Reversible Logic-Based Fault-Tolerant Nanocircuits in QCA

Table 2

Performance analysis of different fault-tolerant full adders.

Parameter	[7]	[8]	[9]	[10]	Proposed
Gate count	5	6	2	4	1
Quantum cost	25	18	14	11	8
Garbage outputs	4	6	3	3	3
Constant inputs	2	5	2	2	2
Logical calculations	8𝛼+16𝛽+8𝛿	12𝛼+8𝛽+4𝛿	8𝛼+6𝛽+2𝛿	9𝛼+4𝛽+3𝛿	13𝛼+4𝛽+𝛿

𝛼: “two-input EXOR calculation”; 𝛽: “two-input AND calculation”; 𝛿: “NOT calculation.”