Leiden Cryogenics and Orange Quantum Systems (OrangeQS) have announced the successful completion of the Quper project, resulting in a tabletop “mini-fridge” designed for high-throughput quantum R&D. The system is a compact, inverted dilution refrigerator capable of cooling samples to below 25 millikelvin and returning them to room temperature in under 24 hours. This fast-turnaround capability is optimized for the characterization of quantum chips and components, such as Traveling Wave Parametric Amplifiers (TWPAs), which typically require lengthy cooling cycles in larger, more complex cryogenic systems.
Technically, the “mini-fridge” achieves its rapid thermal cycling through an inverted design that provides ergonomic tabletop access and a reduction in the thermal mass of all internal components. The system features integrated heat switches and a miniaturized dilution unit, allowing for operation without liquid nitrogen and with a significantly reduced helium-3 requirement compared to standard cryostats. This reduced footprint and simplified operation are intended to make millikelvin environments more accessible for industrial testing and beamline experiments where space and helium costs are critical constraints.
The hardware is managed by the OrangeQS Juice operating system, utilizing the SubZero cryogenic control software. A new back-end specifically for Leiden Cryogenics was developed within the Juice OS to enable remote monitoring, automation, and integrated control of the dilution process. Funded by Quantum Delta NL through the Dutch National Growth Fund, the Quper project bridges the gap between laboratory-scale physics and industrial-grade hardware by providing a standardized, software-driven interface for rapid cryogenic validation.
For further details on the Quper project results and cryogenic specifications, consult the official announcement from Quantum Delta NL here.
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