Approach to study the noise properties in nanoscale electronic devices

An approach to study the noise characteristics in mesoscopic devices is pre sented. It extends, via quantum trajectories, the classical particle Monte Carlo techniques to devices where quantum nonlocal effects are important. A s a numerical example, the fluctuations of the electron current through sin gle-tunnel barriers are compared with the standard Landauer-Buttiker result s, showing an excellent agreement. (C) 2001 American Institute of Physics.