3D visualization of 3-level quantum system using 3×3 Hermitian operators
⟨ψ|X|ψ⟩, ⟨ψ|Y|ψ⟩, ⟨ψ|Z|ψ⟩ expectation values
Note: This is NOT a traditional Bloch sphere (which uses 2×2 Pauli matrices)