Characteristics of relaxation process in an optically coupled quantum-dots system

Summary form only given. Optical near-field techniques are considered promising as enabling technologies for fabrication and high-speed operation of novel optical devices in nanometric regime, because of the size-dependent localization far beyond the diffraction limit of light. We have regarded the optical near field as a coupled mode of photons and matter excitation, i.e., polaritons, and derived the interaction between nanometric objects mediated by such field. In order to know dynamics of a nanometric device, it is very important to investigate how the signal transfers among quantum components. In this theoretical study, we discuss time evolution of exciton population in the system consisting of two quantum dots with optical near-field illumination.