Ali Newaz  Bahar, Sharmin  Farzana, Nur Mohammad  Nahid, Abdul  Mohaimin Eusufzai, 
    Design and Implementation of Area Efficient Reversible Full
Adder-Subtractor in QCA,
    Journal of Engineering and Applied Sciences,
    Volume 13,Issue 8,
    2018,
    Pages 2042-2048,
    ISSN 1816-949x,
    jeasci.2018.2042.2048,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2018.2042.2048)
    Abstract: In the near future, the part of energy dissipation due to information loss in irreversible computation
will become a serious issue in VLSI chips. A Quantum-dot Cellular Automata (QCA) is anemerging
nanotechnology which facilitates reversible computing. It’s a new computing paradigm with applications in
extremely low energy dissipation. In this study reversible full adder-subtractor is proposed. For evaluating the
functionality and energy dissipation QCA Designer and QCAPro tools are used. Proposed design is
implemented in multi–layer in QCA designertool. It improves 78% of cell count compared to the existing
QCA-based reversible full adder-subtractor. QCAPro tool demonstrates the efficiency of leakage and switching
energy improvements.
    Keywords: Quantum-dot cellular automata;reversible computing;full adder-subtractor;single layer circuit;multi-layer circuit;reversible