Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 34: Poster 1

Q 34.74: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II

Microwave driven nanoscopic resolution of two neighbour single NV centres in diamond: Micro-(wave)-scopy — •Andreas Häußler1, Luca Marseglia1, Florian Striebel1, Manfred Bürzele1, Ressa Said2, Pascal Heller1, Philip Hemmer3, Jörg Wrachtrup4, and Fedor Jelezko11Institut für Quantenoptik, Universität Ulm, Germany — 2Institut für Quanteninformationsverarbeitung, Universität Ulm, Germany — 3Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843, USA. — 43. Physikalisches Institut, Universität Stuttgart, Germany

The negatively charged Nitrogen Vacancy color center (NV) is 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 microwave field (2.88 GHz). We aim to resolve two different NV centres separated by a distance in nanoscopic regime. Instead of using advanced confocal microscopy methods we exploit Rabi oscillations of the spin of the NV centre which show a spatial dependence due to applied microwave fields. Therefore we fabricate a microwave circuit, directly placed onto the diamond, which will allow us to apply different high intensity microwave fields and gradients. Besides this, knowing the spatial behaviour of the microwave field is crucial. To this aim we perform simulations of the microwave circuit also characterising them. Finally the relation between the Rabi oscillations and the microwave field of two NV centres close to each other can be used in order to compute the distance between them, with a resolution below 50 nm.

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