# Variational and Optimization

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Parametrized circuits and variational algorithms: ansatz assembly, the measurement-circuit families for VQE/QAOA, DQI decoding, and Jordan gradient estimation. The classical optimizer is chosen by the application layer; this category provides the quantum-side building blocks. Entries come from the `oracq.algorithms.optimization` subpackage.

```{toctree}
:maxdepth: 1

../variational-ansatz
../vqe
../qaoa-maxcut
../dqi
../jordan-gradient
```