Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 60: Photonics III
Q 60.5: Vortrag
Freitag, 12. März 2010, 11:30–11:45, F 128
Low temperature studies of near-infrared single-photon emitters in nanodimonds — •Petr Siyushev1, Vincent Jacques1, Igor Aharonovich2, Florian Kaiser1, Tina Müller3, Laurent Lombez3, Mete Atatüre3, Stefania Castelletto2, Steven Prawer2, Fedor Jelezko1, and Jörg Wrachtrup1 — 13.Physikalisches Institut, Universität Stuttgart, D-70550 Stuttgart, Germany — 2School of Physics, University of Melbourne, VA 3010, Australia — 3Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
Source of indistinguishable single photons is a key requirement for the development of the linear quantum computing and large distance entanglement protocols. Such sources have been already demonstrated using molecules, single atoms, semiconductor quantum dots, and PDC.
Most of the color centers in diamond, including NV defects, have the strong disadvantage: their spectrally broad emission band. In contrast to them, the near-infrared defects in nanodiamonds under consideration emit light concentrated in the zero-phonon line. Beside that, the radiative lifetime is in the nanosecond range and the emission is perfectly linearly polarized. The spectral stability of infrared defects is then investigated using resonant excitation at the zero-phonon line. Although Fourier-transform emission was not achieved, our results show that it might be possible to use consecutive photons emitted by infrared defects in diamond nanocrystals to perform two photon interference experiments, which is at the heart of linear quantum computing protocols.