Physik seit Einstein
blue headline1 headline2 headline3 blue
blue headline4 blue
Deutsche Physikalische Gesellschaft Humboldt-Universität zu Berlin Technische Universtiät Berlin
blue green blue

Quantum noise in mesoscopic systems

Wolfgang Belzig Wolfgang Belzig
Department of Physics and Astronomy, University of Basel, Klingelbergstr. 82, 4056 Basel, Switzerland
Full counting statistics aims at a complete characterization of the distribution of measurement outcomes. In my talk I will demonstrate how this concept allows to investigate quantum correlations in a variety of mesoscopic systems. Three examples will be discussed:
a) In analogy to Schottky's work on the current fluctuations in a vacuum diode, shot noise in superconducting contacts allows to identify the nature of the elementary charge transfer events.
b) The Coulomb interaction in complex quantum dots or molecules leads to a strongly correlated current statistics.
c) The density fluctuation statistics in a fermionic quantum gas reflects the crossover from a superfluid state to a molecular Bose-Einstein condensate.
blue Printable version
blue         blue
blue Valid HTML 4.01!       blue
blue         blue