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releasenotes/notes/mcxvchain_dirty_auxiliary-5ea4037557209f6e.yaml
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features: | ||
- | | ||
:class:`.MCXVChain` has two new Boolean parameters `relative_phase` and `action_only`. | ||
If `action_only` the circuit does not clean the dirty qubits. If `relative_phase` | ||
the gate is implemented up to a global phase. Both parameters are used to optimize the | ||
decomposition of MCXVChain. | ||
fixes: | ||
- | | ||
:class:`.MCXVChain` with k controls and k-2 dirty auxiliary qubits now requires 8k-6 cx gates. |