Universität Paderborn (Germany) – UPB

The University of Paderborn (UPB) stands both for modern education and innovative research. With its mission as a University for the Information Society, UPB embodies the concept of a modern profile university. UPB hosts the Center for Optoelectronics and Photonics (CeOPP), an interdisciplinary consortium of working groups focusing on integrated linear and nonlinear optics, featuring excellent clean-room facilities. Long-lasting experience in the fabrication of integrated optical elements based on different material systems in particular nonlinear waveguides in lithium niobate and potassium titanyl phosphate (KTP) result from the fruitful collaboration inside the framework of CeOPP. The Integrated Quantum Optics (IQO) group at UPB has extensive knowledge in the fields of integrated quantum sources and circuits, spectral engineering of pulsed quantum states of light and quantum communication protocols based on multi-photon as well as multimode state encoding. Over the recent years, UPB has developed a number of different methods for the characterization of quantum light with photon number resolved detection. Moreover, partner UPB has experimentally developed different types of pure heralded single photon and entangled pair sources based on integrated waveguide chip.

Role in the project

UPB will contribute within Task 4.1 and Task 4.2 with its expertise on fabrication and characterization of PPLN- and PPKTP-waveguide devices for quantum optic applications. UPB will design the integrated circuits, fabricate corresponding samples and characterize their performance. In parallel, based on the profound expertise in studying photon statistics, UPB will contribute to the evaluation and benchmarking of SPADs. Finally, UPB will participate in the development of the quantum systems-on-chip in WP5, leading in specific the activities for the development of the QRNG. Within WP2, UPB will also participate together with the other quantum engineers and the photonic partners of the consortium in the definition of the system and component specifications.

Key personnel

Christine Silberhorn

Harald Herrmann