International Journal of Theoretical Physics

, Volume 58, Issue 12, pp 4042–4063 | Cite as

Design of Ultra-Efficient Reversible Gate Based 1-bit Full Adder in QCA with Power Dissipation Analysis

  • Soha Maqbool Bhat
  • Suhaib AhmedEmail author


The difficulties which the CMOS technology is facing at the nano scale has led to the investigation of quantum-dot cellular automata (QCA) nanotechnology and reversible logic as an alternative to conventional CMOS technology. In this paper, these two paradigms have been combined. Firstly, a new 3 × 3 reversible gate, SSG-QCA, which is universal and multifunctional in nature, is proposed and implemented in QCA using conventional 3-input majority voter based logic. By using the concept of explicit interaction of cells, the proposed gate is further optimized and then used to design an ultra-efficient 1-bit full adder in QCA. The universal nature has been verified by designing all the logic gates from the proposed SSG-QCA gate whereas the multifunctional nature is verified by implementing all the 13 standard Boolean functions. The proposed 3 × 3 gate and adder designs are then extensively compared with the existing literature and it is observed that the proposed designs are ultra-efficient in terms of both area and cost in QCA technology. In addition to this energy dissipation analysis for different scenarios is also done on all the designs and it is observed that the proposed designs dissipate minimum energy thereby making them suitable for ultra-low power designs.


QCA Reversible gate Universal gate Full adder Nanotechnology Quantum cells Energy estimation 


Funding Information

This research was funded by TEQIP-III (A Government of India Project Assisted by the World Bank) under CRS with sanction no.: 1-5736612144.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringBaba Ghulam Shah Badshah UniversityRajouriIndia

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