Time-dependent two-level models and zero-area pulses

TL;DR

This paper reviews time-dependent two-level models in quantum physics, focusing on zero-area pulses and demonstrating their dynamics and potential applications in quantum control and information processing.

Contribution

It provides an analysis of zero-area pulse dynamics using the Sech-Tanh model and validates the Dykhne-Davis-Pechukas approach for transition probabilities.

Findings

Dykhne-Davis-Pechukas approach accurately predicts transition probabilities for certain parameters

Zero-area pulses can be effectively modeled with Sech-Tanh pulses

Potential applications in quantum control and quantum information

Abstract

Time-dependent two-level models have been an important element in physics, and in particular in quantum optics since 1930's. We review the basics of these models and focus on the dynamics induced by off-resonant zero-area pulses by using a Sech-Tanh pulse model as an example. We show that the final transition probability for this model is described accurately by the Dykhne-Davis-Pechukas approach for certain parameter regions. Finally, we note the potential of such zero area pulse models in quantum control and quantum information.