Resolving Quantum Interference Black Box through Attosecond Photoionization Spectroscopy
Resolving Quantum Interference Black Box through Attosecond Photoionization Spectroscopy
复制标题
通过阿秒光电离光谱解决量子干涉黑匣子
DOI：
10.1103/physrevlett.131.203201
复制
发表时间：
2023
影响因子：
8.6
通讯作者：
Jiang W
中科院分区：
文献类型：
--
作者：
Jiang W
多光子光与物质的相互作用引发了一个所谓的“黑箱”，在这个黑箱中，实验观测包含了多条路径之间的量子干涉。在这里，我们使用偏振控制的阿秒光电子计量学和分波操纵器来推导出双光子电离的这个量子‘黑匣子’内的路径干涉。在很宽的能量范围内测量了角度相关和阿秒时间分辨的光电子能谱。通过对这些光电子能谱的综合分析，重建了每个分波的双光子相移。我们解决了简并和双光子电离路径之间的量子干涉，这与我们的理论模拟是一致的。因此，我们的方法提供了一个阿秒时间分辨显微镜，用来观察原子、分子和凝聚态超快动力学中路径干涉的“黑匣子”。
Multiphoton light-matter interactions invoke a so-called “black box” in which the experimental observations contain the quantum interference between multiple pathways. Here, we employ polarization-controlled attosecond photoelectron metrology with a partial wave manipulator to deduce the pathway interference within this quantum ‘black box” for the two-photon ionization of neon atoms. The angle-dependent and attosecond time-resolved photoelectron spectra are measured across a broad energy range. Two-photon phase shifts for each partial wave are reconstructed through the comprehensive analysis of these photoelectron spectra. We resolve the quantum interference between the degenerateandtwo-photon ionization pathways, in agreement with our theoretical simulations. Our approach thus provides an attosecond time-resolved microscope to look inside the “black box” of pathway interference in ultrafast dynamics of atoms, molecules, and condensed matter.