As a particle physicist, I obviously have a privileged relationship with Quantum Mechanics. However, in my specific case, I was also responsible for an analysis (polarization of heavy quarkonia, namely Psi, Upsilon and Chi) in the CMS experiment (LHC programme, CERN) that uses fundamental principles of Quantum Mechanics to measure the angular momentum content of these states. This analysis opened up a new area both in phenomenology and in new experimental methods for studying these states. This is a problem that has been unresolved for over 30 years, and my CMS group has made and continues to make a fundamental contribution based on the fundamental principles of Quantum Mechanics.
On the quantum technologies side, I developed quantum algorithms for experimental particle physics with my group, namely jet reconstruction and trajectory tracing methods. In particular, I am the Portuguese representative in the CERN QC4HEP working group within the CERN Quantum Initiative and, in this capacity, one of the authors of the white paper produced by the group. I am currently doing in-depth work on creating quantum algorithms to simulate bound states in Quantum Field Theory.
In the more technological field, I am involved in the European PTQCI project for the implementation of the quantum communications infrastructure in Portugal.