We implement laboratory activities for the construction of key concepts in quantum optics based on experimentation and discussion. These activities were realized in the Quantum Optics Laboratory at Tecnologico de Monterrey with a multidisciplinary group of undergraduate students. We focus on experiments that involve understanding the concept of a photon, such as single photon interference, correlated photons, and entangle- ment. As an indicator of acquired learning, we design a questionnaire with conceptual questions. This initiative seeks to stimulate the development of multidisciplinary projects in quantum optics taking as a starting point the understanding of basic concepts.