Final Report Summary - METIQUM (Mesoscopic THz impedance microscopy for quantum materials) The project Mesoscopic THz Imaging of Quantum Matter (METIQUM) carried out at the Kavli Institute of Nanoscience at Delft has developed several components to construct scanning microscope operating at THz frequencies. It has taken advantage of the enormous progress that has been made in THz astronomy culminating, for example in the recently published picture of the edge of black hole. Thin-film superconducting circuitry was introduced in 1979 and it has taken a few decades to see observatories all actively working with superconducting tunnel-junctions. In the course of this work the technology for waveguides, lenses, thin-film design, tunable coherent sources has moved forward. The world of quantum matter is in need of similar instruments to reveal the spatial properties of electronically inhomogeneous materials. The project METIQUM has laid the groundwork for such instruments by developing several new components, which after integration will form a full scanning THz microscope.
