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EVIDENCE RECORD

IBM Quantum: what changed.

The recorded research and its supporting evidence.

This is a historical record. Read the current company research →

  1. Evidence or assessment clarified · axis ratings unchanged

    Assessment reviewed 6 Sept 2026 · Research reviewed 7 Sept 2026
    What changed
    Research evidence: Processor types
    Previously

    Defines processor topology and revisions; Nighthawk r2 has 120 programmable qubits. Physical hardware elements must not be substituted for programmable-qubit capacity.

    Source title
    Processor types
    Source publication date
    Not recorded
    Source type
    Vendor technical documentation
    Marked independent
    No
    Now

    Defines processor topology and revisions. Nighthawk r2 has 120 programmable qubits; the separately reported 458 physical qubits are not its programmable circuit capacity.

    Source title
    Processor types
    Source publication date
    Not recorded
    Source type
    Vendor technical documentation
    Marked independent
    No
    Sources retained (1)
    Sources in this record (4)

Recorded dates use UTC and show when QubitWire saved the comparison. Review dates show the evidence check; neither is a new claim about when the underlying event happened. This view preserves the original research and assessment methodology.

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