The project in the field of theoretical condensed matter physics addressed the questions on using coupling to cavity photons as a way to detect and to modify properties of various mesoscopic systems. The main results of the project consist in building a theory of excitation spectra of mesoscopic system coupled to Josephson junction spectrometer and in proposing a new scheme for detecting Majorana bound states in topological superconductors. Moreover, the project derived the general formalism for describing the coupling between interacting electronic systems and cavity photons valid in the ultarstrong coupling regime achieved in the state-of the-art experiments performed in the field. This framework was used to resolve the issue of quantum phase transitions being absent in the strongly correlated electronic system coupled to a single mode cavity. This project also demonstrated that coupling to cavity photons is a novel way to modify the topological criterion in the prototype model of topological insulator.
The project resulted in three peer-reviewed publications in top-tier domain journals (Physical Review B and Communications Physics) and one additional arXiv preprint (the manuscript is now undergoing a review process at Physical Review B). The results were also presented at two conferences (as a poster presentation in 2021 and as an invited talk in 2022) and seven invited seminar talks at various Universities in Europe.
To promote the novel research field of light-control of quantum materials, the workshop on “Cavity Control of Quantum Matter” was organised at Collège de France, Paris, France (from 17/10/2022 to 18/10/2022). The two-day workshop included sixteen scientific talks by the top scientists from France, Italy, Spain, Germany, Switzerland, and Poland, and was open to the general public. Around fifty people attended the workshop, including students and postdocs working in the research institutes in Paris area as well as members of the general public.
During the action, the Researcher took part in various training activities, such as Summer Schools in Physics and French language classes. The Summer Schools offered training on numerical simulations, quantum technologies and hybrid light-matter systems, directly related to the project.
