匈牙利德布勒森大学András Csehi团队研究了从拉比振荡到动态干涉的转变：奥特-汤斯双重态的多峰模式再探。这一研究成果于2025年3月10日发表在《物理评论A》上。

最近的研究表明，拉比振荡（RO）和动态干涉（DI）都会导致电离光电子光谱中明显的多峰模式。这两种突出的动力学效应——强、短和（近）共振激光脉冲与物质相互作用的特征——通常共存，因此很难区分。

研究组通过精确计算光电子能谱，重新审视了奥特-汤斯双重态的多峰模式，以揭示其物理起源。该联合分析和数值分析表明，有选择地填充两个新兴的动态修饰状态是RO和DI之间有效平衡的关键。研究组演示了RO或DI决定光谱形状的物理情况，并探索了这些机制之间的转变。该工作为研究组此前工作提供了进一步的见解。

附：英文原文

Title: Transition from Rabi oscillations to dynamic interference: The multipeak pattern of the Autler-Townes doublet revisited

Author: Ayoub Ait Elarabi, András Csehi

Issue&Volume: 2025/03/10

Abstract: Recent studies have shown that both Rabi oscillations (ROs) and dynamic interference (DI) lead to pronounced multipeak patterns in the spectrum of ionized photoelectrons. These two prominent dynamical effects—characteristic of intense, short, and (near-)resonant laser pulses interacting with matter—usually coexist, and are thus hard to distinguish. Here, we revisit the multipeak pattern of the Autler-Townes doublet to uncover its physical origin, by calculating the photoelectron spectrum accurately. Our joint analytical and numerical analysis reveals that selectively populating the two emerging dynamically dressed states is key to an efficient balancing between ROs and DI. We demonstrate physical situations where either ROs or DI dictate the spectrum shape, and explore the transition between these regimes. The present work provides further insight into our results reported in a previous work [Phys. Rev. A 108, L061101 (2023)].

DOI: 10.1103/PhysRevA.111.033107

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.033107