A photon was teleported across 270 meters in stunning quantum breakthrough
AI Summary: An international research team, including scientists from Paderborn University, has successfully teleported the polarization state of a single photon between two physically separated quantum dots, marking a significant advancement toward a quantum internet. The experiment utilized a 270-meter free-space optical link and achieved a teleportation state fidelity of 82 ± 1%, surpassing classical limits. This work, which builds on a decade of collaboration and strategic planning, demonstrates the potential of semiconductor quantum dots as key technologies for future quantum communication networks. The next objective is to demonstrate 'entanglement swapping' to establish the first quantum relay using deterministic sources of entangled photons.