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release notes
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adjs authored and IsmaelCesar committed Feb 29, 2024
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10 changes: 10 additions & 0 deletions releasenotes/notes/mcxvchain_dirty_auxiliary-5ea4037557209f6e.yaml
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features:
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: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.

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