StreamingQEC: Streaming Quantum Error Correction in Tightly Integrated Quantum-Classical Systems via Certified Recurrence

StreamingQEC addresses the problem of modeling resource contention in hybrid quantum-classical systems during fault-tolerant quantum error correction. The method introduces a system-level simulator with explicit discrete-event simulation, an automatic staged-fluid mode for faster exploration, and a certified recurrence mechanism that compresses repeated scheduling states. Experimental evidence shows recurrence achieves a 24.0x host-side speedup while preserving 59,743,936 decoding events for a 16-job anchor workload, and the staged-fluid mode yields a mean makespan error of 2.60%. This matters because it enables system architects to evaluate resource-limited pipeline stalls and saturation under microsecond-scale QEC cycles, which is critical for designing scalable fault-tolerant quantum computers.