I was kindly invited to attend a workshop organized by my former PhD advisers and colleagues in Fresnel Institute, Marseille. Those two days (25th-26th of June) were really interesting and exciting scientifically, focusing on quasi normal modes (QNM) and numerical methods in electromagnetism. I had a talk about QNM (mostly what I did for my PhD) and my latest work on QNM coupling. Here is my presentation. See you all next year!