Superconducting devices represent one of the most advanced and promising platforms for quantum sensing, as they exploit macroscopic quantum effects to achieve unparalleled sensitivity in measurements. In particular, circuits based on Josephson junctions play a crucial role in enabling the detection of extremely weak signals, making them highly suitable for a wide range of quantum sensing applications in both applied and fundamental physics as well as metrology.
The project focuses on the development of superconducting quantum circuits tailored for quantum sensing applications, integrating existing circuit components, such as Al/AlOx/Al Josephson junctions, and introducing innovative circuits layout. By leveraging state-of-the-art fabrication techniques and advanced modelling, the project aims to design and implement novel superconducting architectures that push the boundaries of measurements in the microwave domain, targeting sensitivity and accuracy beyond the state-of-the-art.
The research activities will encompass multiple stages, starting with the design and simulations of superconducting circuits to optimise their layout and performance. This is followed by the microfabrication of the devices in the cleanroom facilities, for which dedicated microfabrication processes will be tested. Finally, the fabricated devices will undergo cryogenic characterisation measurements at mK temperatures, with a dedicated cryogenic set-up installed in a dilution refrigerator and an optimised read-out scheme.
This project aims to advance the field of quantum sensing and contribute to the development of next-generation superconducting devices with high-impact applications in fundamental physics and precision measurement.