Local control of entanglement in a spin chain

TL;DR

This paper demonstrates how local control of magnetic fields in a ferromagnetic spin chain enables precise manipulation and transfer of entanglement, impacting quantum information processing.

Contribution

It introduces a method for controlling entanglement propagation in spin chains through local magnetic field adjustments, a novel approach for quantum state transfer.

Findings

Entanglement transfer can be achieved on demand.

Local magnetic fields effectively control quantum correlations.

Propagation of entanglement is highly tunable.

Abstract

In a ferromagnetic spin chain, the control of the local effective magnetic field allows to manipulate the static and dynamical properties of entanglement. In particular, the propagation of quantum correlations can be driven to a great extent so as to achieve an entanglement transfer on demand toward a selected site.