  The multiphoton coherent states, a generalization to coherent sates, are
derived for electrons in bilayer graphene placed in a constant homogeneous
magnetic field which is orthogonal to the bilayer surface. For that purpose a
generalized annihilation operator is constructed in order to determine the
multiphoton coherent states as eigenstates of such operator with complex
eigenvalue. In addition, some physical quantities are calculated for these
states, as the Heisenberg uncertainty relation, probability density and mean
energy value. Finally, in order to study the dynamics of the system the time
evolution is explored and the time-correlation function is computed.
