In tribute to the memory of Sergei Akhmanov, a pioneer in the field, Frontiers in Nonlinear Optics presents an overview of quantum electronics and nonlinear optics. The contributors, world leaders in this field, provide up-to-date surveys and current trends to ensure comprehensive coverage in all aspects of nonlinear optics. This fascinating collection is necessary reading both for researchers entering the field and for established researchers in nonlinear optics.