**About the Editors**

**Albert Ferrando**, Full Professor, was born in Valencia, Spain, in 1963. He received the Licenciado ` en F´ısica, and M.S. and Ph.D. degrees in Theoretical Physics from the Universitat de Valencia (UV), ` Burjassot, Spain, in 1985, 1986, and 1991, respectively. In 1996, he joined the Departament d'Optica, ` UV, as Assistant Professor, became an Associate Professor in 2001, and Full Professor in 2011. He has developed his research in the areas of theoretical particle and condensed matter physics, optics, and microwave theory. His more recent research interests lie mainly in the electromagnetic propagation in optical waveguides, fibers, and photonic devices. The basic research interests include nonlinear optical effects in new photonic materials, quantum and mean-field effects in ultra-cold atoms, and mathematical tools for singular optics and topological photonics. His applied research includes the development of nonlinear active and passive photonic devices and the implementation of new strategies for the control of phase singularities.

**Miguel Angel Garc´ ´ ıa-March**, Investigador Distinguido Beatriz Galindo, was born in Reus, Spain, in 1976. He received his degree in Economics from the University of Valencia in 1998. He completed his degree in Engineering as well as M.S. and Ph.D. degrees, both in Mathematical Physics, from Polytechnic University of Valencia in 2003, 2005, and 2008, respectively. He received a MEC/Fulbright two-year grant in 2009, which he held at the Colorado School of Mines. He successively held postdoctoral positions at the University College Cork (Ireland) and University of Barcelona (Spain). Between 2014 and 2019, he was Research Fellow in the Group of Maciej Lewenstein in ICFO—The Institute of Photonic Sciences. He joined the Department of Applied Mathematics of the Polytechnic University of Valencia in 2019. He has developed research in nonlinear, singular, and quantum optics; ultracold atoms; complex classical systems; and open quantum systems.
