Optimal Control of charge transfer

TL;DR

This paper explores how quantum systems can be manipulated along specific paths using optimized laser pulses, employing quantum optimal control theory in a 2D model to achieve targeted charge transfer processes.

Contribution

It introduces a time-dependent quantum optimal control approach to design laser fields for precise charge transfer in a 2D quantum system.

Findings

Optimized laser fields successfully drive charge transfer processes.

The laser fields involve complex excitation and de-excitation dynamics.

The method demonstrates effective control in a 2D quantum model.

Abstract

In this work, we investigate how and to which extent a quantum system can be driven along a prescribed path in space by a suitably tailored laser pulse. The laser field is calculated with the help of quantum optimal control theory employing a time-dependent formulation for the control target. Within a two-dimensional (2D) model system we have successfully optimized laser fields for two distinct charge transfer processes. The resulting laser fields can be understood as a complicated interplay of different excitation and de-excitation processes in the quantum system.