Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 11: Quantum Optics II
Q 11.4: Vortrag
Montag, 6. März 2017, 17:45–18:00, P 5
Bridging the UV-IR gap: Fabrication and characterization of an integrated frequency converter — •Matteo Santandrea, Helge Rütz, Christof Eigner, Laura Padberg, Raimund Ricken, and Christine Silberhorn — Universität Paderborn, Integrierte Quantenoptik, Warburger Str. 100, D-33098 Paderborn
One of the basic building blocks of quantum networks will be interfaces between different physical systems, e.g. between atoms and low loss fibers. The transition wavelengths of atoms and ions often lie in the ultraviolet spectral range; therefore, it is necessary to develop devices able to bridge the gap between these two wavelength ranges. Periodically-poled, rubidium-exchanged potassium titanyl phosphate (PP Rb:KTP) waveguides are ideally suited interfaces, thanks to their high photorefractive damage resistance and the possibility to achieve poling periods in the µm range.
We designed and fabricated a PP Rb:KTP waveguide to perform sum frequency generation (SFG) between 397 nm and 1564 nm in order to interface a 40Ca+ quantum memory with a standard telecom fiber network in the C-band.
Here, we want to present the measured properties, both linear and nonlinear, of our first working prototype and discuss how to further improve the performance of the device.