Open AccessTime-resolved luminescence of the coupled quantum dot–microcavity system: general theory
Author(s) -
Nguyễn Văn Hiếu,
Nguyen Bich Ha
Publication year - 2010
Publication title -
advances in natural sciences nanoscience and nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.476
H-Index - 40
ISSN - 2043-6262
DOI - 10.1088/2043-6262/1/4/045001
Subject(s) - quantum decoherence , photon , quantum dot , luminescence , physics , optical microcavity , density matrix , electron , atomic physics , quantum system , matrix (chemical analysis) , quantum mechanics , quantum , optoelectronics , materials science , laser , composite material
The general theory of the time-resolved luminescence of the coupled system consisting of a single-mode microcavity and a two-level quantum dot containing one electron placed inside this microcavity is presented. It is based on the study of the time evolution of the density matrix of a larger system consisting of one electron in the two-level quantum dot, single-mode photons in the microcavity and external photons in a spatial region in which the emitted photons are detected. The decoherence of the system is taken into account in the Markov approximation. The explicit analytical form of the time dependence of the intensity of the emitted photon beam is established. It depends not only on the physical parameters of the system but also contains the matrix elements determining the initial condition of the luminescence process.