Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics III
Q 42.51: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Towards efficient solid-state based light-matter interfaces based on dielectric slot waveguides — •Martin Zeitlmair1, Lars Liebermeister1, Peter Fischer1, Lukas Worthmann1, Markus Weber3, and Harald Weinfurter1,2 — 1Ludwig-Maximilians-Universität, München — 2Max-Planck-Institut für Quantenoptik, Garching — 3Max-Planck-Institut für die Physik des Lichts, Erlangen
Efficient light-matter interfaces are a crucial prerequisite for future applications in applied quantum information science and ultra-sensitive phase, absorption, and fluorescence spectroscopy. Such light-matter interfaces require two key components: a non-classical light source and a waveguiding structure to control the propagation of photons. Here, we present progress towards a novel on-chip interface operating over a broad spectral range in the visible spectrum, which is based on diamond defect centers and tailored dielectric slot waveguides.
The proposed scheme uses defect centers hosted in a nanodiamond as a stable nonclassical light source. With the help of an AFM-based pick-and-place technique, the nanodiamond will be positioned inside the slotted region of a fabricated Ta2O5 waveguide. By optimizing the slot waveguide geometry with the additional requirement of allowing access for the AFM-tip, coupling efficiencies over 60% for the whole spectrum of the NV-center are expected with slot widths of 40nm.