Projects
The PhoQS is characterised by its interdisciplinary structure and the close cooperation of numerous specialised working groups. This diversity makes it possible to work on projects from a wide range of research and application fields. The focus is on innovative approaches that combine basic research and applied sciences.
Depending on the issue and objective, PhoQS integrates expertise from the fields of physics, electrical engineering, computer science and mathematics in order to tackle complex challenges and develop new solutions.
Funding organisations
PhoQS member projects
PhoQS project: Modelling and Optimization of Photonic Wirebonds
High-quality photonic interconnects enable technological advances, both in optical data transmission and in quantum research projects. In this research project, optical broadband coupling methods will be investigated. A nano-precise 3D printer can be used to fabricate structures for photonic interfaces. Important work packages of this project ...
Duration: 09/2023 - 12/2024
Contact: Christian Kress, M.Sc., Martin Miroslavov Mihaylov, M.Sc.
PhoQS project: Quantum photonic systems in silicon nitride technology
In this research project, the feasibility of integration of quantum optic components, which are used in photonic quantum computers and sensors, in commercially available silicon nitride technology is investigated.Silicon nitride is widely used in highly integrated CMOS technologies and therefore, it allows mass production of photonic components ...
Duration: 07/2023 - 12/2024
Contact: Tobias Schwabe, M.Sc.
LINQs: Lithium Niobate Quantum Systems - ERC Starting Grant
Quantum technologies are expected to have a transformative impact by exploiting fundamental quantum mechanical effects for technological applications such as quantum computation, quantum simulation, quantum communication, and quantum sensing. Photons are the only reliable qubit for quantum information transmission, making them an essential resource ...
Duration: 09/2022 - 08/2027
Contact: Prof. Dr. Klaus Jöns
ERC- Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications
Optical measurements are fundamental to experimental science and observations of nature. At the single photon level, superconducting nanowire single-photon detectors (SNSPDs) are well-established as the gold standard in measurement, due to their near-unit efficiency, negligible noise and ultrafast response. Building SNSPD arrays and simultaneously ...
Duration: 09/2022 - 08/2027
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 - 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 - 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
