Berlin 2008 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 17: Poster I

DY 17.16: Poster

Dienstag, 26. Februar 2008, 16:00–18:00, Poster C

Coherence properties of photons emitted by single defect centers in diamond — •Anton Batalov, Christian Zierl, Petr Siyushev, Torsten Gaebel, Fedor Jelezko, and Jörg Wrachtrup — 3. Physikalisches Institut, Pfaffenwaldring 57, D-70550 Stuttgart

Photon interference among distant quantum emitters is a promising method to generate large scale quantum networks. Interference is best achieved when photons show long coherence times. The nitrogen-vacancy (NV) defect center in diamond can be used as a source of single indistinguishable photons. Optically induced Rabi oscillations indicate a close to Fourier transform (i.e. lifetime) limited width of photons emitted even when averaged over minutes. The projected contrast of two-photon interference (0.8) is high enough to envisage the applications in quantum information processing. The time resolved two-photon interference (experiment in preparation) will allow one to describe the photons, emitted by a single NV, in a more direct manner.