Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)

Both quantum-dot cellular automata (QCA) and reversible logic are emerging technologies that are promising alternatives to overcoming the scaling and heat dissipation issues, respectively, in the current CMOS designs. Here, the fundamentals of QCA and reversible logic are studied; the feasibility of...

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Main Authors: Kunalan D., Cheong C.L., Chau C.F., Ghazali A.B.
Other Authors: 56395450700
Format: Conference Paper
Published: Institute of Electrical and Electronics Engineers Inc. 2023
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spelling my.uniten.dspace-218492023-05-16T10:45:42Z Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA) Kunalan D. Cheong C.L. Chau C.F. Ghazali A.B. 56395450700 56395026200 25824209000 36441299400 Both quantum-dot cellular automata (QCA) and reversible logic are emerging technologies that are promising alternatives to overcoming the scaling and heat dissipation issues, respectively, in the current CMOS designs. Here, the fundamentals of QCA and reversible logic are studied; the feasibility of incorporating reversible logic in QCA designs is also demonstrated. Based on two existing designs, an improved version of the reversible gates, namely the Feynman Gate and the Toffoli Gate, were implemented in QCA technology using QCADesigner. The proposed design of the QCA-based Feynman Gate is faster by 1/2 cycle as compared to the existing design; while the proposed Toffoli Gate has the same latency as the existing design but it is readily to be cascaded into a more complex design. A 4-bit ripple carry adder in QCA is then designed using the proposed Feynman and Toffoli gates to realize a reversible QCA full adder. This 4-bit QCA adder with reversible logic consists of 2030 QCA cells, has a latency of 7 clock cycles and 8 garbage outputs. © 2014 IEEE. Final 2023-05-16T02:45:42Z 2023-05-16T02:45:42Z 2014 Conference Paper 10.1109/SMELEC.2014.6920795 2-s2.0-84908253661 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908253661&doi=10.1109%2fSMELEC.2014.6920795&partnerID=40&md5=57e8b5d665e80cd430c2df4904f79a72 https://irepository.uniten.edu.my/handle/123456789/21849 6920795 60 63 Institute of Electrical and Electronics Engineers Inc. Scopus
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description Both quantum-dot cellular automata (QCA) and reversible logic are emerging technologies that are promising alternatives to overcoming the scaling and heat dissipation issues, respectively, in the current CMOS designs. Here, the fundamentals of QCA and reversible logic are studied; the feasibility of incorporating reversible logic in QCA designs is also demonstrated. Based on two existing designs, an improved version of the reversible gates, namely the Feynman Gate and the Toffoli Gate, were implemented in QCA technology using QCADesigner. The proposed design of the QCA-based Feynman Gate is faster by 1/2 cycle as compared to the existing design; while the proposed Toffoli Gate has the same latency as the existing design but it is readily to be cascaded into a more complex design. A 4-bit ripple carry adder in QCA is then designed using the proposed Feynman and Toffoli gates to realize a reversible QCA full adder. This 4-bit QCA adder with reversible logic consists of 2030 QCA cells, has a latency of 7 clock cycles and 8 garbage outputs. © 2014 IEEE.
author2 56395450700
author_facet 56395450700
Kunalan D.
Cheong C.L.
Chau C.F.
Ghazali A.B.
format Conference Paper
author Kunalan D.
Cheong C.L.
Chau C.F.
Ghazali A.B.
spellingShingle Kunalan D.
Cheong C.L.
Chau C.F.
Ghazali A.B.
Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)
author_sort Kunalan D.
title Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)
title_short Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)
title_full Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)
title_fullStr Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)
title_full_unstemmed Design of a 4-bit adder using reversible logic in quantum-dot cellular automata (QCA)
title_sort design of a 4-bit adder using reversible logic in quantum-dot cellular automata (qca)
publisher Institute of Electrical and Electronics Engineers Inc.
publishDate 2023
_version_ 1806426607525560320
score 13.214268