Scientists have proposed and experimentally demonstrated a method to generate high-dimensional topological photonic entanglement.[2][4] The platform uses carefully designed silicon photonic waveguide topological superlattices that support the nonlinear generation of time-energy entangled photon pairs on the superposition of multiple topological modes.[2][4][9] Measurements and theoretical analysis revealed the entanglement of up to five topological modes with resistance to nanofabrication imperfections.[2][4][6][8] This method overcomes the previous limitation of entanglement of only two modes and allows scaling to higher dimensions.[2][9] Entanglement is produced by a spontaneous DFWM process in a multi-waveguide structure, where the output photons are separated spectroscopically at wavelengths of approximately 1545 nm and 1555 nm.[4] The dimensionality of entanglement predictably increases with unit cell complexity of the structure, providing controlled access to larger Hilbert spaces of topologically protected modes.[4] Experimental biphoton correlation maps confirm the robustness of quantum states to nanofabrication tolerances via Schmidt decomposition and overlap metrics.[4] This study at the interface of nonlinear integral photonics, quantum information, and topology paves the way to scalable and durable photonic quantum states.[2]