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.
@article{arxiv.2403.15584,
title = {Multipartite entanglement distribution in a topological photonic network},
author = {Juan Zurita and Andrés Agustí Casado and Charles E. Creffield and Gloria Platero},
journal= {arXiv preprint arXiv:2403.15584},
year = {2025}
}