Simplified readout technique uses multiplexed microwave tones/ streamlined amplifier chains to speed up qubit state discrimination

https://www.eurekalert.org/news-releases/1137862

"superconducting/ semiconductor qubit systems use high-power microwave lines/ bulky cryogenic amplifier chains for each readout channel, creating thermal dissipation/ wiring harness bottlenecks at scale... overcome introducing multi-tone microwave multiplexing/ low-noise parametric amplifiers, while reducing cryostat wire counts inside cryogenic refrigerators... processes multiple qubit readout signals simultaneously over single shared coax line... reduced latency, fault-tolerant quantum processors"