  We discuss the possibility of generating spin squeezed states by means of
driven superradiance, analytically affirming and broadening the finding in
[Phys. Rev. Lett. 110, 080502 (2013)]. In an earlier paper [Phys. Rev. Lett.
112, 140402 (2014)] the authors determined that spontaneous purely-dissipative
Dicke model superradiance failed to generate any entanglement over the course
of the system's time evolution. In this article we show that by adding a
driving field, however, the Dicke model system can be tuned to evolve toward an
entangled steady state. We discuss how to optimize the driving frequency to
maximize the entanglement. We show that the resulting entanglement is fairly
strong, in that it leads to spin squeezing.
