一种基于Franck-Condon原理的原子在微阱间选择态转移方法
A method of state-selective transfer of atoms between microtraps based on the Franck-Condon Principle
摘要：
提出了一种利用两个微阱基态之间的拉曼跃迁实现冷原子在两个微阱之间转移的方法。拉曼过渡的中间态是第三个微陷阱的振动能级，我们确定的实验条件，其中的波函数的重叠导致一个有效的转移。在分子光谱学中有一个与弗兰克-康登原理非常相似的地方。微阱中中性原子的自旋相关操纵在量子信息处理中有重要的应用。我们还表明，从几个原子开始，正好一个原子可以转移到最终的势阱，从而给出确定性的制备单原子。
英文摘要：
We present a method of transferring a cold atom between spatially separated microtraps by means of a Raman transition between the ground motional states of the two traps. The intermediate states for the Raman transition are the vibrational levels of a third microtrap, and we determine the experimental conditions for which the overlap of the wave functions leads to an efficient transfer. There is a close analogy with the Franck-Condon principle in the spectroscopy of molecules. Spin-dependent manipulation of neutral atoms in microtraps has important applications in quantum information processing. We also show that starting with several atoms, precisely one atom can be transferred to the final potential well hence giving deterministic preparation of single atoms.
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