  In this paper, we investigate tunneling of conduction band electrons in a
system of an asymmetric double quantum dot which interacts with an environment.
First, we consider the case in which the system only interacts with the
environment and demonstrate that as time goes to infinity they both reach an
equilibrium, which is expected, and there is always a maximum and minimum for
the populations of the states of the system. Then we investigate the case in
which an external resonant optical pulse (a laser) is applied to the system
interacting with the environment. However, in this case for different
intensities we have different populations of the states in equilibrium and as
the intensity of the laser gets stronger, the populations of the states in
equilibrium approach the same constant.
