title: Experimental violation of bell-like inequalities by electronic shot noise.
abstract: We report measurements of the correlations between electromagnetic field quadratures at two frequencies f1=7  GHz and f1=7.5  GHz of the radiation emitted by a tunnel junction placed at very low temperature and excited at frequency f1+f2. We demonstrate the existence of two-mode squeezing and violation of a Bell-like inequality, thereby proving the existence of entanglement in the quantum shot noise radiated by the tunnel junction.
authors.affiliation: Département de Physique, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada.
authors.forename: Jean-Charles
authors.initials: JC
authors.lastname: Forgues
authors.affiliation: Département de Physique, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada.
authors.forename: Christian
authors.initials: C
authors.lastname: Lupien
authors.affiliation: Département de Physique, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Reulet