研究目的
To study the formation of quantum vortices at the ionization of an atom by an ultrashort laser pulse in both two-dimensional and three-dimensional spaces.
研究成果
The study demonstrates that the solutions of the two-dimensional problem allow identifying the region forbidden for the electron in the three-dimensional space, which can be interpreted as the center of a quantum vortex. The appearance of zeros of the wavefunction in the three-dimensional space, corresponding to quantum vortices, is attributed to quantum interference between the final states of the photoelectron.
研究不足
The study is limited to the case of barrier-suppression ionization and uses the one-level atom approximation, which does not account for transitions through intermediate states of the discrete spectrum. The parameters of the ionizing pulse are chosen such that effects of tunneling are neglected.
