Regensburg 2010 – wissenschaftliches Programm
HL 60.4: Poster
Donnerstag, 25. März 2010, 18:00–20:00, Poster D1
Quantum-optical radiation laws for confined semiconductor systems — •Felix Richter and Klaus Henneberger — Institut für Physik, Universität Rostock, 18051 Rostock
We present a quantum-kinetically exact theoretical framework for the propagation, emission and scattering of light in bounded media in the context of semiconductor optics. The theory is based on the nonequilibrium photon Green’s functions. Its advantage is that the spatial inhomogeneity inherent to bounded media and, hence, to many semiconductor optics problems, is fully and exactly considered. The electromagnetic properties of media are treated microscopically rather than in an effective approximation, and media may be arbitrarily dispersive and absorptive.
Relations for the propagation of quantized (squeezed) light are given. In this respect, our approach may serve as a replacement for the input-output formalism in quantum optics, which implies some severe approximations as a concession to its simplicity.
The theory yields a generalized Kirchhoff–Planck radiation law which provides insight into the interplay of emission and absorption in nonequilibrium steady-state systems.
 F. Richter, M. Florian, and K. Henneberger, Phys. Rev. B 78, 205114 (2008)  K. Henneberger and F. Richter, Phys. Rev. A 80, 013807 (2009)