科学家通过双色圆偏振激光场控制时间三缝干涉
近日,北京大学的刘运全及其研究团队取得一项新进展。经过不懈努力,他们通过双色圆偏振激光场控制时间三缝干涉。相关研究成果已于2025年2月6日在国际知名学术期刊《物理评论A》上发表。
该研究团队研究了在双色(800纳米和1600纳米)圆偏振激光场中,氩原子电离所产生的光电子动量分布(PMDs),特别是在激光传播平面内的情况。
研究结果表明,在特定幅度的反旋转双色激光场比率下,沿激光传播方向的PMDs呈现出干涉结构。研究人员将沿激光传播方向观察到的光电子干涉图样归因于时间上的三缝干涉。
此外,研究人员还发现,通过调整幅度比率,可以控制这种时间上的三缝干涉。这些发现对于原子和分子结构的高分辨率成像,以及利用时间三缝干涉进行量子控制,具有重要意义。
附:英文原文
Title: Controlling temporal triple-slit interference by two-color circularly polarized laser fields
Author: Xiaoxiao Long, Peizeng Li, Yankun Dou, Jing Li, Yunquan Liu
Issue&Volume: 2025/02/06
Abstract: We investigate the photoelectron momentum distributions (PMDs) resulting from ionization of Ar atoms by bicircular two-color (800- and 1600-nm) laser fields in the laser propagation plane. Our results demonstrate that the PMDs along the laser propagation direction reveal interference structures at a certain amplitude ratio of counter-rotating two-color laser fields. We attribute the observed photoelectron interference patterns along the laser propagation direction to temporal triple-slit interference. Furthermore, we show that the temporal triple-slit interference can be controlled by tuning the amplitude ratio. These findings have significant implications for high-resolution imaging of atomic and molecular structures, as well as quantum control using temporal triple-slit interference.
DOI: 10.1103/PhysRevA.111.023104
Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.023104
来源:科学网 小柯机器人