Stuttgart 2012 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 19: Quanteninformation: Festkörper und Photonen
Q 19.2: Vortrag
Montag, 12. März 2012, 16:45–17:00, V38.04
Electron spin entanglement in diamond at room temperature — •Florian Dolde1, Ingmar Jakobi1, Boris Naydenov1,2, Sebastien Pezzagna3, Jan Meijer3, Christina Trautmann4, Philipp Neumann1, Fedor Jelezko2, and Jörg Wrachtrup1 — 13. Physikalische Institut Universität Stuttgart — 2Institut für Quantumoptik Univrsität Ulm — 3Rubion Ruhr-Universität Bochum — 4GSI Darmstadt
Negatively charged centers (NV) in diamond are one of the most remarkable colour defect centres owing to their unique properties. The electron and nuclear spin state of a single NV can be initialized, readout and manipulated even at room temperature. Moreover, NVs show very long electron spin coherence times, which make them ideal candidates for solid state quantum bits (qubits). Quantum register based on two coupled NVs has been already demonstrated [1], but due to short coherence times of that NVs, it was not possible to create entanglement.
Here we report the preparation of different entangled states between two NVs produced by nitrogen ion implantation in an isotopically purified 12C diamond. The entangled state were used to conduct global phase measurements and an entanglement storage scheme using the intrinsic 15N nuclear spin was implemented
[1]P. Neumann et al., Nat. Phys. 6, 249 (2010).