2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/110648We demonstrate ultrafast coherent coupling between an atomic qubit stored in a single trapped cadmium ion and a photonic qubit represented by two resolved frequencies of a photon. Such ultrafast coupling is crucial for entangling networks of remotely-located trapped ions through photon interference, and is also a key component for realizing ultrafast quantum gates between Coulomb-coupled ions.4 pages, 4 figuresQuantum Physicstext