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What counts as progress?
A useful quantum headline needs a task, evidence and a limit. Here are three ways to read one.
One concept
A logical qubit uses encoded information and error checks. More physical qubits alone do not tell you how reliable it is.
Learn about error correction →
One dated result
The Willow memory result illustrates suppression of logical errors under stated experimental conditions.
Read the result and its limits →
One business question
Does a company's report identify quantum revenue, or only company-wide totals? Read the period, scope and cash flow before drawing conclusions.
Three original references
- The 9-qubit Shor code
- Quantum error correction below the surface code threshold
- Quantum computing research
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