  I introduce a spinor field theory for the photon. The three-dimensional
vector electromagnetic field and the four-dimensional vector potential are
components of this spinor photon field. A spinor equation for the photon field
is derived from Maxwell's equations,the relations between the electromagnetic
field and the four-dimensional vector potential, and the Lorentz gauge
condition. The covariant quantization of free photon field is done, and only
transverse photons are obtained. The vacuum energy divergence does not occur in
this theory. A covariant "positive frequency" condition is introduced for
separating the photon field from its complex conjugate in the presence of the
electric current and charge.
