Problem Statement
The consortium investigates the requirements for a useful interface between entanglement-based photonic sources and QKD network nodes. Key questions include the level of indistinguishability needed for photonic wave-packets and the physical platforms that can execute the necessary quantum network interface functionalities. Bottlenecks are related to the quality and efficiency of the interface solution, leading to a precision requirements while defining the target figures of merit of this analysis, to avoid inaccurate conclusions. This study includes a comprehensive literature review on theoretical models connecting physical platform performances to integrated system specifications.
Technical Approach
TNO has developed expertise in photonic integrated circuits for quantum communications and quantum interconnects over the past years. Simultaneously, it has dedicated great attention to the topic of quantum network interconnects. This project explores the possibility of combining various quantum interfaces into a single integrated platform, merging the two fields. It includes a feasibility study based on experimentally measured data from Qunnect's entangled photon-pair source. The goal is to create a blueprint for integrating this source with the most promising QKD network nodes, based on a mathematical model that evaluates interface performance.
Expected Results
The project will generate three deliverables: a mathematical framework for the indistinguishability of photonic wave-packets, an extensive literature review, and an article for publication in a research journal. The project will also contribute to the broader vision of connecting various cities in the Netherlands via entanglement distribution and QKD nodes. This research will strengthen the Dutch position in the quantum and space sectors and provide economic and societal benefits within Europe.