Add QPY serialization for PauliEvolutionGate (backport #7374) #7382
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* WIP: Add qpy serialization for PauliEvolutionGate This commit adds serialization for the PauliEvolutionGate class so that we can exactly reproduce a PauliEvolutionGate over QPY. This works by bumping the qpy format version and adding new structs to represent the PauliEvolutionGate and all it's child attribute types. * Fix handling of operator in PauliEvolutionGate This commit fixes the handling of the operator attribute in the PauliEvolutionGate. With this commit we can serialize a PauliEvolutionGate correctly with the exception of it's synthesis class which still needs to be supported. * settings for synth * Add support for custom synthesis classes * Expand test coverage * Add release notes * Update release note * fix param binding in PauliEvo * allow time as an int * Apply suggestions from code review Co-authored-by: Jake Lishman <jake@binhbar.com> * Update qiskit/circuit/qpy_serialization.py Co-authored-by: Jake Lishman <jake@binhbar.com> * Update qiskit/circuit/qpy_serialization.py * Rerun with latest black * Close buffers when finished * Fix release note wording * Fix lint * Adjust tests around extra layer of gates Co-authored-by: Julien Gacon <gaconju@gmail.com> Co-authored-by: Jake Lishman <jake@binhbar.com> (cherry picked from commit 9af5ca1)
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Changelog: Bugfix
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This is an automatic backport of pull request #7374 done by Mergify.
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