TRR 142 - Compact high performance photon pair source using ultrafast hybrid modulators based on CMOS and LNOI (C11*)
The project aims to study and demonstrate miniaturized sources of decorrelated photon pairs with high repetition rate. The goal will be achieved by jointly integrating high-bandwidth electro-optic modulators, and a specifically tailored parametric down-conversion (PDC) section, both in a lithium-niobate-on-insulator (LNOI) platform. To obtain ...
Duration: 01/2022 - 12/2025
Contact: Christian Kress, M.Sc.
TRR 142 - On-demand ideal photon pair generation for entanglement swapping at telecom frequencies (C09*)
The goal of this project is the demonstration of on-demand ideal photon pair generation for entanglement swapping at telecom frequencies employing quantum dots embedded in circular Bragg grating cavities. The InAs quantum dots in an InxGayAl1-x-yAs-matrix are grown by molecular beam epitaxy and the circular Bragg grating cavity will allow to tune ...
Duration: 01/2022 - 12/2025
TRR 142 - Cavity-enhanced spontaneous parametric down-conversion with temporal filtering using integrated superconducting detectors (C07*)
In this project, we will study the parametric down-conversion in a cavity with integrated superconducting detectors under cryogenic conditions. By using ultrafast driving electronics, we will implement pump filtering in the time domain, by enabling the integrated detector only after the pump has decayed away. The herald photon remains resonant with ...
Duration: 01/2022 - 12/2025
TRR 142 - Three-photon state generation with on-chip pump suppression in topological waveguides (A09*)
In this project, we experimentally and theoretically study a degenerate four-wave mixing source for the generation of three-photon states, where the photons are generated inside the topological mode and propagate away from the interaction region. The design using topological protected surface modes intrinsically provides a strong suppression of the ...
Duration: 01/2022 - 12/2025
TRR 142 - Quasi-bound states in the continuum for efficient second harmonic generation and spatial phase tailoring in GaAs metasurfaces (B09*)
In this project, we aim at exploiting highly efficient quasi-bound states in the continuum for optical modes in GaAs nanoresonators. The strong field confinement of these modes will be utilized to tailor the phase and emission patterns of light generated by nonlinear optical processes and to increase the efficiency of light-matter interaction in ...
Duration: 01/2022 - 12/2025
TRR 142 - Hybrid lithium niobate on insulator quantum photonic integrated circuit (C08*)
In this project, we will explore thin-film lithium niobate on insulator (LNOI) as the material platform for quantum photonic integrated circuits. After transfer printing of cavity coupled InAs quantum dots onto a LNOI circuit, we will on-chip frequency convert the on-demand generated photons from the quantum dot using a periodically poled LNOI ...
Duration: 01/2022 - 12/2025
TRR 142 - Generation and characterization of quantum light in nonlinear systems: A theoretical analysis (C10*)
We develop novel approaches based on integro-differential equations and quantum-channel descriptions for the tailored generation of nonclassical light and its propagation in structured media. By devising a multilinear process matrix formalism and accounting for complex dispersion in photonic crystals, we characterize quantum properties of light. ...
Duration: 01/2022 - 12/2025
Messplatz zur neurowissenschaftlichen Trainingsanalyse
Zur Kraft und Koordination der menschlichen Bewegung und deren Training zur Wiederherstellung von Gesundheit (nach z.B. Sportverletzungen) und der Entwicklung von (sportlicher) Leistung gibt es erstaunlich wenig Evidenz aus einer neurophysiologischen Perspektive. Der Messplatz zur neurowissenschaftlichen Trainingsanalyse soll helfen, durch ...
Duration: 01/2022 - 12/2022
SPP 2314 - MLL-based Integrated THz Frequency Synthesizers (MINTS)
In the project MINTS it is planned to investigate and demonstrate electronic-photonic THz frequency synthesizer architectures which conform to the requirements of integration in silicon photonics (SiPh) and/or Indium Phosphite (InP) photonic technology. Building on the excellent spectral properties of mode-locked lasers (MLL) it is the target to ...
Duration: 01/2022 - 12/2024
Contact: Meysam Bahmanian, Vijayalakshmi Surendranath Shroff, M.Sc.
FOR 5208 - Modelling and simulation of the coupled acoustic, electrical, and thermal dynamics of piezoceramics
The determination of material parameters of piezoceramics for actuator applications by means of an inverse method requires an efficient method for the simulation of the different physical processes in the piezoceramic sample. In addition to the electrostatic equations and acoustic wave propagation, this project focuses on the causal description of ...
Duration: 01/2022 - 12/2025