Prof. Bertrand Reulet
Canada Excellence Research Chair in Quantum Signal Processing
Director, Institut Transdisciplinaire d'Information Quantique
Université de Sherbrooke
Electrons in conductors have a disordered motion, a phenomenon commonly referred to as "noise". In classical physics, this noise (more precisely, the variance of current fluctuations) is proportional to the temperature and the conductance of the conductor. When we consider a tiny device placed at very low temperature, things change: one can no longer consider the electrons as classical particles, but quantum mechanics dictates their behavior. We will describe some concepts and experiments related to quantum noise in conductors. In particular we will show very recent experiments in which we observe that the noise emitted by such a conductor may consist of correlated photons and that it can be squeezed just like light in quantum optics.
