Abstract
Conventional lithography-based VLSI design technology deployed to optimize low-powered-computing and higher scale integration of semiconductor components. However, this downscaling trend confronts serious challenges of tunneling and leakage current increment to the Complementary Metal–Oxide–Semiconductor (CMOS) technology on nanoscale regimes. To resolve the physical restriction of the CMOS, Quantum-dot Cellular Automata (QCA) technology dedicates for the nanoscale technology that embrace a new information transformation technique. However, QCA is limited to the design of the sequential and combinational circuits only. This paper presents some highly scalable features reversible logic gate for the QCA technology. In addition, proposed layout compared with CMOS technology, offer a better reduction in size up to 233 times.
Highlights
Over the years, the reversible logic has attained a great attention due to their ability of power minimization which is the main requirement in the low power VLSI design
The Quantum-dot Cellular Automata (QCA) based design consists of a wire, a 3-input majority voter gate, and an inverter
Material and methods A Quantum Cellular Automata, one of the emerging nanotechnologies was first introduced by (Lent et al 1993a) which encodes information based on position of Proposed circuits and presentation A reversible logic gate is one that has n input n output; with one-to-one mapping that means it determines the outputs from the inputs
Summary
The reversible logic has attained a great attention due to their ability of power minimization which is the main requirement in the low power VLSI design This technology is a promising computing paradigm that has immense applications in emerging technologies such as quantum dot cellular automata, quantum computing, optical computing, DNA computing, optical information processing, etc. In reversible circuits the input and output mapping is oneto-one that means every unique output vector is generated from each input vector, and vice versa It has shown by (Landauer 1961) that the loss of every bit of information dissipates energy of kTln joules, where k is Boltzmann’s constant and T is the absolute temperature. The QCA based design consists of a wire, a 3-input majority voter gate, and an inverter.
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