RF Calibration at Cryogenic Temperatures: A New Measurement Paradigm for Quantum Technologies

Accurate RF measurements at cryogenic temperatures are a critical bottleneck in scaling quantum hardware from research to production. We present a RF calibration methodology leveraging MEMS switching technology to enable traceable, repeatable RF measurements from room temperature to millikelvin environments. By integrating internal calibration standards and shifting measurement reference planes directly to the inaccessible cryogenic ports, this approach eliminates repeated manual recalibration, reduces cryostat downtime, and improves measurement repeatability across cooldowns. This translates to faster time to data, higher measurement throughput, and easier access to calibrated measurements at cryogenic temperatures. The quantum industry can expect accelerated development and a practical path from lab-based experimentation toward scalable, production-ready quantum RF test infrastructure.