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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics III

Q 62.53: Poster

Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer

Large Purcell enhancement of NV-Center fluorescence in an optical nanocavity — •Pradyumna Paranjape¹, Andreas Weißl^1,2, Hanno Kaupp^1,2, Huan-Cheng Chang³, Helmut Fedder⁴, Theodor Hänsch^1,2, and David Hunger^1,2 — ¹Ludwig-Maximilians-Universität, München, Germany — ²Max-Planck-Institut für Quantenoptik, Garching, Germany — ³Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan — ⁴Universität Stuttgart, 70569 Stuttgart , Germany

Nitrogen-Vacancy centers (NV-centers) in diamond provide bright and stable single-photon emission without photo bleaching in cryogenic as well as ambient environments.

To achieve directional emission, good quantum efficiency and significant Purcell enhancement, we investigate a design where NV-centers in nanodiamonds are coupled to a nanoscale gap between two silver mirrors. In this way, a cavity mode with a mode volume below 0.1(λ/n)3 can be achieved, and large Purcell enhancement (C >> 10) is expected. We report on the current status of the experiment.