论文标题
量化状态混合对Rydberg激发封锁的影响
Quantifying the impact of state mixing on the Rydberg excitation blockade
论文作者
论文摘要
Rydberg的激发封锁是最近成就令人印象深刻的核心。但是，国家混合互动会损害其效率。当超低原子对Förster共振附近的Rydberg状态感到兴奋时，在激发后NS的偶极耦合产品状态中，可以在NS的偶极耦合产品状态中找到高达$ \ sim 50 \％的原子。关于这种混合发生的机制的文献存在分歧。我们使用状态选择性场电离光谱法以逐射为基础测量在窄带激发激发期间填充的Rydberg状态的分布。我们的方法使我们既可以确定每个混合事件添加的其他Rydberg激发的数量，又可以量化状态混合``断裂''的程度。为了激发对$ nd_ {5/2} $状态的Ultrocold Rubidium原子的激发，我们发现混合与三体过程一致，除了附近的Förster共振。
The Rydberg excitation blockade has been at the heart of an impressive array of recent achievements; however, state-mixing interactions can compromise its efficiency. When ultracold atoms are excited to Rydberg states near Förster resonance, up to $\sim 50\%$ of atoms can be found in dipole coupled product states within tens of ns after excitation. There has been disagreement in the literature regarding the mechanism by which this mixing occurs. We use state-selective field ionization spectroscopy to measure, on a shot-by-shot basis, the distribution of Rydberg states populated during narrowband laser excitation. Our method allows us to both determine the number of additional Rydberg excitations added by each mixing event, and to quantify the extent to which state mixing ``breaks'' the blockade. For excitation of ultracold rubidium atoms to $nD_{5/2}$ states, we find that the mixing is consistent with a three-body process, except near exact Förster resonance.
