Dynamically logical modulation for THz wave within a dual gate–controlled 2DEG metasurface

High-speed logic modulation of terahertz (THz) waves is crucial for future communications, yet a technology gap persists. Here, we report a dual gate–controlled two-dimensional electronic gas logic modulation metasurface that enables symmetric and asymmetric electron distribution states through independent control of the two electron transport channels. The transition between these two states leads to various response modes in the metasurface and notably increases the diversity of the spectrum transformation, resulting in a multivalued relationship in which each output corresponds to more than one input signal, thus establishing the logical modulation. Our results demonstrate the common logical functions of AND, OR, XOR, XNOR, NOR, and NAND at different frequencies with a modulation speed faster than 250 picoseconds. This work offers a unique avenue for the high-speed, free-space logical operation of THz waves and increases the security of secure communication.

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Publication Details

Journal
Science Advances
Published
2024-12-04
DOI
https://doi.org/10.1126/sciadv.adr1448
Citations
20
Primary Topic
Metamaterials and Metasurfaces Applications
Type
article
Field-Weighted Citation Impact
2.36

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article

Dynamically logical modulation for THz wave within a dual gate–controlled 2DEG metasurface

Tie Jun Cui, Shixiong Liang, Sen Gong, Lan Wang et al.
20 citations
Science Advances
Metamaterials and Metasurfaces Applications
2.36
article

Dynamically logical modulation for THz wave within a dual gate–controlled 2DEG metasurface

Tie Jun Cui, Shixiong Liang, Sen Gong, Lan Wang, Huajie Liang, Feng Lan, Xuan Cong, Tianchi Zhou, Shiqi Wang, Yaxin Zhang, Huifang Zhang, Ziqiang Yang, Hongxin Zeng, Haoyi Cao, Xun Wang
article en
20 citations

Abstract

High-speed logic modulation of terahertz (THz) waves is crucial for future communications, yet a technology gap persists. Here, we report a dual gate–controlled two-dimensional electronic gas logic modulation metasurface that enables symmetric and asymmetric electron distribution states through independent control of the two electron transport channels. The transition between these two states leads to various response modes in the metasurface and notably increases the diversity of the spectrum transformation, resulting in a multivalued relationship in which each output corresponds to more than one input signal, thus establishing the logical modulation. Our results demonstrate the common logical functions of AND, OR, XOR, XNOR, NOR, and NAND at different frequencies with a modulation speed faster than 250 picoseconds. This work offers a unique avenue for the high-speed, free-space logical operation of THz waves and increases the security of secure communication.

Science AdvancesVol. 10(49)
University of Electronic Science and Technology of China (CN), Integrated Optoelectronics (Norway) (NO), Shanghai Zhangjiang Laboratory (CN), Shenzhen Institutes of Advanced Technology (CN), Hebei Semiconductor Research Institute (CN), State Key Laboratory of Millimeter Waves, Southeast University (CN)
Fundamental Research Funds for the Central Universities
Openalex Percentile: Top 10%
Metamaterials and Metasurfaces Applications
2.36
DOIOpen Access PDFOpenAlex
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