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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster 2

Q 35.74: Poster

Mittwoch, 14. März 2012, 16:30–19:00, Poster.I+II

Microwave control of N-V centres coupled to structures nano-fabricated on demand — •Florian Striebel, Luca Marseglia, Andreas Häußler, and Fedor Jelezko — Institut für Quantenoptik, Universität Ulm, Albert-Einstein-Allee 11, 89081 Ulm - Germany

The negatively charged Nitrogen Vacancy color center (NV) a spin active defect in diamond with a long spin lifetime at room temperature. It is a three level system whose value of the spin of the ground state can be driven by applying a small microwave field (2.88 GHz) giving a great promise for the implementation of qubits for quantum computing. Here we aim to couple microwave structures, made of metal, lithographically deposited on the diamond, in order to apply high intensity microwave field to the NV, to address its spin and to drive Rabi oscillation of it. We have performed simulations of the microwave structures in order to study the quality of the field and to check the feasibility of its fabrication regarding to conventional evaporative deposition technique. We are able to locate a single NV centre and etch Solid Immersion Lens (SIL) with Focused Ion Beam (FIB) directly onto it, coupling the SIL to the colour centre. We will create a microwave structure, formerly characterised, placed precisely on the nanofabricated SIL coupled to the colour centre. These integrated structures will allow us to handle the spin of the NV centre with very high precision and microwave field intensity.