  We study the dynamics of entanglement in a 1D coupled-cavity array, each
cavity containing a two-level atom, via the Jaynes-Cummings-Hubbard (JCH)
Hamiltonian in the single-excitation sector. The model features a rich variety
of dynamical regimes that can be harnessed for entanglement control. The
protocol is based on setting an excited atom above the ground state and further
letting it evolve following the natural dynamics of the Hamiltonian. Here we
focus on the concurrence between pairs of atoms and its relation to atom-field
correlations and the structure of the array. We show that the extension and
distribution pattern of pairwise entanglement can be manipulated through a
judicious tuning of the atom-cavity coupling strength only. Our work offers a
comprehensive account over the machinery of the single-excitation JCH
Hamiltonian as well as contributes to the design of hybrid light-matter quantum
networks.

Quantum Physics