Document Type : Research

Authors

• Nader Daneshfar ¹
• Paria Chavoshani ²

¹ IRAN

² Physics Department-Faculty of Science, -Razi University- Kermanshah-Iran

Abstract

In this paper, the induced tunneling transparency (TIT) in an asymmetric triple quantum dot molecule (QDM) is investigated using the density matrix formalism. The dynamics of this quantum system is described by the Liouville–von Neumman–Lindblad equation. To study the optical absorption and TIT, the system equations are solved under the steady-state. The effect of inter-dot tunnelling between quantum dots on the optical absorption and dispersion properties of the probe field is studied. It is shown that by properly adjusting the tunneling coupling parameter, the number and width of transparency windows can be efficiently controlled in such a way that several transparency windows can be created.

Keywords

• Quantum dot molecule
• Tunneling induced transparency
• Absorption coefficient