10 October 2023 the Light and Materials Synergy day was held with over 250 participants. The organising committee consisting of Christelle Prinz, Francesca Curbis, Joakim Bood and Tönu Pullerits had put together an exciting program on the theme Light Meets Materials. The program included updates from the research environments within the profile area, plenary talks and poster pitches. During the afternoon parallel sessions invited speakers presented engaging talks on the topics of Medicine & Light, Energy, Climate & Environment and Quantum Physics & Technology. More than 80 posters were presented from all areas within Light & Materials.