A1 Journal article (refereed)
Novel high-performance QCA Fredkin gate and designing scalable QCA binary to gray and vice versa (2023)

Safaiezadeh, B., Kettunen, L., & Haghparast, M. (2023). Novel high-performance QCA Fredkin gate and designing scalable QCA binary to gray and vice versa. Journal of Supercomputing, 79(6), 7037-7060. https://doi.org/10.1007/s11227-022-04939-w

JYU authors or editors

Publication details

All authors or editors: Safaiezadeh, Behrouz; Kettunen, Lauri; Haghparast, Majid

Journal or series: Journal of Supercomputing

ISSN: 0920-8542

eISSN: 1573-0484

Publication year: 2023

Publication date: 22/11/2022

Volume: 79

Issue number: 6

Pages range: 7037-7060

Publisher: Springer Science and Business Media LLC

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1007/s11227-022-04939-w

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/84096

Abstract

In the design of digital logic circuits, QCA technology is an excellent alternative to CMOS technology. Its advantages over CMOS include low power consumption, fast circuit switching, and nanoscale design. Circuits that convert data between different formats are code converters. Code converters have an essential role in high-performance computing and signal processing. In this paper, first, we proposed a novel QCA structure for the quantum reversible Fredkin gate. Second, we proposed 4-bit and 8-bit QCA binary-to-gray converter and vice versa. For the second proposal, both reversible and irreversible structures are suggested. The proposed structures are scalable up to N bits. To change the conversion type from B2G to G2B, we use a 2:1 QCA multiplexer. The proposed QCA Fredkin is applied in the reversible design of QCA code converters as multiplexers. The suggested designs are simulated using the QCADesigner tool. Then we calculated figures of merit, including cell counts, occupied areas, and clock zones. Finally, we compare the proposed structures to existing research. Our proposed approach is the first quantum-dot cellular automata design to perform B2G conversion and G2B in a single QCA circuit. The proposed designs are scalable. Specifications are reported.

Keywords: quantum computing; quantum computers; signal processing; cellular automata

Free keywords: QCA technology; quantum-dot cellular automata; digital logic circuits; QCADesigner tool; Fredkin gate; Binary to gray (B2G); Gray to binary (G2B); scalable design; parity-preserving reversible gate; conservative gate

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Ministry reporting: Yes

Reporting Year: 2023

Preliminary JUFO rating: 1