利用超荧光定位原子系综
Localization of atomic ensembles via superfluorescence
摘要：
研究了空间小体积原子系综的亚波长局域化。定位依赖于系综与驻波激光场的相互作用。驻波场与原子系综相互作用中的光散射依赖于系综相对于驻波波节的位置。这种关系可以通过荧光强度分布来描述，其取决于驻波场参数、系综性质，并且其由于附近粒子系综中的集体效应而被修改。我们证明，强度分布可以定制，以适应不同的本地化设置。最后，我们将这些结果应用到两个本地化计划。首先，我们展示了如何将固定在驻波场中某个位置的系综局部化。其次，我们讨论了系综通过驻波场时的局域化。
英文摘要：
The sub-wavelength localization of an ensemble of atoms concentrated to a small volume in space is investigated. The localization relies on the interaction of the ensemble with a standing wave laser field. The light scattered in the interaction of standing wave field and atom ensemble depends on the position of the ensemble relative to the standing wave nodes. This relation can be described by a fluorescence intensity profile, which depends on the standing wave field parameters, the ensemble properties, and which is modified due to collective effects in the ensemble of nearby particles. We demonstrate that the intensity profile can be tailored to suit different localization setups. Finally, we apply these results to two localization schemes. First, we show how to localize an ensemble fixed at a certain position in the standing wave field. Second, we discuss localization of an ensemble passing through the standing wave field.
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