Insider Brief
University of Sydney and IBM researchers identified mid-circuit measurement noise as a key barrier to reliable quantum error correction and showed that redesigned circuits can improve logical qubit performance.
Using IBM’s 156-qubit Heron r2 superconducting processor, the team increased logical qubit survival rates from below 90 percent to more than 96 percent per error-correction cycle.
The study suggests that reducing measurement-related idling noise will be an important engineering priority for scaling fault-tolerant quantum computers.
PRESS RELEASE — Researchers from the University of Sydney, working with IBM, have identified and quantified important factors limiting the performance of quantum computers and demonstrated ways to overcome their impact.
