# Multipartite entanglement distribution in a topological photonic network

**Authors:** Juan Zurita, Andrés Agustí Casado, Charles E. Creffield, Gloria Platero  
**arXiv:** [2403.15584](https://arxiv.org/abs/2403.15584)  
**Date:** 2024-03-22  
**Summary page:** https://www.summarizepaper.com/fr/arxiv-id/2403.15584v1/

## Abstract

In the ongoing effort towards a scalable quantum computer, multiple technologies have been proposed. Some of them exploit topological materials to process quantum information. In this work, we propose a lattice of photonic cavities with alternating hoppings to create a modified multidomain SSH chain, that is, a sequence of topological insulators made from chains of dimers. A qubit is then coupled to each boundary. We show this system is well suited for quantum information processing because topological transfer of photons through this one-dimensional lattice can entangle any set of qubits on demand, providing a scalable quantum platform. We verify this claim evaluating entanglement measures and witnesses proving that bipartite and multipartite entanglement is produced, even in the presence of some disorder.