Logic Gates of Terahertz Spoof Surface Plasmons

Xinxin Gao, Bao Jie Chen, Kam-Man Shum, Qing Le Zhang, Qian Ma, Wen Yi Cui, Tie Jun Cui*, Chi Hou Chan*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

12 Citations (Scopus)

Abstract

Spoof surface plasmon polariton (SSPP) interconnects have great potential for the next-generation wireless communications and terahertz (THz) integrated circuits. SSPP logic gates are reported to meet the above development requirements. However, the reported SSPP logic gates consist of 3D domino waveguide structure and conversion structure with a funnel-shaped metasurface; and hence, suffer from the size limit of the compact on-chip integrations. To explore a more compact and flexible design, a series of logic gates in the planar THz SSPP platform, including OR, AND, XOR, NOT, and NAND gates, is experimentally demonstrated. Owing to the flexible dispersion behaviors, different phase differences between inputs can be controlled by manipulating the SSPP waveguide structure, such as the SSPP Mach–Zehnder interferometer, thereby realizing various THz SSPP logic gates, which will enable powerful potential in large-scale on-chip systems, future wireless communications, and intelligent computing. © 2022 Wiley-VCH GmbH
Original languageEnglish
Article number2201225
Number of pages7
JournalAdvanced Materials Technologies
Volume8
Issue number4
Online published1 Dec 2022
DOIs
Publication statusPublished - 24 Feb 2023

Funding

This work was supported in part by the Hong Kong Research Grants Council under Grant T42-103/16-N; the National Key Research and Development Program of China under Grant Nos. 2017YFA0700201, 2017YFA0700202, and 2017YFA0700203; and the Major Project of Natural Science Foundation of Jiangsu Province (BK20212002).

Research Keywords

  • logic gate
  • on-chip integrated devices
  • spoof surface plasmon polaritons
  • terahertz

RGC Funding Information

  • RGC-funded

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