节点依赖的里德堡分子束缚态的观测
Observation of node-dependent Rydberg molecular bound states
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中文总结 AI 辅助
本研究在Rb(nS)-Rb(5S)里德堡分子光谱中观测到节点依赖的p波分子信号，揭示主量子数可调控节点选择性分子束缚态，其方法为电子-原子散射提供灵敏光谱探针。
中文摘要 AI 辅助
超长程里德堡分子由高激发里德堡原子与基态原子相互作用形成，为研究从纳米到微米尺度的量子现象及奇特少体相互作用提供了独特平台。s波与p波散射通道的形成机制及所产生的物理性质存在显著差异。本研究在铷（Rb(nS)-Rb(5S)）里德堡分子光谱中实验观测到了节点依赖的p波分子信号，其中主量子数n的变化直接揭示了由里德堡电子波函数移动节点结构诱导的分子结合能位移。该节点依赖性归因于nS电子波函数的局域梯度与能量依赖p波散射长度之间的协同效应。此外，分辨与相邻节点相关的两个p波束缚态，凸显了本实验实现的卓越亚纳米空间分辨率。研究结果揭示了一种更深刻的量子调控机制，其中主量子数可作为节点选择性分子束缚态的开关，所报道的方法为电子-原子散射提供了灵敏的光谱探针。
英文摘要
Ultralong-range Rydberg molecules, formed by the interaction between a highly excited Rydberg atom and a ground-state atom, provide a unique platform for exploring quantum phenomena spanning nanometer-to-micrometer distances as well as exotic few-body interactions. The formation mechanisms and resultant physical properties differ markedly between s-wave and p-wave scattering channels. Here we report the experimental observation of node-dependent p-wave molecular signals in Rb(nS)-Rb(5S) Rydberg molecular spectra, where variations in the principal quantum number n directly reveal the shift of molecular binding energies induced by the moving nodal structure of the Rydberg electron wavefunction. This node-dependence is attributed to a cooperative effect between the local gradient of the nS-electron wavefunction and the energydependent p-wave scattering length. In addition, resolving two p-wave bound states associated with adjacent nodes highlights the remarkable sub-nanometer spatial resolution achieved in our experiment. Our findings reveal a more profound quantum control mechanism, wherein the principal quantum number acts as a switch for nodal-selective molecular bound states, and the reported method provides a sensitive spectroscopic probe of electron-atom scattering.
