Creating and preserving multi-partite entanglement with spin chains

TL;DR

This paper demonstrates methods to generate and maintain multi-partite entanglement in spin chains and similar physical systems, with potential applications in quantum information processing.

Contribution

It introduces a technique for creating and preserving multi-partite entanglement in branched spin chains and related systems, expanding possibilities for quantum technologies.

Findings

Multi-partite entanglement can be generated in branched spin chains.

The method allows for preservation of entanglement after creation.

Applicable to various physical systems like quantum dots and molecules.

Abstract

We show how multi-partite entanglement, such as of W-state form, can be created in branched spin chain systems. We also discuss the preservation of such entanglement, once created. The technique could be applied to actual spin chain systems, or to other physical systems such as strings of coupled quantum dots, molecules or atoms.