Quantum Optical Effects in Semiconductors

Angular correlation of photons emitted from an excited quantum well

“…The derived equations are valid for both ordered and disordered quantum wells. In contrast with the microscopic density-matrix approach [3,4] used in Ref. [2], which has been developed during the last years, we have applied an alternative approach, in which the electronic system of the quantum well is treated as a bath, whereas the photon system constitutes the bathed system.…”

“…The fringes vanish already for small differences between q k and q 0 k , corresponding to deviations of about two degrees of the emission angles. These experimental results have been explained within the framework of a densitymatrix theory [2], which describes quantum-optics of semiconductor heterostructures on a microscopic basis [3,4]. In this approach, the semiconductor electrons and holes are treated on the same level as the quanta of the electromagnetic field.…”