# Degenerate Landau-Zener model in the presence of quantum noise

## TL;DR

This paper investigates how quantum noise affects the degenerate Landau-Zener model, focusing on decoherence-free subspaces to optimize population transfer despite environmental interactions.

## Contribution

It analyzes the impact of quantum noise on the degenerate Landau-Zener model and explores decoherence-free subspaces to mitigate noise effects.

## Key findings

- Quantum noise influences population transfer efficiency.
- Decoherence-free subspaces can minimize noise impact.
- Engineered coupling schemes improve robustness against noise.

## Abstract

The degenerate Landau-Zener-Majorana-St\"uckelberg model consists of two degenerate energy levels whose energies vary with time and in the presence of an interaction which couples the states of the two levels. In the adiabatic limit, it allows for the populations transfer from states of one level to states of the other level. The presence of an interaction with the environment influences the efficiency of the process. Nevertheless, identification of possible decoherence-free subspaces permits to engineer coupling schemes for which quantum noise can be minimized.