Fraunhofer ISI has released “Quantum Repeaters – A Technology Roadmap,” prepared with Saarland University within the SQuaD project. The study compares hardware platforms including diamond color centers, trapped atoms and ions, atomic ensembles, rare-earth crystals, and semiconductor quantum dots. No single platform has emerged as dominant. First demonstrations of quantum repeaters capable of lower-loss long-distance transmission are projected before 2035. Near-term applications center on extended-range quantum key distribution, with longer-term potential in distributed quantum computing and sensor networks.