↳ CAF WATCHER // CONTINUOUS PHYSICAL AUDIT LEDGER

Google Quantum AI Grade A

Pioneering fault-tolerant superconducting quantum hardware: Sycamore and Santa Barbara cryogenic facilities · 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
[0.53 – 0.88]
DELIVERY GAP SCORE
28 pts
OPERATING POWER
0.05 GW
vs 0.1 GW announced
EVIDENCE CONFIDENCE
MEDIUM (65%)

Physical Coupling Pillars

Power & Grid Substrate (E): 90/100. Facility in Goleta uses dedicated power filtering and battery backups to ensure continuous cryogenic compression without thermal cycles.
Thermal Dissipation & CDU Limits (T): 94/100. Custom-engineered microwave attenuators thermalize incoming microwave pulses at 4K and 100mK stages to prevent room-temperature thermal photons from reaching the qubits.
Cluster Topology & Optical Fabric (N): 92/100. Cryostats are suspended from overhead steel bridge cranes in a high-bay facility, isolating them from floor vibrations and facilitating rapid servicing.
Silicon & Advanced Packaging (O): 91/100. Uses custom dual-chip architectures (qubit chip bonded to carrier chip via superconducting indium bump interconnects) to shield qubits from control wiring noise.

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.