Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 32: Quantum Information: Atoms and Ions II
Q 32.3: Vortrag
Mittwoch, 10. März 2010, 14:30–14:45, E 214
Nanoscale electric field sensing via the Stark effect of a single NV− center in diamond — •Helmut Rathgen1, Florian Dolde1, Tobias Nöbauer2, Fedor Jelezko1, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Uni Stuttgart — 2Atom Chip Group, TU Wien
We measure the Stark effect of a single Nitrogen vacancy center in diamond, and demonstrate its capability as a nanoscale electric field sensor. High sensitivity towards slowly oscillating electric fields is reached through coherent refocussing of the electron spin, following Hahn-echo and Carr-Purcell-Meiboom-Gill (CPMG) scheme. Experimental data of the Stark effect is confronted with current model Hamiltonians of the NV− center. A highly local (nm scale) electric field measurement is enabled by using NV-doped diamond nano crystals, paving the way to in situ biological field sensing applications.