Hamburg 2009 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Poster I

Q 29.20: Poster

Dienstag, 3. März 2009, 16:30–19:00, VMP 8 Foyer

Laser Spectroscopy on Color Centers in Diamond Films — •David Steinmetz, Elke Neu, Christian Hepp, Michael Hauschild, and Christoph Becher — Fachrichtung 7.3 (Technische Physik), Universität des Saarlandes, 66123 Saarbrücken, Germany

Recent investigations have proven color centers in diamond to be promising candidates for applications in quantum information processing [1]. Due to their optical properties they can be regarded as “artificial atoms” and they offer access to isolated quantum systems that can be controlled at room temperature. For the nitrogen-vacancy center, a number of key experiments have been demonstrated [2,3], but its very broad emission spectrum at room temperature limits its suitability for application as “optical qubits”.
We investigate color centers based on Si, W, Ta, Ni or Xe with more promising properties for single photon emitters and/or optical qubits. They can be generated either during chemical vapor deposition growth process of the diamond films or by subsequent ion implantation.
We investigate the color centers via confocal laser spectroscopy with a grating spectrometer or with a scanning Fabry-Pérot interferometer and we use a Hanbury-Brown-Twiss interferometer to study the suitability of the color centers for solid state single photon sources at room temperature.
[1] S. Prawer and A.D. Greentree, Science 320, 1601 (2008)
C. Kurtsiefer et al., Phys. Rev. Lett. 85, 290 (2000)
F. Jelezko et al., Phys. Rev. Lett. 93, 130501 (2004)