Robust quantum routing is essential for scalable quantum technologies. This paper investigates the resilience of routing protocols in network architectures designed for perfect, high-fidelity transfer of both classical and quantum information under ideal conditions. We encode information in the position of a quantum walker on a graph, modelling the routing of a generic qubit state from a single input to multiple (orthogonal) outputs. We analyse and assess routing performance in various regimes, evaluating their robustness against static and dynamical noise.
@article{arxiv.2601.14824,
title = {Routing Qubits on Noisy Networks},
author = {Claudia Benedetti and Giovanni Ragazzi and Simone Cavazzoni and Paolo Bordone and Matteo G. A. Paris},
journal= {arXiv preprint arXiv:2601.14824},
year = {2026}
}