qiskit-aer/releasenotes/notes/0.8/fix-stabilizer-expval-8649e...

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---
fixes:
- |
Fixes a bug in the ``stabilizer`` simulator method of the
:class:`~qiskit.providers.aer.QasmSimulator` and
:class:`~qiskit.providers.aer.AerSimulator` where the expectation value
for the ``save_expectation_value`` and ``snapshot_expectation_value``
could have the wrong sign for certain ``Y`` Pauli's.