Thermal Coherence of Heisenberg Model With Dipole Interaction and Magnetic External Field

TL;DR

This paper investigates how thermal coherence in a two-qubit Heisenberg XXX model is affected by dipole interactions, magnetic fields, and decoherence, revealing the dynamics and dependencies of quantum coherence over time.

Contribution

It provides a detailed analysis of coherence dynamics in a Heisenberg model considering dipole interactions and external magnetic fields, highlighting the effects of intrinsic decoherence.

Findings

Coherence depends on dipole strength, spin distance, and magnetic field.

Decoherence varies with initial state and decoherence parameters.

Long-term coherence behavior is characterized under different conditions.

Abstract

The dynamics of coherence in a two-qubit Heisenberg XXX model with magnetic field in the presence of the intrinsic decoherence is investigated. We discuss the influence of dipole parameter, spin distance, magnetic field and initial state parameter on coherence of the long time limit situation. Then, we discuss how decoherence changes with time with the initial state parameter and the decoherence parameter.