Dresden 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
QI: Fachverband Quanteninformation
QI 14: Quantum Information Poster Session
QI 14.10: Poster
Mittwoch, 11. März 2026, 18:00–21:00, P4
Entanglement of Electron and Nuclear Spins in Diamond — •Magnus J. R. Platena, Marius M. Straßner, Tim C. Duka, and Martin S. Brandt — Walter Schottky Institut, TU München, Am Coulombwall 4, 85748 Garching
Entanglement is one of the most surprising and counterintuitive phenomena of quantum physics. Nitrogen-vacancy (NV) centers in diamond provide a platform for studying this phenomenon at room temperature, a unique advantage of this solid-state system. The goal of this work is to demonstrate and quantify the entanglement of electron spins and 15N nuclear spins in ensembles of NV centers via optically detected magnetic resonance. In a first step, we characterize isotopically engineered diamonds as a function of 15N concentration, electron irradiation, and annealing and reproduce the published dependence of T2 and T2* on nitrogen concentration. With the help of electron nuclear double resonance, we entangle the two spins and quantify the entanglement via quantum state tomography and application of the Peres criterion.
Keywords: NV center; Entanglement; Diamond; Nitrogen-vacancy