Effective design of logic gates and circuit using quantum cellular automata (QCA)

Balakrishnan, Libi; Godhavari, T.; Kesavan, Sujatha

doi:10.1109/icacci.2015.7275651

Cited by 8 publications

(1 citation statement)

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“…The majority gate can be used for the implementation of AND and OR gate by applying fixed polarization to one of the inputs. When the input polarization is fixed to 1.00 (logic 1) the majority voter acts as an OR gate and when the polarization is fixed to -1.00 (logic 0) the gate acts as an AND gate [12]. The AND gate shown has the input 1 and 0 for the shown case below (evident from the cell polarization).…”

Section: Basic Building Blocks In Qcamentioning

confidence: 99%

Quantum dot cellular automata: A new paradigm for digital design

Bilal

Ahmed

Kakkar

2019

Theo. NANOTECHNOLOGY

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Quantum Dot Cellular Automata (QCA) is a newly developed paradigm for digital design, which holds the potential to be the possible alternative to the present CMOS (Complementary Metal Oxide Semi-Conductor) technology. After surviving for nearly five decades, the scaling of CMOS is finally reaching its limits. The asperities are not only seen from the physical and technological viewpoint but also from the material and economical perspectives. With no more scaling possible, there arises a need to look for promising alternatives to continue with the nano size/scale computations and to hold on to the Moore’s law. QCA offers a breakthrough required for the fulfilment of certain lacking aspects of CMOS technology in the nano regime. QCA is a technology that involves no current transfer but works on electronic interaction between the cells. The QCA cell basically consists of quantum dots or metal islands separated by certain distance and the entire transmission of information occurs via the interaction between the electrons localized in these potential wells. Since the technology is new and in a premature phase, a huge scope lies ahead of the researchers to investigate and make QCA designing a reality. In this paper the QCA technology is reviewed with sufficient focus on basic concepts, implementations and information flow. The various building blocks in QCA are discussed and their working on the basis of physical laws is explained. This paper forms the basis for further complex digital designing in QCA.

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Section: Basic Building Blocks In Qcamentioning

confidence: 99%