A Customizable Quantum-Dot Cellular Automata Building Block for the Synthesis of Classical and Reversible Circuits

Table 3

Comparison between the proposed QCA design for the Toffoli gate and other designs.

Toffoli logic structures	Complexity; (cell count)	Latency; (clock cycle)
Other designs
Fig. 5 in [2]	169	4
Fig. 7b in [15]	75	1
Fig. 7a in [15]	48	1
Fig. 4.5 in [16]	44	1
The proposed design
Figure 13	36	2