TRR 142 - Effect of extended and point defects on the ferroelectric and optical properties of LiNbO3 (B03)
The aim of this project is a deeper understanding of the effect of point defects and extended defects on the functional properties of periodically poled waveguide structures. Using a combined approach of theory and experiment, the influence of lattice defects on the optical properties of waveguides (refractive index change, photorefractive index, ...
Duration: 04/2014 - 12/2017
Funded by: DFG
TRR 142 - Ab initio theory for photonic materials (B04)
In this project, we develop computational methods and perform calculations that aim at the parameter-free modeling of the photonic materials studied in the CRC with predictive accuracy. Particular attention is paid to the nonlinear optical response. The influence of electronic many-body effects, electron-phonon coupling and spin-orbit coupling is ...
Duration: 04/2014 - 03/2021
Funded by: DFG
TTR 142 - Integrated SU(1,1) interferometers (C02)
The primary goal of this project phase is to develop LiNbO3 based integrated circuits for quantum metrology applications. Based on LiNbO3-tool box components developed in the first phase of the project, we plan to develop integrated non-linear SU(1,1) interferometers in different configurations. Such interferometers are a very promising tool for ...
Duration: 04/2014 - 12/2021
Funded by: DFG
TRR 142 - Nonlinear optics in quantum dot molecules (C03)
In this project, nonlinear optical effects in InGaAs quantum dot molecules (QPM) are investigated. The goal is to use the QPM as a frequency converter. To this end, absorbed photons excite an exciton complex, which is transformed into another complex by applied voltage pulses on nanosecond and picosecond time scales as charges are transferred ...
Duration: 04/2014 - 12/2018
Funded by: DFG
TRR 142 - Ultrafast electric control of optical polarizations and transitions (C04)
The goal of this project is the development of photonic devices with nonlinear functionalities that can be controlled by electric means. The new functional structures involve an ultrafast electronic circuit which drives a single quantum dot in a microresonator. By ultrafast Stark effect tuning we will attain coherent control over the exciton and ...
Duration: 04/2014 - 12/2021
Funded by: DFG
TRR 142 - Molecular beam epitaxy of tailored GaAs-based heterostructures (Z01)
This scientific service project provides the following GaAs-based samples for other projects within TRR: Heterostructures with embedded (In,Ga)As quantum dots with tailored emission and biexciton binding energies. Schottky diodes containing quantum dot molecules. Planar GaAs/AlAs-based resonator structures with integrated quantum wells. ...
Duration: 04/2014 - 12/2017
Funded by: DFG
SPP 1736 - Distributed Data Streams in Dynamic Environments (Subproject)
Duration: 04/2014 - 12/2021
Funded by: DFG
Contact: Prof. Dr. Friedhelm Meyer auf der Heide, Dr. Manuel Malatyali
Securing the Financial Cloud
Ein wichtiger Bestandteil einer sicheren Cloudarchitektur für Finanzdienstleistungen ist die Zugriffskontrolle auf sensible Daten. Diese soll innerhalb des Projekts möglichst durch attributbasierte Verschlüsselung realisiert werden. Hier können mit Hilfe von Attributen und Policies komplexe Zugriffsstrukturen direkt in dem Verschlüsselungsverfahren ...
Duration: 03/2014 - 09/2017
Funded by: BMBF
Contact: Prof. Dr. Stefan Sauer
TRR 142- Central Tasks (Z02)
Coordination of central tasks
Duration: 01/2014 - 12/2025
Funded by: DFG
Wave Interaction in Photonic Integrated Circuits
Miniaturized optical systems on photonic chips play an essential role in the growth of global telecommunications, or for the realization of compact high-performance sensors for environmental, chemical, biological, or medical purposes. The components of these systems exploit the varying propagation behaviour that light waves exhibit when travelling ...
Duration: 01/2014 - 12/2017
Funded by: DFG