  This is a course on noise which covers some of the scattering theory for
normal metals, Hanbury Brown and Twiss analogs for noise correlations with
electrons, noise correlations in superconducting/normal metal junctions.
Entanglement in such NS systems is described with a criterion for violating
Bell inegalities. The last section is devoted to the perturbative derivation of
noise in a particular one dimensional correlated electron system (Luttinger
liquid): edge states in the fractional quantum Hall effect, where the
comparison of the quasiparticle tunneling current and noise allow to identidy
the fractional charge of quasiparticles.
