Quantum dots in the attosecond pulse train

Abstract

The problem of quantum dots in the attosecond pulse train as a kicking field is considered. The possibility of the kicking field to generate any secondary radiation is examined. The focus is on considering the principle of high-order harmonic generation within the velocity gauge. Such an approach is less frequently used. It is shown that the attosecond pulse train generates secondary radiation in a wider spectral range similar to high-order harmonic generation. This is a new effect highlighted previously when examining the same problem with alkali metals. Second, the impact of atto-kicks on quantum dot which contains a hydrogen impurity is investigated. A generalized inverse participation ratio, known from quantum chaos, is introduced as a measure of the localization of wave functions. Thus it is shown that atto-kicks tend to delocalize wave functions at least in the significant part of the spectrum.