Dissipative Dynamics in Quantum Dot Cell Arrays
E. Cota, F. Rojas, Sergio E. Ulloa · physica status solidi (b) · 2002
We present calculations for the static and dynamical properties of two parallel double dots, with one extra electron each, constituting a four-dot QCA basic cell. When a potential difference is applied to one of the double dots, causing the electron to switch, we find that the electron on the other double dot switches accordingly, in response to inter-cell Coulomb interactions. We include dissipative effects via a master equation approach describing the time evolution of the density matrix for the four-dot cell.