ABSTRACT

We will review the motivations and history of the experiments that lead to the Nobel Prize in Physics 2022, attributed to Alain Aspect, John Clauser and Anton Zeilinger.  We will then discuss some future perpectives, both on the side of quantum technologies, and on the side of the more philosophical issues that motivated initially these experiments.  

BIO:

Philippe Grangier is Director of Research at CNRS, working at the Laboratoire Charles Fabry at the Institut d'Optique in Palaiseau, France. In the early 1980’s he worked on Bell’s inequality tests and single-photon interference experiments, under the direction of Alain Aspect. Then he set up the Quantum Optics group at the Institut d'Optique, and he carried out a wide range of experiments, including quantum non-demolition (QND) measurements, quantum cryptography, the production of single photons and optical Schrödinger cats, and the manipulation of single trapped atoms.  The methods he developed in these experiments now have numerous applications for quantum technologies.  He has coordinated many national and European projects, and he leads currently the QUCATS support and coordination action (CSA), assisting the European Commission in many scientific and logistical aspects of quantum technologies.