# Amplitude-Damping Noise Now Joins the Classically Simulable Column for IQP Circuits

- slug: amplitude-damping-noise-now-joins-the-classically-simulable-column-for-iqp-circuits
- date: 2026-04-08
- category: Quantum Computing

IQP circuits with amplitude-damping noise can now be classically simulated in polynomial time. That sounds like a quantum killer. It is not — but it narrows the gap between what classical algorithms can spoof and what quantum hardware needs to do to stay ahead.

---