NIST is leading a multi-laboratory effort to develop advanced radio frequency (RF) calibration techniques for quantum computing. The project aims to create precise RF measurements in cryogenic environments, which are essential for understanding, designing, and scaling microwave circuits used in quantum computers.
Key developments include:
– Developing a millikelvin vector network analyzer for on-chip probing
– Creating the world’s most sensitive microwave power sensor
– Establishing a microwave electrical-phase standard
– Building a variable-impedance load for noise calibration
These advancements will enable more sensitive and accurate measurements of quantum circuits, which is crucial for scaling quantum computers to millions of qubits. The project will also revolutionize integrated-circuit testing at cryogenic temperatures and advance measurement science.
Implementation is expected to take several years, with success requiring improvements in SQUID and parametric amplifiers for stability, dynamic range, and bandwidth. The project will also investigate new microwave power level detection techniques for extremely low power levels used in quantum computing.
Keywords: Qubits, Microwave, Calibration, Cryogenic, Sensitivity
