qiskit/releasenotes/notes/0.18/evolved-op-ansatz-9165704a9...

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---
features:
- |
Added a new class, :class:`~qiskit.circuit.library.EvolvedOperatorAnsatz`,
to the :mod:`qiskit.circuit.library` module. This library circuit, which
had previously been located in
`Qiskit Nature <https://qiskit.org/documentation/nature/>`__ , can be used
to construct ansatz circuits that consist of time-evolved operators, where
the evolution time is a variational parameter. Examples of such ansatz
circuits include ``UCCSD`` class in the ``chemistry`` module of
Qiskit Nature or the :class:`~qiskit.circuit.library.QAOAAnsatz` class.