Flexible Superconducting Cables and Connectors for Cryogenic and Quantum Systems

Cryogenic electronics and quantum systems are of interest due to recent successes in superconducting quantum computing, as well as the promise of ultra-low-energy cryogenic/superconducting classical computing. These systems present unique challenges for scaling-up to large numbers of cables and interconnects, which often need to span multiple temperature stages, without stressing the volume and thermal constraints of the host cryogenic systems. High-density microwave-capable connectors for such systems are also needed. I will describe our efforts on superconducting microwave flexible cables and connectors made using thin-film, wafer-level fabrication techniques. This interconnect hardware shows great promise for more dense integration of future superconducting and cryogenic electronics systems.