Hannover 2010 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 42: Precision Measurements and Metrology V
Q 42.1: Talk
Thursday, March 11, 2010, 10:30–10:45, A 310
NV color centers for magnetic field sensing at the nanoscale — •Friedemann Reinhard1, Eike Oliver Schäfer-Nolte1,2, Markus Ternes2, Bernhard Grotz1, Helmut Rathgen1, Gopalakrishnan Balausbramanian1, Julia Tisler1, Klaus Kern2, Fedor Jelezko1, and Jörg Wrachtrup1 — 1Universität Stuttgart, 3. Physikalisches Institut — 2Max-Planck-Institut für Festkörperforschung, Stuttgart
One of the most promising applications of the NV color center in diamond is to use it 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 ca. 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 two aspects: Firstly, the development of tailored atomic force microscopes with an efficient optical and microwave access. Secondly, the study of the surface properties of diamond, most notably of magnetic and electric noise, which presumably limits the coherence time of NV centers near the diamond surface and in nanodiamonds.