mirror of https://github.com/Qiskit/qiskit.git
31 lines
1.6 KiB
YAML
31 lines
1.6 KiB
YAML
---
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features_circuits:
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Added support for :meth:`.AnnotatedOperation.params` and
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:meth:`.AnnotatedOperation.validate_parameter`, which enable
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circuit-level parameter handling (such as binding parameters) for
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annotated operations.
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fixes:
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Fixed a series of issues when controlling parameterized standard gates.
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The controlled version of some gates (e.g. :class:`.RXXGate` or
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:class:`.RYGate` for more than 1 control) cannot be synthesized if
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they contain unbound parameters. Previously, calling ``.control()`` but
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now we create an :class:`.AnnotatedOperation` as placeholder. This
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allows to insert the controlled gate into a circuit, bind the parameters
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at a later stage, and then synthesize the operation.
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Fixes `#10311 <https://github.com/Qiskit/qiskit/issues/10311>`_,
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`#10697 <https://github.com/Qiskit/qiskit/issues/10697>`_,
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and `#12135 <https://github.com/Qiskit/qiskit/issues/12135>`_.
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The :class:`.SGate` and :class:`.SdgGate` now correctly return a
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:class:`.CSGate`, resp. :class:`.CSdgGate`, if they are controlled on
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a single control qubit.
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upgrade_circuits:
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The ``annotated`` argument of the :meth:`.Gate.control` method is now
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``None``, which allows Qiskit to choose whether to annotate a controlled operation.
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If the concrete implementation (``annotated=False``) is available, it will be returned by
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default. Otherwise, the annotated implementation will be returned (``annotated=True``).
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This allows, for example, to defer the synthesis of controlled, parameterized gates.
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