Dresden 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
QI: Fachverband Quanteninformation
QI 20: Metrology and Sensing
QI 20.4: Vortrag
Freitag, 13. März 2026, 10:15–10:30, BEY/0137
Part 2: Optically Addressable Molecular Spins at 2D surfaces — •Xuankai Zhou1, Yan-Tung Kong1, Cheuk Kit Cheung1, Ruoming Peng1, and Jörg Wrachtrup1,2 — 13. Physikalisches Institut, University of Stuttgart, 70569 Stuttgart, Germany — 2Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
Surface spins with coherent control hold the potential to quantum sensing revolution by nanoscale magnetic imaging. On the pentacene-hBN hybrid platform, we demonstrate distinguished coherence engineering alongside versatile functional sensing. By employing isotope purification and dynamical decoupling, the spin-coherence time is extended to T2 > 30 µs and T2,DD > 300 µs, already approaching the intrinsic triplet state lifetime limit. Meanwhile, it is also available for the platform to sense nearby proton nuclear signals and magnetic responses of two-dimensional magnets beneath hBN layer. This work represents the first demonstration of surface molecular spin sensor, integrating long coherence, optical addressability and interfacial functionality, thereby enabling quantum sensing beyond conventional solid-state spins.
Keywords: Surface Sensing; Molecular Spins; Optically Addressibility; Lifetime-Limit Coherence