  The integrated information theory is thought to be a key clue towards the
theoretical understanding of consciousness. In this study, we propose a simple
numerical model comprising a set of coupled double quantum dots, where the
disconnection of the elements is represented by the removal of Coulomb
interaction between the quantum dots, for the quantitative investigation of
integrated information. As a measure of integrated information, we calculate
the mutual information in the model system, as the Kullback-Leibler divergence
between the connected and disconnected status, through the probability
distribution of the electronic states from the master transition-rate
equations. We reasonably demonstrate that the increase in the strength of
interaction between the quantum dots leads to higher mutual information, owing
to the larger divergence in the probability distributions of the electronic
states. Our model setup could be a useful basic tool for numerical analyses in
the field of integrated information theory.
