Johann Riemensberger
A463 ElektroA Gløshaugen, Trondheim
Research
Nonlinear and Quantum Photonic Integrated Circuits Laboratory:
The Nonlinear and Quantum Photonic Integrated Circuit Laboratory at NTNU’s Department of Electronic Systems develops photonic integrated circuits that generate, amplify and convert light by exploiting the intrinsic nonlinear optical properties of new materials. The group designs, fabricates and characterises ultra-low-loss waveguides in emerging platforms such as thin-film lithium tantalate, lithium niobate, and III-V and II-VI semiconductors. With these, it builds chip-scale optical amplifiers, tunable lasers, frequency combs and quantum light sources. The goal is to shrink functions that today need a full optical table into compact, robust devices for optical communication, sensing, LiDAR and quantum technology.
Photonic integrated ultra-broadband nonlinear optical amplifiers and quantum light sources (PHOTONS)
The project focuses on utilizing advanced materials and nanotechnology to develop new optical amplifiers and light sources. These developments are designed to enhance next-generation telecommunications, advanced sensors, and quantum technologies.
ExpLoring Lithium tantalate on Insulator PhoTonic Integrated Circuits
The ELLIPTIC project is pioneering the development of a new photonic material platform, thin film lithium tantalate and will develop groundbreaking photonic integrated circuits for communications, quantum transduction and frequency-comb generation.