Coherent phenomena in optics and light-matter interaction : a topical issue in memory of Federico Casagrande

This issue collects research articles and tutorials written by many colleagues and friends of Federico Casagrande to remember his enthusiasm and creativity in teaching and research. He provided important scientific contributions to the description of the dynamics of nonlinear optical systems such as, for example, optical bistability, the laser with saturable absorber, and the free electron laser. He obtained substantial results in his investigations on phenomena that arise from quantum fluctuations, in particular the first theoretical prediction of photon antibunching in optical bistability, and, in the last decade, the elucidation of special effects in the micromaser and the proposal of new schemes for entanglement transfer and storage.