Microscopic modeling of the effect of phonons on the optical properties   of solid-state emitters
  Understanding the effect of vibrations in optically active nano systems is crucial for successfully implementing applications in molecular-based electro-optical devices, quantum information communications, single photon sources, and fluorescent markers for biological measurements. Here, we present a first-principles microscopic description of the role of phonons on the isotopic shift presented in the optical emission spectrum associated to the negatively charged silicon-vacancy color center in diamond. We use the spin-boson model and estimate the electron-phonon interactions using a symmetrized molecular description of the electronic states and a force-constant model to describe molecular vibrations. Group theoretical arguments and dynamical symmetry breaking are presented in order to explain the optical properties of the zero-phonon line and the isotopic shift of the phonon sideband. 
Ariel Norambuena, Sebasti\'an A. Reyes, Jos\'e. Mej\'ia-Lop\'ez, Adam   Gali and Jer\'onimo. R. Maze
cond-mat.mtrl-sci