Daniel A. Vajner, Koray Kaymazlar, Fenja Drauschke, Lucas Rickert, Martin von Helversen, Hanqing Liu, Shulun Li, Haiqiao Ni, Zhichuan Niu, Anna Pappa, Tobias Heindel. "Single-photon advantage in quantum cryptography beyond QKD." Nature Communications (2026). https://doi.org/10.1038/s41467-026-69995-9