重碰撞过程中的Fano共振特性
Characterizing Fano Resonances During Recollision
摘要：
当强光照射量子系统时，电离电子与其母离子在同一光周期内发生碰撞，在非常短暂（几飞秒）的相遇期间，其动能从低能量扫到高能量，然后返回。因此，时间分辨提供了前所未有的时间分辨率，它是阿秒科学建立的基础。对于简单的系统，滑移轨道是由强场和库仑势共同作用形成的，并且它们可以很容易地计算和测量。然而，对于更复杂的复杂系统，多电子效应也很重要，因为它们动态地改变了滑动的波包轨迹。在这里，我们从理论上研究法诺共振，最方便的多电子效应之一，我们展示了如何多电子动力学可以明确地隔离，当我们使用原位测量。一般的原位测量可以提供含时从头计算电子结构理论所需的关键信息，并使我们能够测量物质的最终时间响应。
英文摘要：
When intense light irradiates a quantum system, an ionizing electron recollides with its parent ion within the same light cycle and, during that very brief (few femtosecond) encounter, its kinetic energy sweeps from low to high energy and back. Therefore, recollision offers unprecedented time resolution and it is the foundation on which attosecond science is built. For simple systems, recolliding trajectories are shaped by the strong field acting together with the Coulomb potential and they can be readily calculated and measured. However, for more complex systems, multielectron effects are also important because they dynamically alter the recolliding wave packet trajectories. Here, we theoretically study Fano resonances, one of the most accessible multielectron effects, and we show how multielectron dynamics can be unambiguously isolated when we use in situ measurement. The general class of in situ measurement can provide key information needed for time-dependent ab initio electronic structure theory and will allow us to measure the ultimate time response of matter.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
