  The recent advent of photonic topological insulators has opened the door to
using the robustness of topologically protected transport (originated in the
domain of condensed matter physics) in optical devices and in quantum
simulation. Concurrently, quantum walks in photonic networks have been shown to
yield exponential speedup for certain algorithms, such as Boson sampling. Here
we theoretically demonstrate that photonic topological insulators can robustly
protect the transport of quantum information through photonic networks, despite
the presence of disorder.
