Fix global phase update in BasisTranslator Pass
#14078
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* add missing branch for global phase update in basis_translator * Adding test * reno (cherry picked from commit d67c818) # Conflicts: # crates/accelerate/src/basis/basis_translator/mod.rs # test/python/transpiler/test_basis_translator.py
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* add missing branch for global phase update in basis_translator * Adding test * reno (cherry picked from commit d67c818) # Conflicts: # crates/accelerate/src/basis/basis_translator/mod.rs
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…14092) * Fix global phase update in `BasisTranslator` Pass (#14078) * add missing branch for global phase update in basis_translator * Adding test * reno (cherry picked from commit d67c818) # Conflicts: # crates/accelerate/src/basis/basis_translator/mod.rs * Fix: Add missing py token in `add_global_phase`. --------- Co-authored-by: Alexander Ivrii <alexi@il.ibm.com> Co-authored-by: Raynel Sanchez <raynelfss@hotmail.com>
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…14091) * Fix global phase update in `BasisTranslator` Pass (#14078) * add missing branch for global phase update in basis_translator * Adding test * reno (cherry picked from commit d67c818) # Conflicts: # crates/accelerate/src/basis/basis_translator/mod.rs # test/python/transpiler/test_basis_translator.py * Fix: Add py token to `add_global_phase` * Update test_basis_translator.py * Fix: Use `new_bound` methods. --------- Co-authored-by: Alexander Ivrii <alexi@il.ibm.com> Co-authored-by: Raynel Sanchez <raynelfss@hotmail.com> Co-authored-by: Elena Peña Tapia <57907331+ElePT@users.noreply.github.com> Co-authored-by: Raynel Sanchez <87539502+raynelfss@users.noreply.github.com>
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Summary
Fixes #14074.
The
basis_translatorpass was not always updating the DAG's global phase as a part ofreplace_node: this was only done when the target dag's global phase matchedParam::ParameterExpression. Updating the global phase in the case ofParam::Floatwas missing, and this is fixed now.I am somewhat unsure if we also need to handle the
Param::Objcase. I don't understand in what kind of a circuit we would see this, and I don't believe it's even supported, as perdag_circuit.rs.add_global_phase, which throws an error in the case ofParam::Obj. Update: @jakelishman confirmed thatParam::Objis never permitted inglobal_phase.Update: added release notes.