Quantum technologies and quantum computing offer exciting new possibilities but also pose significant challenges, including fundamental microwave metrology at cryogenic temperatures. The SuperQuant project will establish novel metrological and scientific tools for the measurement of microwave signals in circuits in-situ in cryogenic environments down to the millikelvin range using a combination of superconducting, semiconducting, integrated and conventional photonics, and plasmonic techniques. This includes, but is not limited to
•a Josephson arbitrary waveform synthesizer (JAWS) that is optically driven and enables energy- and cost-efficient generation of microwave signals at cryogenic temperatures,
•a quantum-traceable cryogenic sampling oscilloscope with an unprecedented bandwidth;
•traceable cryogenic microwave measurements;
•the development of a quantum standard of microwave power.
In this project TAU is involved in development of ultra-high speed cryogenic photodiodes. Please ask further information from Senior Scientist Jukka Viheriälä.