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We present a numerical simulation of the operation of a chain of 3 Quantum Cellular Automanton (QCA) cells, with the inclusion of a realistic procedure to enforce, with an externally applied bias voltage unbalance, the polarization of the first cell. The polarization state is shown to propagate correctly, as long as the bias unbalance applied to the electrodes of the first cell is not so large as to directly perturb nearby cells. The addition of dummy cells is needed to balance the asymmetries existing at the ends of a chain: this is an indication of further difficulties, that may become relevant if fabrication of more complex arrays is attempted.

Simulation of a Complete Chain of QCA Cells with Realistic Potentials