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

Autor: Zeng H; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China.; Engineering Center of Integrated Optoelectronic & Radio Meta-chips, Chengdu 610054, China.; Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China., Cong X; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China., Zhang H; Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen 518110, China., Gong S; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China.; Engineering Center of Integrated Optoelectronic & Radio Meta-chips, Chengdu 610054, China.; Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China., Zhou T; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China., Wang L; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China.; Engineering Center of Integrated Optoelectronic & Radio Meta-chips, Chengdu 610054, China., Cao H; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China., Liang H; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China., Liang S; National Key Laboratory of Application Specific Integrated Circuit, Hebei Semiconductor Research Institute, Shijiazhuang, China., Wang S; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China., Lan F; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China.; Engineering Center of Integrated Optoelectronic & Radio Meta-chips, Chengdu 610054, China.; Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China., Wang X; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China., Yang Z; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China.; Engineering Center of Integrated Optoelectronic & Radio Meta-chips, Chengdu 610054, China.; Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China., Zhang Y; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China.; Engineering Center of Integrated Optoelectronic & Radio Meta-chips, Chengdu 610054, China.; Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China., Cui TJ; Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China.; Institute of Electromagnetic Space and State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, China.
Jazyk: angličtina
Zdroj: Science advances [Sci Adv] 2024 Dec 06; Vol. 10 (49), pp. eadr1448. Date of Electronic Publication: 2024 Dec 04.
DOI: 10.1126/sciadv.adr1448
Abstrakt: 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.
Databáze: MEDLINE