单线配对过程的激光控制
Laser Control of Singlet-Pairing Process in an Ultracold Spinor Mixture
论文作者
论文摘要
在两种不同物种A和B的Ultrocold Spin-1原子的混合物中（例如$^{23} $ na（a）和$^{87} $ rb（b）），间接间的单点式过程$ {\ rm a} a} _ { - 1}+{\ rm b} _ {+1} $，可以由旋转依赖性的原子间相互作用诱导，其中下标$ \ pm 1 $表示磁性量子数。然而，一个人无法通过调整偏置真实磁场来与其他自旋变化过程分离。结果，到目前为止，在实验中尚未清楚地观察到单线配对过程，并且相应相互作用强度的测量变得困难。在这项工作中，我们建议通过结合实际磁场和激光诱导的物种依赖性合成磁场来控制单线配对过程。通过我们的方法，人们可以显着增强这一过程，并同时使用所有其他改变旋转的过程。我们说明了我们的限制性两种原子系统和纺纱剂玻璃晶凝结物的二元混合物的方法。我们的控制方案有助于精确测量弱单线配对强度和两个不同原子的纠缠产生。
In the mixture of ultracold spin-1 atoms of two different species A and B (e.g., $^{23}$Na (A) and $^{87}$Rb (B)), inter-species singlet-pairing process ${\rm A}_{+1}+{\rm B}_{-1}\rightleftharpoons {\rm A}_{-1}+{\rm B}_{+1}$, can be induced by the spin-dependent inter-atomic interaction, where subscript $\pm 1$ denotes the magnetic quantum number. Nevertheless, one cannot isolate this process from other spin-changing processes by tuning the bias real magnetic field. As a result, so far the singlet-pairing process have not been clearly observed in the experiments, and the measurement of the corresponding interaction strength becomes difficult. In this work we propose to control the singlet-pairing process via combining the real magnetic field and a laser-induced species-dependent synthetic magnetic field. With our approach one can significantly enhance this process and simultaneously supperess all other spin-changing processes. We illustrate our approach for both a confined two-atom system and a binary mixture of spinor Bose-Einstein condensates. Our control scheme is helpful for the precise measurement of the weakly singlet-pairing interaction strength and the entanglement generation of two different atoms.
