Emission properties and photon statistics of a single quantum dot laser.
A theoretical description for a single quantum-dot emitter in a microcavity is developed.We analyze for increasing steady-state pump rate the transition from the strong-coupling regime with photon antibunching to the weak-coupling regime with coherent emission. It is demonstrated how Coulomb interaction of excited carriers and excitation-induced dephasing can strongly modify the emission properties. Our theoretical investigations are based on a direct solution of the Liouville-von Neumann equation for the coupled carrier-photon system. We include multiple carrier excitations in the quantum dot, their Coulomb interaction, as well as excitation-induced dephasing and screening. Similarities and differences to atomic systems are discussed and results in the regime of recent experiments are interpreted.
Ritter
S
S
Institute for Theoretical Physics, University of Bremen, 28334 Bremen, Germany.
Gartner
P
P
Gies
C
C
Jahnke
F
F
D003198:Computer Simulation; D017076:Computer-Aided Design; D003627:Data Interpretation, Statistical; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008027:Light; D008029:Lighting / Q000295:instrumentation*; D015233:Models, Statistical; D017785:Photons; D045663:Quantum Dots; D012542:Scattering, Radiation