Entanglement production by the magnetic dipolar interaction dynamics

TL;DR

This paper investigates how magnetic dipolar interactions can generate entanglement between two qubits, analyzing the influence of initial states, interaction parameters, and symmetry to optimize entanglement production.

Contribution

It provides a detailed analysis of entanglement dynamics under magnetic dipolar interactions and identifies conditions for maximal entanglement from various initial states.

Findings

Maximum entanglement depends on initial state symmetry and coherence.

Entanglement can be optimized by tuning interaction parameters.

Partially entangled initial states can yield maximal entanglement.

Abstract

We consider two qubits prepared in a product state and evolved under the magnetic dipolar interaction (MDI). We describe the dependence of the entanglement generated by the MDI with time, with the interaction parameters, and with the system's initial state, identifying the symmetry and coherence aspects of those initial configurations that yield the maximal entanglement. We also show how one can obtain maximum entanglement from the MDI applied to some families of partially entangled initial states.