arxivquant-phcs.AIcs.ET2026-07-14
When Close Enough Is Not Enough: Autoregressive Drift in Quantum Circuit Synthesis
Mehdi Saeedi, Eddie Richter, Paul Hartke
Quantum circuit optimization for fault-tolerant computing requires exact functional equivalence while minimizing expensive non-Clifford resources such as T gates. We study this problem using a compact 44.8M-parameter encoder-decoder transformer with structured circuit tokenizatio…