Figure 3.

Dynamical localization in an electronic dimer. (a) At t = 0 light excites a fully delocalized electronic state. (b) The interaction with the phonon modes induces relaxation and dephasing, and the steady state of the system corresponds to a statistical mixture of electronic states. In the strong electronic coupling regime (i) the system is in a mixture of the fully delocalized excited states that diagonalize the electronic Hamiltonian (equation (2.1)). Otherwise (ii), the environment induces dynamical localization such that the excited states that diagonalize the density matrix in the steady state are more localized than the electronic eigenstates.