Engineering quantum wave-packet dispersion with a strong nonresonant femtosecond laser pulse
arXiv:1910.08241 · doi:10.1103/PhysRevResearch.3.043021
Abstract
A non-dispersing wave packet has been attracting much interest from various scientific and technological viewpoints. However, most quantum systems are accompanied by anharmonicity, so that retardation of quantum wave-packet dispersion is limited to very few examples only under specific conditions and targets. Here we demonstrate a conceptually new and universal method to retard or advance the dispersion of a quantum wave packet through 'programmable time shift' induced by a strong non-resonant femtosecond laser pulse. A numerical simulation has verified that a train of such retardation pulses stops wave-packet dispersion.
10 pages, 4 figures (main) + 3 pages, 1 figures (supplement) + 1 supplemental movie