ULB research| Personal data | Research themes | Ongoing teaching | Publications |
MASSAR Serge
Units
Quantum Information Laboratory
Person in charge of the Unit : Oui
Our research group at the Université libre de Bruxelles, working on quantum information and bio-inspired information processing, both at the theoretical and experimental level. On the theory side, we are interested in many aspects of quantum information, including quantum correlations, quantum cryptography, and quantum foundations. Our experimental activity deals with photonics. We work on the development and manipulation of novel sources of entangled photons, both in fibers and in waveguides, as well as methods to manipulate these photons. In addition we develop bio-inspired photonic processing systems, such as reservoir computing.
Theoretical Physics : Fundamental Interactions
Our research is at the interface between fundamental interactions, including gravity, and cosmology. We use experiments and observations from colliders, telescopes, underground detectors, etc, to uncover the laws of nature beyond those encompassed within the Standard Model of particle physics. The topics we are concerned with include the nature and origin of dark matter and dark energy, the physics of neutrinos, the origin of the baryon asymmetry of the universe and its relation to CP violation and, last but not least, the mechanism at the origin of the mass of elementary particles (the Brout-Englert-Higgs mechanism).
Projetcs
We want to manipulate light at the quantum level, i.e. at the level of single photons. A first aim is to develop the experimental techniques that will enable these kinds of experiments. We thus develop sources of photon pairs in optical fibers and in silicon nanostructures and we manipulate entangled photons in the frequency domain. A second aim is to realize quantum communication protocols that don't have a classical analog, such as quantum cryptography or quantum coin tossing.
We study different aspects of the theory of quantum information, such as quantum communication and quantum cryptography, quantum non locality, quantum algorithms, quantum measurements, quantum randomness, quantum cloning, and the foundations of quantum mechanics. Recently we introduced the notion of device independent information processing, in which the correct operation of a quantum protocol is certified by quantum non locality.
