The problems pertaining to scaling which the conventional technologies were facing was successfully addressed with the novel technology known as Quantum-dot Cellular Automata (QCA). The principle spin and anti-spin has been already employed for representation of the binary logic states. The QCA has exploited the concept of spin and evolved a new computational paradigm where the position of electrons decides about the logic states. Power dissipation is the main limitation of all the nanoelectronics design techniques including the QCA. Researchers have proposed the various mechanisms to limit this problem. Among them, reversible computing is considered as the reliable solution to lower the power dissipation. In reversible computing, the primitive building blocks are the reversible logic gates. This paper explores the Peres gate as the universal structure as all the basic logic gates have been derived from this gate only. All the proposed logic gate designs were simulated and their credibility was successfully verified with the QCA Designer tool.

Keywords: Quantum Dot Cellular Automata; Reversible Computing; Peres Gate; Power Dissipation; QCA Designer;