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Q: Fachverband Quantenoptik und Photonik
Q 45: Precision Measurement and Metrology 2
Q 45.4: Talk
Thursday, March 17, 2011, 11:30–11:45, HÜL 386
NV color centers for magnetic field sensing at the nanoscale — •Friedemann Reinhard1, Bernhard Grotz1, Gopalakrishnan Balasubramanian1,3, Julia Tisler1, Eike Oliver Schäfer-Nolte1,2, Markus Ternes2, Florian Rempp1, Klaus Kern2, Fedor Jelezko1, and Jörg Wrachtrup1 — 1Universität Stuttgart, 3. Physikalisches Institut — 2Max-Planck-Institut für Festkörperforschung, Stuttgart — 3Max-Planck-Institut für biophysikalische Chemie, Göttingen
The NV color center in diamond can be used as a magnetic field sensor with sub-nanometer spatial resolution. This prospect arises from the fact that its spin sublevels are sensitive to magnetic fields, only ~1kHz wide and are accessible to pulsed optical-microwave precision spectroscopy.
I present our work towards such a scanning probe diamond nano-magnetometer, focussing on the study of centers, which have been created few nanometers below the diamond surface. We are using such centers to sense noise from surface spins and charges, testing advanced techniques like dynamic decoupling and double--resonance EPR spectroscopy.