Teleported photon state across 270 meters between separate quantum dots at 82% fidelity

An international team from Johannes Kepler University Linz, University of Würzburg, and Sapienza University of Rome achieved quantum teleportation of a photon's polarization state between two physically separate quantum dots over a 270-meter free-space optical link at 82 ± 1% fidelity, exceeding the classical limit by more than ten standard deviations. The collaboration used GPS synchronization, ultra-fast single-photon detectors, and active stabilization to compensate for atmospheric turbulence. Published in Nature Communications and coordinated through Universität Paderborn, this demonstrates that dissimilar quantum dots can transfer quantum information — a critical requirement for real-world distributed quantum networks and the quantum internet.