Investigating the evolution of quantum entanglement of a qubit-qubit system with Dzyaloshinskii-Moriya interaction in the presence of magnetic fields

TL;DR

This paper studies how quantum entanglement in a two-qubit system evolves under Dzyaloshinskii-Moriya interaction and magnetic fields, using negativity as a measure within Heisenberg models.

Contribution

It explores the entanglement dynamics in qubit systems with DM interaction under magnetic fields, providing insights into their evolution in different Heisenberg models.

Findings

Entanglement is significantly affected by DM interaction and magnetic fields.

Negativity effectively captures the entanglement dynamics in the system.

The evolution varies between isotropic and anisotropic models.

Abstract

In this paper, the quantum entanglement dynamics of a qubit qubit compound system in the isotropic XXX Heisenberg and anisotropic XYZ models with DM interaction under magnetic fields is investigated. The system's initial state is considered as a spin coherence state, and the entanglement dynamics of this compound system is analyzed using the negativity criterion as an entanglement measure to assess the impact of DM interaction and magnetic fields.