Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 66: Photonics I

Q 66.5: Talk

Friday, March 27, 2015, 12:15–12:30, B/gHS

In-house fabrication and characterization of Rb:PPKTP waveguides for quantum optics applications — •Christof Eigner, Laura Padberg, Helge Rütz, Raimund Ricken, Hubertus Suche, and Christine Silberhorn — Universität Paderborn, Integrierte Quantenoptik, Warburger Str. 100, D-33098 Paderborn

Non-linear processes are of fundamental interest in integrated quantum optics. They are utilised to generate intricate quantum states via parametric down-conversion or used to manipulate or interface photons in network applications. Waveguides offer a multitude of possibilities, as they provide the platform for the network applications, as well as enhance the efficiency of the non-linear processes. The non-linear optical and dispersive properties of Potassium Titanyl Phosphate (KTP) as well as the potentially low-loss rubidium (Rb) exchanged waveguides, make KTP the material of choice for many applications. However, the intrinsic ionic conductivity complicate the reliable fabrication of Rb:PPKTP waveguides.

Here, we present our solution for overcoming this complication and present our first in-house fabricated Rb:PPKTP waveguide. Finally, first optical linear and non-linear characterization results of the fabricated waveguides are presented.