Paving the way for nanoelectronics and superconductivity
Dilution refrigerator systems are cryogenic devices that use a mixture of helium isotopes that undergo phase separation at very low temperatures (below 700 mK). They are widely used in low-temperature research in the areas of nanoelectronics, superconductivity and superfluidity. Answering the need for decreasing the manufacture and operation cost of dilution refrigerators, the SQUBIT project designed and fabricated the innovative Ymir system. This innovation is a unique combination of the high cooling power of large dilution refrigerators with short operation time and low helium consumption. The key innovative feature of Ymir relies on its design which does not include any plastic-metal connections and therefore leaks are minimised. Extensive leak testing and cooling tests were successfully performed. The objective for the prototype was its use in quantum computing experiments planned within the context of the SQUBIT project. Apart from some fine tuning related to the impedances and the mixture, Ymir is at a final stage. Collaboration is sought for further commercialisation of the device which displays a high competitive advantage due to its low cost.
