Exciton dynamics in emergent Rydberg lattices
Exciton dynamics in emergent Rydberg lattices
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DOI：
10.1103/physreva.88.043436
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发表时间：
2013-10-31
影响因子：
2.9
通讯作者：
Ates, C.
中科院分区：
文献类型：
--
作者：
Bettelli, S.;Maxwell, D.;Ates, C.
研究了偏序一维系综中激子的动力学。在光激发过程中，冷里德堡原子由于相互作用自发地组织成规则的空间排列。利用这种跃迁晶格，研究了利用微波场驱动NS到N‘P跃迁所引发的共振能量转移。通过检测NS里德堡态原子的存活几率来探讨这种动力学。实验数据定性地符合我们的理论预测，包括在强驱动极限下映射到XXZ自旋模型。我们的结果表明，浮现Rydberg晶格为研究结构介质中的相干能量传递提供了一个理想的平台，而不需要外加的势。
The dynamics of excitons in a one-dimensional ensemble with partial spatial order are studied. During optical excitation, cold Rydberg atoms spontaneously organize into regular spatial arrangements due to their mutual interactions. This emergent lattice is used as the starting point to study resonant energy transfer triggered by driving a nS to n'P transition using a microwave field. The dynamics are probed by detecting the survival probability of atoms in the nS Rydberg state. Experimental data qualitatively agree with our theoretical predictions including the mapping onto the XXZ spin model in the strong-driving limit. Our results suggest that emergent Rydberg lattices provide an ideal platform to study coherent energy transfer in structured media without the need for externally imposed potentials.