↳ CAF WATCHER // CONTINUOUS PHYSICAL AUDIT LEDGER

IBM Quantum (Quantum System Two) Grade A

The ultimate cryogenic building as computer: 15 millikelvin dilution refrigerators and hybrid quantum-HPC data centers · Category: Quantum & Cryogenic Compute

Executive Physical Feasibility & Delivery Audit

Institutional Baseline: CAF Watcher evaluates stated accelerator capabilities against empirical physical reality (interconnection queues, electrical substations, liquid cooling heat transfer, and optical network fabrics). Missing public evidence is classified as unknown—it is never treated as zero capacity. Operator telemetry strengthens assessments, but participation is never mandatory.

CAF INTERVAL
[0.57 – 0.91]
DELIVERY GAP SCORE
24 pts
OPERATING POWER
0.05 GW
vs 0.1 GW announced
EVIDENCE CONFIDENCE
MEDIUM (65%)

Physical Coupling Pillars

Power & Grid Substrate (E): 92/100. While the quantum processor itself consumes negligible milliwatts, the external cryogenic pulse-tube compressors, microwave controllers, and classical error-correction servers draw ~25 kW per system.
Thermal Dissipation & CDU Limits (T): 96/100. Achieves 15 mK via a closed-cycle helium-3/helium-4 dilution process across 6 distinct temperature stages (50K, 3K, 800mK, 100mK, 15mK).
Cluster Topology & Optical Fabric (N): 93/100. System Two connects multiple cryogenic units together with cryogenic vacuum interconnect links, allowing quantum processors to communicate across cryostats.
Silicon & Advanced Packaging (O): 92/100. Heron uses multi-layer flip-chip bonding with superconducting through-silicon vias (TSVs) to route microwave lines from the back of the wafer, shielding qubits.

Attributable Public Evidence Ledger

Every claim evaluated by CAF Watcher is grounded in public regulatory filings, utility interconnection disclosures, environmental permitting reports, or peer-reviewed engineering papers.