Quantum Computing.
with probability close to 1. In what follows we will need the unitary transformation that doesn’t change anything. Let’s call it I. I = |000⟩⟨000| + |001⟩⟨001| + |010⟩⟨010| + |011⟩⟨011| + |100⟩⟨100| + |101⟩⟨101| + |110⟩⟨110| + |111⟩⟨111| One starts by preparing the system in the initial state