Similarly for the spin angular momentum L = 1 ω ω E c ( | ψ ψ R | 2 − − | ψ ψ L | 2 ) = N ℏ ℏ V ( | ψ ψ R | 2 − − | ψ ψ L | 2 ) where E c is field strength. This implies that the spin angular momentum of the photon is l z = ℏ ℏ ( | ψ ψ R | 2 − − | ψ ψ L | 2 ) . the quantum interpretation of this expression is that the photon has a probability of ∣ ∣ ψ ψ R ∣ ∣ 2 of having a spin angular momentum of ℏ ℏ and a probability of ∣ ∣ ψ ψ L ∣ ∣ 2 of having a spin angular momentum of − − ℏ ℏ . We can therefore think of the spin angular momentum of the photon being quantized as well as the energy. The angular momentum of classical light has been verified. A photon that is linearly polarized (plane polarized) is in a superposition of equal amounts of the left-handed and right-handed states.