激子诱导超冷气体中无约束原子的定向运动
Exciton induced directed motion of unconstrained atoms in an ultracold gas
摘要：
我们证明，通过局域化的里德伯激发在三维冷原子云原子运动可以呈现定向和几乎局限于一个平面，没有空间约束的单个原子的运动。这使得在自然条件下通过偶极-偶极相互作用加速的原子中的非绝热电子里德伯动力学的产生和观察成为可能。利用全$l=0,1$ $m=0,\pm1$角动量态空间，我们的模拟表明，无论是原子位置信息还是里德堡系统的激发态谱，圆锥交叉都是明显的.因此，灵活的里德伯聚集体表明自己在实验中探测量子化学效应的长度尺度大大膨胀相比，一个标准的分子的情况。
英文摘要：
We demonstrate that through localised Rydberg excitation in a three-dimensional cold atom cloud atomic motion can be rendered directed and nearly confined to a plane, without spatial constraints for the motion of individual atoms. This enables creation and observation of non-adiabatic electronic Rydberg dynamics in atoms accelerated by dipole-dipole interactions under natural conditions. Using the full $l=0,1$ $m=0,\pm1$ angular momentum state space, our simulations show that conical intersection crossings are clearly evident, both in atomic position information and excited state spectra of the Rydberg system. Hence, flexible Rydberg aggregates suggest themselves for probing quantum chemical effects in experiments on length scales much inflated as compared to a standard molecular situation.
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