The quantum field as a quantum computer

► q-Computational approach to quantum field theory, the Wheelerʼs “It from Bit”. ► Dirac derived as free flow of information, without requiring Lorentz covariance. ► Info-interpretation of inertial mass and h¯ and field Hamiltonian derived from gates. ► Violation of dispersion relation as mass-dependent vacuum refraction index. ► Fermi anticommuting fields substituted by qubits.