标题： 冷里德堡原子中观察原子间相互作用对阿特勒-汤斯分裂的影响 显示英文标题

标题： Observation of effects of inter-atomic interaction on Autler-Townes splitting in cold Rydberg atoms

摘要： 我们通过冷原子中的Autler-Townes分裂展示了高度激发里德堡原子中原子间相互作用的影响。我们测量了由于利用用于磁光阱（MOT）的冷却光束强烈耦合过渡而产生的87Rb原子5S1/2, F=2到5P3/2, F'=3跃迁的Autler-Townes（AT）分裂。通过从5P3/2, F'=3态到高度激发里德堡态的弱耦合跃迁，在广泛的主量子数范围（n = 35 - 117）内探测AT分裂。我们通过扫描探针频率，在MOT中通过俘获损失光谱观察到AT分裂。我们观察到对于主量子数n > 100的高度激发里德堡态，由于冷里德堡原子中由相互作用引起的去相位效应，AT分裂信号的展宽急剧增加。我们使用基于林布兰德主方程的理论建模和数值模拟来解释我们的观测结果。我们发现数值模拟的结果与实验测量结果有很好的一致性。 显示英文摘要

摘要： We demonstrate the effect of inter-atomic interaction in highly excited Rydberg atoms via Autler- Townes splitting in cold atoms. We measure the Autler-Townes (AT) splitting of the 5S1/2, F=2 to 5P3/2, F'=3 transition of 87Rb atoms arising due to the strong coupling of the transition via the cooling beams used for the magneto-optical trap (MOT). The AT splitting is probed using a weakly coupled transition from 5P3/2, F'=3 state to highly excited Rydberg states for a wide range of principal quantum numbers (n = 35 - 117). We observe the AT splitting via trap-loss spectroscopy in the MOT by scanning the probe frequency. We observe a drastic increase in the broadening of the AT splitting signal as a result of interaction-induced dephasing effect in cold Rydberg atoms for highly excited Rydberg states with principal quantum number n > 100. We explain our observations using theoretical modelling and numerical simulations based on the Lindblad Master equation. We find a good agreement of the results of the numerical simulation with the experimental measurements.