Multi-electron dynamics in the tunnel ionization of correlated quantum systems

TL;DR

This paper investigates multi-electron dynamics during tunnel ionization in correlated quantum systems, highlighting the importance of multi-electron descriptions and how intense light fields can enhance electron correlations.

Contribution

It compares TDSE and TDCIS methods to demonstrate the significance of multi-electron effects in tunnel ionization, especially in weakly confined systems.

Findings

Multi-electron effects are crucial for accurate tunnel ionization modeling.

Adiabatic intense light fields can enhance electron correlations.

Comparison shows limitations of single-electron approaches.

Abstract

The importance of multi-electron dynamics during the tunnel ionization of a correlated quantum system is investigated. By comparison of the solution of the time-dependent Schr\"odinger equation (TDSE) with the time-dependent configuration interaction singles approach (TDCIS), we demonstrate the importance of a multi-electron description of the tunnel ionization process especially for weakly confined quantum systems. Within this context, we observe that adiabatic driving by an intense light field can even enhance the correlations between still trapped electrons.