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Quantum phase kickback

Because

X ∣ - ⟩ = - ∣ - ⟩

, a Boolean oracle with answer qubit

∣ - ⟩

acts as

U_{f} ∣ x ⟩ ∣ - ⟩ = (- 1)^{f (x)} ∣ x ⟩ ∣ - ⟩ .

Table of contents 115 3
- Bernstein-Vazirani phase kickback Quantum phase kickback 29
- Marked-state phase oracle Quantum phase kickback 68 1
  - Marked-state phase oracle from a single faulty identity-oracle query Marked-state phase oracle 53

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