Quantum Computing.
basis σ_X = |1⟩⟨0|+|0⟩⟨1|, σ_Y = i|1⟩⟨0|-i|0⟩⟨1|, σ_Z = |0⟩⟨0|-|1⟩⟨1|, Clearly σ_X is swapping 0 with 1 and therefore represents a classic NOT gate. However σ_Y changes |0⟩ to |1⟩ and adds a phase of 90° to it and changes |1⟩ to |0⟩ but adds a phase of 270° to it. What logic operation could this