Germany's first cryogenic measuring setup for statistical quality measurement of qubit devices on whole 200- and 300-mm wafers has started operation at Fraunhofer IAF. The on-wafer prober can characterize devices based on semiconductor quantum dots and quantum wells as well as superconductors at measurement temperatures below 2 K.
The data sets obtained significantly reduce the dependence on random hits, which is characteristic for single measurements. In this way, the increase in measurement capacities at the institute contributes to the development of reliable production of high-quality qubits that can be used in quantum computers and quantum sensors.
"With the on-wafer prober we gain new and unique capabilities in cryogenic characterization nationwide," emphasizes Prof. Dr. Rüdiger Quay, KryoproPlus project coordinator and acting institute director of Fraunhofer IAF."With this system, we will support our partners from research and industry in establishing a European supply chain for materials andfor solid-state qubits.
"We want to better understand how to get good, homogeneous qubits to enable scaling and industrial production of qubits in Germany and Europe," Komerički adds."To do that, it is necessary to expand the qualitative view to include a quantitative, statistical perspective on device behavior."
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