Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 19: Quantum information: Quantum computers
Q 19.7: Talk
Monday, March 18, 2013, 18:15–18:30, E 214
Optimal control of single spins in diamond — •Florian Dolde1, Ingmar Jakobi1, Ya Wang1, Ville Bergholm2,5, Sebastien Pezzagna3, Jan Meijer3, Boris Naydenov4, Fedor Jelezko4, Philipp Neumann1, Thomas Schulte-Herbrüggen2, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Research Center SCoPE, and IQST, Universität Stuttgart, Germany — 2Dept. Chemistry, Technical University Munich (TUM), D-85747 Garching, Germany — 3RUBION, Ruhr Universität Bochum, 44780 Bochum, Germany — 4Institut für Quantenoptik, and IQST, Universität Ulm, Germany — 5Institute for Scientific Interchange Foundation (ISI), I-10126 Turin, Italy
Recent progress in the quantum information experiments with the Nitrogen-Vacancy center (NV) in diamond have allowed for entanglement of two NVs forming a starting point for a quantum register. However the demonstrated fidelity of 0.67 ± 0.04 is not practical for quantum algorithms. The low fidelity was attributed not to decoherence effects but to pulse errors in the entanglement protocol [1].
In this work we investigate the usage of optimal control to perform high fidelity quantum gates on the NV center. Optimal control quantum gates were used to create coherence on a single electron spin and to store electron spin coherence in a long living nuclear spin.
[1] arXiv:1212.2804