University of Sydney and IBM Identify Major Source of Quantum Computing Errors

Insider Brief

Researchers from the University of Sydney and IBM have identified key sources of error in quantum computations, particularly those arising from mid-circuit measurements in superconducting quantum systems.

Using a 156-qubit IBM Quantum Heron processor, the team showed that measurement-induced idling noise is a major limiting factor and improved logical qubit survival rates from below 90% to over 96% per error-correction cycle.

The study is based on University of Sydney research materials and published in Nature Communications.

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.