Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 66: Quantum effects: Entanglement and decoherence II

Q 66.2: Talk

Friday, March 22, 2013, 14:30–14:45, A 310

Smooth Optimal Control of Nitrogen-Vacancy Centers — •Björn Bartels¹, Tobias Nöbauer², Johannes Majer², and Florian Mintert¹ — ¹Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg, Albertstr. 19, 79104 Freiburg, Germany — ²Vienna Center for Quantum Science and Technology, Atominstitut, Technische Universität (TU) Wien, Stadionallee 2, 1020 Vienna, Austria

We present pulse shaping techniques that allow us to control ensembles of NV centers with external time-dependent fields that contain only a few predefined frequency components. By doing this, we respond to experimental challenges in implementing the broad band pulses typically generated with existing optimal control algorithms. With our approach we target the design of control pulses for the manipulation of ensembles of NV centers and the interaction of such ensembles with microwave cavities. We construct high fidelity pulses that cope with inhomogeneous broadening in the ensemble as well as inhomogeneity in the control field itself.