Cryogenic Josephson Kerr Device for wiring characterization

Quantum-limited microwave calibration tool for cyrogenic wiring

Poor microwave wiring in dilution refrigerators introduces losses and noise that reduce qubit coherence times. The validation of new wiring solutions for quantum applications often relies on the use of solid state qubits themselves, where a direct comparison of qubit metrics is made between known and to-be-tested wiring solutions. However, such experiments are notorious for yielding inconclusive results. The need arises for a qubit-independent characterization tool that can directly measure the relevant performance metrics of the wiring such as attenuation, added thermal noise, and thermalization.

Combing theory and experimental validation

The Cryo-JoKerr project combines TNO's expertise in the development of microwave components with Delft Circuits' leading capabilities in advanced wiring solutions for dilution refrigerators. Together, the partners aim to establish a scalable framework for the systematic characterization of cryogenic wiring in large-scale quantum computing systems.

Strengthening the Dutch quantum technology position

The Cryo-JoKerr project contributes directly, by addressing a key technological bottleneck in scalable quantum computing hardware. As such, the project strengthens the technological foundation of the Dutch quantum ecosystem and enhances the international competitiveness of the Netherlands in the rapidly growing global quantum technology market.