DYNAMIC BEHAVIOR OF QUANTUM CELLULAR-AUTOMATA

We examine the dynamic behavior of quantum cellular automata, arrays o f artificial quantum-dot cells that can be used to perform useful comp utations. The dynamics of the array can be solved directly, retaining the full many-electron degrees of freedom only for small array sizes. For larger arrays, we develop several approximate techniques for reduc ing the size of the basis set required. We examine the effect of inter cellular quantum correlations on the switching response. Several impor tant examples of switching behavior are solved using the techniques de veloped. (C) 1996 American Institute of Physics.