近日，美国光学会期刊《Optics Letters》上发表课题组最新研究成果。 

论文题目：Attosecond all-optical control and visualization of quantum interference between degenerate magnetic states by circularly polarized pulses

作者信息：Chuan-Cun Shu, Yu Guo, Kai-Jun Yuan, Daoyi Dong, and André D. Bandrauk

论文摘要：

Controlling coherence and interference of quantum states is one of the central goals in quantum science. Different from energetically discrete quantum states, however, it remains a demanding task to visualize coherent properties of degenerate states (e.g., magnetic sublevels). It becomes further inaccessible in the absence of an external perturbation (e.g., Zeeman effect). Here, we present a theoretical analysis of all-optical control of degenerate magnetic states in the molecular hydrogen ion, by using two time-delayed co- and counterrotating circularly polarized attosecond extreme-ultraviolet (XUV) pulses. We perform accurate simulations to examine this model by solving the threedimensional time-dependent Schrödinger equation. A counterintuitive phenomenon of quantum interference between degenerate magnetic sublevels appears in the time-dependent electronic probability density, which is observable by using x-ray-induced transient angular and energy-resolved photoelectron spectra. This work provides an insight into quantum interference of electron dynamics inside molecules at the quantum degeneracy level.

论文链接：https://www.osapublishing.org/ol/abstract.cfm?uri=ol-45-4-960 

Optics LettersPeer-reviewed journal

Description

Optics Letters is a biweekly peer-reviewed scientific journal published by The Optical Society. It was established in July 1977. The editor-in-chief is Xi-Cheng Zhang. The journal covers all topics pertaining to optics and photonics. Impact factor: 3.589 (2018)