Standard QAOA doesn't enforce problem constraints. Most solutions to constrained problems like TSP are invalid. GuardGate catches these before deployment.
Noisy hardware causes circuits to collapse to trivial solutions. Without validation, these invalid results get deployed to production.
Major quantum platforms ship QAOA tools but no post-execution validation. GuardGate fills this critical gap.
No. GuardGate is a read-only validation layer. It evaluates results after QAOA runs, not during.
ABORT = solution is invalid (violates hard constraints). Cannot be used. WARN = solution is valid but low confidence. User decides whether to use or retry.
GuardGate validates solution feasibility and quality against configurable policy inputs. Specific checks depend on problem type and deployment requirements.
GuardGate complements constraint-aware QAOA. Even well-designed circuits can produce invalid solutions due to noise. GuardGate is the final safety check.
Validated on IBM Fez (156q) + Rigetti Ankaa-3 (82q), Feb 11 2026. QAOA MaxCut (K6, K10) at depths 1-3. IBM: 6K shots, E[AR] 0.70-0.85. Rigetti: 6K shots, E[AR] 0.81-0.89. All 12 best-bitstrings hit optimal cut across both vendors. Zero false positives.
Demo simulation uses noise models calibrated to real hardware characteristics.
Quality policy inputs are configurable per deployment.