Berlin 2001 – scientific programme

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Q: Quantenoptik

Q 9: Poster: Quantum Information

Q 9.20: Poster

Tuesday, April 3, 2001, 12:30–15:00, AT2

Low Temperature Spectroscopy on Single Defect Centers — •Fedor Jelezko, Uwe Gerken, Carsten Tietz, and Joerg Wrachtrup — 3.Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart

Due to their high photostability single nitrogen-vacancy (NV) defect centers in diamond are ideal atomic solid state light sources. Consequently, their use as single-photon emitters for quantum communication has be proposed recently. However, the low temperature properties of the defect have not been investigated in great detail up to now. We will present new results on low temperature high-resolution optical spectroscopy on single NV-defects in diamond. In thin highly strained diamond crystals the photophysical properties of NV-centers are such that despite rapid spectral diffusion or intersystem-crossing intense zero-phonon lines can be detected. The results will be discussed in the context of existing theories about the energetic structure of the center.