| # Mitigation (Zero-Noise Extrapolation) | |
| Standard error-mitigation entry points, named the way the field already names them | |
| (Richardson extrapolation, noise factors, zero-noise extrapolation), plus a density-matrix | |
| extension (physical-cone projection, Uhlmann fidelity) and a `jax.jit`-compatible variant | |
| of every entry point. | |
| ::: dense_evolution.mitigation | |
| --- | |
| **See also**: [`dense_evolution.healing`](healing.md) for the predictive-healing primitives | |
| (`calculate_delta_preemp`) the healing-adapted extrapolation branch is built on, and | |
| [`NoiseModel`](registry.md) for the Kraus-channel noise used to build the noisy ensembles | |
| these functions correct. Full worked example: [Density-matrix ZNE healing](../examples.md#density-matrix-zne-healing). | |