University of Sydney and IBM Quantify Mid-Circuit Measurement Bottlenecks to Advance Fault-Tolerant Logic - Quantum Computing Report

A joint research collaboration between the University of Sydney Nano Institute and IBM Quantum has identified, isolated, and mitigated a major hardware engineering bottleneck hindering Fault-Tolerant Quantum Computing (FTQC). Published in Nature Communications by lead author Dr. Robin Harper and project lead Professor Stephen Bartlett, the study provides the first comprehensive quantitative benchmark of errors introduced directly by mid-circuit measurements (MCMs). The international project—co-funded by the U.S. government’s Intelligence Advanced Research Projects Activity (IARPA)—demonstrates an architectural workaround that dramatically suppresses localized noise, establishing a clearer pathway toward scalable quantum error correction (QEC). Quantum error correction requires a subset of physical qubits [...]

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