Wigner function and decoherence in a microcavity-Qdot system

The relation between the master equation and the Wigner function to characterize the dissipative system dynamics (evolution, mixedness and decoherence) between a three-level quantum-dot system coupled with two light modes in a semiconductor microcavity is analyzed. In particular, it is shown that the dephasing processes increase the decoherence driving the system from the strong coupling to the weak coupling regime. r 2008 Elsevier Ltd. All rights reserved. PACS: 03.65.Yz; 42.50.Ar; 78.67.Hc

• Type: Journal
• Year: 2008
• Where: MJ
• Authors: Juan P. Restrepo, Herbert Vinck-Posada, Boris A. Rodríguez
• Keywords: Master Equation, MJ 2008, Weak Coupling Regime, Wigner Function