  In this work we study the Tomita-Takesaki construction for a family of
excited states that, in a strongly coupled CFT - at large $N$-, correspond to
coherent states in an asymptotically AdS spacetime geometry. We compute the
modular flow and modular Hamiltonian associated to these excited states in the
Rindler wedge and for a ball shaped entangling surface. Using holography, one
can compute the bulk modular flow and construct the Tomita-Takesaki theory for
these cases. We also discuss generalizations of the entanglement regions in the
bulk and how to estimate the modular Hamiltonian in a large N approximation.
Finally we present a holographic formula, based on the BDHM prescription, to
compute the modular evolution of operators in the corresponding CFT algebra.
