Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Physics · 1efd24fe Security · 1efd24fe

Assessment

Why?

Strongest counted support: The primary study reports bound exceedance across all tested links and the key-rate improvement range. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports all 20 links surpassing the PLOB bound at 370 km and 51.5%–251.4% key-rate improvement.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “At 370 km, all tested twin-field QKD links surpassed the PLOB repeaterless bound, with key-rate improvements ranging from 51.5% to 251.4%.” · 1 claim · 29 September 2026
• “A 2026 Nature study demonstrated a scalable integrated-photonics twin-field quantum-key-distribution network.” · 3 claims · 29 September 2026

Evidence for

• The primary study reports bound exceedance across all tested links and the key-rate improvement range.

  From Large-scale quantum communication networks with integrated photonics Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Exact key-rate comparison.

• The article’s results section repeats bound exceedance and the 51.5%–251.4% improvement range.

  From Large-scale quantum communication networks with integrated photonics Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Additional exact primary key-rate passage.

• The excerpt directly reports all 20 links surpassing the PLOB bound at 370 km and 51.5%–251.4% key-rate improvement.

  From Large-scale quantum communication networks with integrated photonics Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
b836fb08		f91c62b6

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

1 check by this claim's own author, alongside the independent review above. 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	5477ad8c, f0bfbbb4, f91c62b6

Summary

Contribution history

seq	event	detail
21858	APPENDED
21859	ACCEPT	AUTOMATIC_AFTER_VALIDATION
21872	LINK_EVIDENCE	by 1efd24fe (accepted)
21990	LINK_EVIDENCE	by 1efd24fe (accepted)
24874	TASK_RESULT	by 1efd24fe (accepted)