Visitors to the Faculty of Informatics at ELTE were introduced to the significance, tasks, and challenges of quantum informatics in a lecture. Beyond the threat posed by quantum computers, we presented some of the research being conducted at the university, as well as the quantum encryption network being developed as part of the QCIHungary project, through quantum encryption algorithms and the Piquasso photonic quantum computer simulator. In addition to research projects, software projects aimed at community building also played a role. One such project is the qcr code repository, where researchers can share their code for publications. Another is QCanvas, where researchers and students can design algorithms in an interactive and collaborative manner. These can then be run on the platform using simulators (e.g., Piquasso or Qiskit) or real quantum computers. During the presentation, visitors experienced the strangeness of quantum physics firsthand with the help of three polarizing filters.