One could formalize the following result: for any quantum states ∣ψ⟩|\psi\rangle∣ψ⟩, ∣φ⟩|\varphi\rangle∣φ⟩, there exists a unitary matrix UUU such that U∣ψ⟩=∣φ⟩U|\psi\rangle = |\varphi\rangleU∣ψ⟩=∣φ⟩.
Last updated: Dec 07 2024 at 16:22 UTC