6. Conclusion

In this chapter, we have presented a QCA implementation of several fundamental basic elements and logic gates. Architectures and simulation results are also proposed. An important step in designing QCA circuits is reducing the number of required cells. The proposed method for the reduction of the number of cells in the QCA structure is based on the position of the electrons and the interaction forces between them. In the current proposed work, we have optimized the number of QCA cellule and reduced the wire crossings. Furthermore, this work may be extended to design other reversible QCA gates.
