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Q: Fachverband Quantenoptik und Photonik
Q 15: Poster 1: Quanteninformation, Quanteneffekte, Laserentwicklung, Laseranwendungen, Ultrakurze Pulse, Photonik
Q 15.20: Poster
Montag, 14. März 2011, 16:30–19:30, P1
Enhanced single photon emissions from nitrogen-vacancy centers in diamond — •Moritz Eyer1, Helmut Fedder1, Merle Becker1, Robert Roßbach2, Daniel Richter2, Michael Jetter2, Peter Michler2, Fedor Jelezko1, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Universität Stuttgart — 2Institut für Halbleiteroptik und Funktionelle Grenzflächen, Universität Stuttgart
Nitrogen-Vacancy (NV) centers in nano diamonds or bulk diamonds are a promising source for single photon emissions, which is stable even at room temperature. This opens the door to a great field of applications such as quantum computing, nano sensing and optical imaging below the diffraction limit. Our goal is to increase the photon yield of these emissions by using specially created structures of the diamond material and its surroundings. The resonant coupling to plasmonic structures and micro layer cavities are promising proposals in order to both increase the excitation rate and decrease the lifetime of the excited NV centers and to enhance the emitted field without losing their character as a quantum mechanic single photon process.
The necessary measurements are realized by using Fluorescence Lifetime Imaging Microscopy (FLIM) and antibunching measurements attached to a confocal microscope. Enhanced single phtoton emission from NV centers holds promise for applications in quantum cryptography, nondeterministic quantum computation based on indistinguishable photons, as well as entanglement generation of distant NV spin qubits.