This ISSSR 2010 paper by Truong and Handel examines quantum 1/f noise theory and experiment in Quantum Well Infrared Photodetectors (QWIPs). The research presents comprehensive comparison between theoretical predictions and experimental measurements of 1/f noise in intersubband photodetectors, validating quantum noise models and analyzing how quantum well design parameters, doping concentration, and temperature affect noise characteristics and detection sensitivity in QWIP focal plane arrays for thermal imaging applications.