Purpose

This paper aims to propose the reversible Feynman and double Feynman gates using quantum-dot cellular automata (QCA) nanotechnology with minimum QCA cells and latency which minimizes the circuit area with the more energy efficiency.

Design/methodology/approach

The core aim of the QCA nanotechnology is to build the high-speed, energy efficient and as much smaller devices as possible. This brings a challenge for the designers to construct the designs that fulfill the requirements as demanded. This paper proposed a new exclusive-OR (XOR) gate which is then used to implement the logical operations of the reversible Feynman and double Feynman gates using QCA nanotechnology.

Findings

QCA designer-E has been used for the QCA designs and the simulation results. The proposed QCA designs have less latency, occupy less area and have lesser cell count as compared to the existing ones.

Originality/value

The latencies of the proposed gates are 0.25 which are improved by 50% as compared to the best available design as reported in the literature. The cell count in the proposed XOR gate is 11, while it is 14 in Feynman gate and 27 in double Feynman gate. The cell count for the proposed designs is minimum as compared to the best available designs.

中文翻译：

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量子点元胞自动机纳米技术中可逆费曼和双费曼门的设计

目的

本文旨在提出使用量子点元胞自动机 (QCA) 纳米技术的可逆费曼门和双费曼门，具有最少的 QCA 单元和延迟，从而最大限度地减少电路面积，提高能效。

设计/方法/途径

QCA 纳米技术的核心目标是构建高速、节能且尽可能小的设备。这给设计人员带来了挑战，即如何根据要求构建满足要求的设计。本文提出了一种新的异或 (XOR) 门，然后使用 QCA 纳米技术将其用于实现可逆费曼门和双费曼门的逻辑运算。

发现

QCA designer-E 已用于 QCA 设计和仿真结果。与现有设计相比，拟议的 QCA 设计具有更短的延迟、占用的面积和更少的单元数。

原创性/价值

所提出的门的延迟为 0.25，与文献中报道的最佳可用设计相比提高了 50%。所提出的异或门中的单元数为 11，而费曼门中为 14，双费曼门中为 27。与最佳可用设计相比，所建议设计的电池数量最少。