IPCDF, LABORATOIRE KASTLER BROSSEL, UMR 8552 (ENS, UPMC, CNRS)
Professeur Serge Haroche
The team headed by Prof Serge Haroche studies light-matter coupling in the limit where only one atom interacts with a few photons stored in a modern equivalent of Einstein's famous "photon box". This very simple system, which is directly described by the fundamental principles of quantum physics, allows one to illustrate the least intuitive aspects of quantum behaviour, such as the superposition of states or the measurement postulate. It also allows for the quantitative exploration of the border between the quantum world and the classical world. Finally, it offers a prototype of a system to process information by using the remarkable properties of quantum logic.