Shot-noise reduction in multiple-quantum-well resonant tunneling diodes

This paper develops formalism for computing the shot noise in resonant-tunneling structures having an arbitrary number of quantum wells (QWs). It is based on the electrostatic feedback effect in QW structures and is the first known shot-noise formalism that treats the electrostatic and quantum effects in a self-consistent fashion. A significant drop in the shot-noise factor is predicted with increasing QW number in graded structures. The minimum room-temperature shot-noise factor predicted by this work is 0.24 in a triple-well structure.