Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics III
Q 42.57: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Coupling of color centers in nanodiamonds to open access micro-cavities — •Marcel Schmidt1, A. Bommer1, S. Lindner1, L. Gines2, O. Williams2, A. Muzha3, A. Krueger3, and C. Becher1 — 1Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes, Campus E2.6, 66123 Saarbrücken — 2School of Engineering, Cardiff Universtiy, Newport Road, Cardiff CF24 3AA, Wales — 3Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg
Since its first demonstration as qubit in quantum information applications, the nitrogen vacancy (NV) center gained much attention as promising candidate for remote entanglement schemes [1] and quantum sensing [2]. A way to improve its suitability is the coupling of single NV centers to open access micro-cavities which increases the photon rate per frequency interval [3]. A theoretical model predicts a transition into a Purcell-enhanced regime at cryogenic temperatures, when the narrow zero phonon line (ZPL) of the NV center is coupled to a fundamental mode of the cavity. We here report our progress towards cryogenic cavity coupling of NV centers. In recent years, another color center, the silicon vacancy (SiV) center has been established as bright single photon source [4]. Due to its narrow ZPL linewidth at room temperature and its short lifetime of the excited state, coupling this color center to a micro-cavity can provide a high speed, high efficiency single photon source at room temperature. [1] B. Hensen, Nature 526, 682-686 (2015) [2] L. Rondin, Rep. Prog. Phys. 77 (2014) [3] R. Albrecht, PRL 110, 243602 (2013) [4] E. Neu, NJP 13, 025012 (2011)