Scalable logical qubits
Researchers have introduced a formal definition of a 'scalable logical qubit' intended to make progress in error-corrected quantum computing measurable and comparable across platforms. The definition is proposed to help evaluate logical qubits for utility-scale algorithms where physical error rates alone are insufficient. The work appears as an arXiv preprint.
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What this could mean
- 0–2 yearsPlausible
A shared definition of scalable logical qubits could enable the first meaningful cross-platform benchmarks of logical qubit performance within two years, helping hardware teams compare logical error rates and qubit overheads across superconducting, trapped-ion, and neutral-atom systems.
Without a common definition, reported logical qubit results use different metrics, making progress hard to compare. A formal definition gives experimental groups a common target for evaluating logical error rates, qubit overhead, and fault-tolerant thresholds. Adoption by major hardware groups in near-term demonstrations is plausible because the field already lacks standardized comparison tools.
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