Berlin 2012 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 82: Focus Session: Semiconductor-based Quantum Communication II
HL 82.2: Topical Talk
Thursday, March 29, 2012, 15:30–16:00, ER 164
The Single-Quantum-Dot Laser — •Christopher Gies1, Matthias Florian1, Paul Gartner1,2, and Frank Jahnke1 — 1Institut für Theoretische Physik, Universität Bremen — 2National Institute of Materials Physics, Bucharest-Magurele, Romania
A single quantum-dot emitter coupled to a single microcavity mode represents a model system for fundamental quantum optical effects and various applications. We study the emission properties of this system for different excitation regimes from a single-photon source to lasing on the basis of a semiconductor model. As a function of the excitation conditions we investigate the onset of stimulated emission, the possibility to realize stimulated emission in the strong-coupling regime, as well as the excitation-dependent changes of the photon statistics and the emission spectrum. The role of possible excited charged and multi-exciton states and the different sources of dephasing for various quantum-dot transitions are discussed.