The dipole-dipole interaction in photonic quantum wires

Numerical simulations are performed on the absorption coefficient in photonic quantum wires in the presence of the dipole-dipole interaction (DDI). The quantum wire is made from the two photonic crystals A and B where A is embedded in B. The probe and pump laser fields are applied to study the absorption process. Nanoparticles are not only interacting with each other via the DDI but also interacting with bound photon states of the wire. It is found that in the absence of the DDI the spectrum has two peaks and two minima. However, in the presence of the DDI the two peaks shift to the left of the zero detuning but the position of the minima does not change. These properties can be used to make new types of optoelectronic devices. (C) 2008 Elsevier Ltd. All rights reserved.