Towards reversible QCA computers: Reversible gates and ALU

Chaves, Jeferson F.; Silva, Douglas S.; Camargos, Victor Vieira; Neto, Omar P. Vilela

doi:10.1109/lascas.2015.7250458

Cited by 22 publications

(19 citation statements)

References 14 publications

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“…In addition to that the reduction of cell count, covered area, and total clock cycles by 39%, 28% & 33% respectively is achieved as compared to the design in [35]. Also, the proposed design is superior in comparison with the design in [36] in terms of 4% less cell count, 4% less covered area, and 60% reduction in clock cycles.…”

Section: Simulation Resultsmentioning

confidence: 79%

Reversible Arithmetic Processor Using Quantum Dot Cellular Automata

Sanki

Bevara

Shakamuri

et al. 2022

Preprint

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Quantum dot Cellular Automata (QCA) may be viewed as the potential digital logic design alternative to supplant the current CMOS Technology. The logical design is based on the polarization of electrons to transfer information which results in a huge improved performance metric in terms of speed, power & area. This paper focuses on the design of a Reversible Arithmetic Processor (RAP) with Reversible Multiplexer (RM) and Reversible Functional Gate (RFG) in QCA. The QCA Designer-E simulation tool has been used to design and verify all the proposed architecture and the energy dissipation has been simulated using a coherent vector energy engine setup. The total and average energy dissipation per cycle of our proposed RAP using QCA are 3 . 9 1 × 1 0 − 1 ev and 3 . 5 6 × 1 0 − 2 ev respectively. Regarding cell count, area, latency, and energy dissipation, the proposed architecture beats out the existing architecture.

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Section: Simulation Resultsmentioning

confidence: 79%

Reversible Arithmetic Processor Using Quantum Dot Cellular Automata

Sanki

Bevara

Shakamuri

et al. 2022

Preprint

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“…The USE clocking scheme enables feedback paths with small or large loops and allows for routing simplification due to its flexibility. Recently, numerous studies on reversible QCA designs have been conducted [16,17].…”

Section: Fig 1 Qca Cell Polarizationmentioning

confidence: 99%

Novel Ultra-Energy-Efficient Reversible Designs of Sequential Logic Quantum-Dot Cellular Automata Flip-Flop Circuits

Alharbi

Edwards

Stocker

2022

Preprint

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Quantum-dot cellular automata (QCA) is a technological approach to implement digital circuits with exceptionally high integration density, high switching frequency, and low energy dissipation. QCA circuits are a potential solution to the energy dissipation issues created by shrinking microprocessors with ultra-higher integration densities. Current QCA circuit designs are nonreversible, yet reversible circuits are known to increase energy efficiency. Thus, the development of reversible QCA circuits will further reduce energy dissipation. This paper presents novel reversible and nonreversible sequential QCA set/reset (SR), data (D), Jack Kilby (JK), and toggle (T) flip-flop designs based on the majority gate that utilizes the universal, standard, and efficient (USE) clocking scheme, which allows the implementation of feedback paths and easy routing for sequential QCA-based circuits. The simulation results confirm that the proposed reversible QCA USE sequential flip-flop circuits exhibit energy dissipation less than the Landauer energy limit. Nonreversible QCA USE flip-flop designs, although having higher energy dissipation, sometimes have floorplan areas and delay times less than those of reversible designs; therefore, they are also explored. The trade-offs between the energy dissipation versus the area cost and delay time for the reversible and nonreversible QCA circuits are examined comprehensively.

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“…In [25] In the research paper [33], a fault-tolerant QCA-based ALU with seven layers is described with power e ciency. A 3X3 modi ed TSG gate is employed to decrease the area and delay.…”

Section: Literature Reviewmentioning

confidence: 99%

Design of Area Efficient Multilayer Reversible ALU with Energy Estimation using QCA

Venna

Jayakumar

2022

Preprint

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Quantum-dot Cellular Automata (QCA) is a transistor-less technology in which the information passes using a technique that requires the breeding of a polarization state from one circuit element to another, and computations take place without current. The reversible logic circuits potentially overcome the extreme power dissipation problem in CMOS circuits in quantum computing. In any computation system, the core part of the system is the Arithmetic and Logic Unit (ALU). This paper proposes a QCA technology-based reversible ALU using the Peres and Double Peres gates and implements multilayer architecture. It performs 29 operations, including logic operations, addition, increment, and subtraction. This ALU contains 199 cells with 2.5 clocks of latency. In comparison to existing research, the proposed multilayer ALU architecture improves the cell count and area by 20% and 66%, respectively. The total energy dissipation of the design is \(8.24e-02 eV\). QCA Designer 2.0.3 is used to simulating the proposed ALU architectures.

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Towards reversible QCA computers: Reversible gates and ALU

Cited by 22 publications

References 14 publications

Reversible Arithmetic Processor Using Quantum Dot Cellular Automata

Reversible Arithmetic Processor Using Quantum Dot Cellular Automata

Novel Ultra-Energy-Efficient Reversible Designs of Sequential Logic Quantum-Dot Cellular Automata Flip-Flop Circuits

Design of Area Efficient Multilayer Reversible ALU with Energy Estimation using QCA

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