TRR 142 - To nlinear spectroscopy of semiconductor nanostructures with quantum light (A02)
In this project, we will experimentally and theoretically study transient optical wave-mixing signals of semiconductor nanostructures under resonant excitation with pulsed quantum light. Quantum state tomography of the detected optical signals will provide essential information about the excitation of excitons with quantum light and will allow us ...
Duration: 04/2014 - 12/2025
Funded by: DFG
TRR 142 - Cavity enhanced two-photon physics with semiconductor quantum dots (A03)
This project is focused on two-photon processes in semiconductor microcavities with embedded quantum dots. The project work will be concentrated on the down-conversion from the biexciton state via an optically induced virtual state which leads to a cavity enhanced single photon emission. Our joint theoretical and experimental quantum optical study ...
Duration: 04/2014 - 12/2021
Funded by: DFG
TRR 142 - Nonlinear quantum process tomography and photonics of microcavity polaritons (A04)
In this project, we set out to realize a complete description of nonlinear quantum processes involving microcavity polaritons. Such a description is given by a process matrix that maps every possible input state fed to the system to its corresponding output state. To construct this matrix, we will combine advanced spectroscopic techniques and ...
Duration: 04/2014 - 12/2025
Funded by: DFG
TRR 142 - Plasmonic nano-antenna enhanced nonlinear light emission and frequency conversion in dielectric and semiconductor micro-structures (A05)
The project deals with the enhancement of the weak light-matter interaction for nonlinear optical processes. Resonant excitation of coherent electron oscillations in metallic nanostructures can lead to strong field enhancements due to an antenna effect for the photons. With a suitable spatial arrangement of such antennas, even a kind of phase ...
Duration: 04/2014 - 12/2018
Funded by: DFG
TRR 142 - Tailored ultrafast acoustics for light emission modulation (A06)
The interaction of coherent acoustic phonons and excitons in low-dimensional semiconductor structures is in the focus of this project proposal. In the experiments, picosecond strain pulses are sent through the nanostructure. The response on the ultrafast acoustic impact is monitored through the light emission and tailored by nanoscale adjustment of ...
Duration: 04/2014 - 12/2025
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 m?glichst durch attributbasierte Verschlüsselung realisiert werden. Hier k?nnen 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 - Engineered frequency conversion devices (C01)
In this project, we aim to fabricate integrated frequency conversion devices tailored for spectral-temporal manipulation and detection of quantum light emitted from semiconductor structures. The frequency converters will be developed on a lithium niobate platform and we will target for high-performance plug-and-play devices with fiber pigtailed ...
Duration: 01/2014 - 12/2021
Funded by: DFG
TRR 142- Central Tasks (Z02)
Coordination of central tasks
Duration: 01/2014 - 12/2025
Funded by: DFG