Terahertz flexible multiplexing chip enabled by synthetic topological phase transitions

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外文摘要：Flexible multiplexing chips that permit reconfigurable multidimensional channel utilization are indispensable for revolutionary 6G terahertz communications,but the insufficient manipulation capability of terahertz waves prevents their practical implementation.Herein,we propose the first experimental demonstration of a flexible multiplexing chip for terahertz communication by revealing the unique mechanism of topological phase(TP)transition and perseveration in a heterogeneously coupled bilayer valley Hall topological photonic system.The synthetic and individual TPs operated in the coupled and decoupled states enable controllable on-chip modular TP transitions and subchannel switching.Two time-frequency interleaved subchannels support 10-and 12-Gbit/s QAM-16 high-speed data streams along corresponding paths over carriers of 120 and 130 GHz with 2.5-and 3-GHz bandwidths,respectively.This work unlocks interlayer heterogeneous TPs for inspiring ingenious on-chip terahertz-wave regulation,allowing functionality-reconfigurable,compactly integrated and CMOS-compatible chips.

外文关键词：

terahertz technologytopological phase transitionsflexible multiplexing6G communicationssilicon chips

作者：

Hang Ren、Su Xu、Zhidong Lyu、Yuanzhen Li、Zuomin Yang、Quan Xu、Yong-Sen Yu、Yanfeng Li、Fei Gao、Xianbin Yu、Jiaguang Han、Qi-Dai Chen、Hong-Bo Sun

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作者单位：

State Key Laboratory of Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China

College of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027,China

Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering,Key Laboratory of Optoelectronic Information Technology(Ministry of Education of China),Tianjin University,Tianjin 300072,China

Guangxi Key Laboratory of Optoelectronic Information Processing,School of Optoelectronic Engineering,Guilin University of Electronic Technology,Guilin 541004,China

State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China

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基金：

National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Natural Science Foundation of Jilin ProvinceFundamental Research Funds for the Central UniversitiesNational Key Research and Development Program of ChinaNational Key Research and Development Program of Chinathe'Pioneer'and'Leading Goose'R&D Program of ZhejiangNSFCZhejiang Provincial Natural Science FoundationKey Research and Development Program of Zhejiang ProvinceNSFC

项目编号：

619350156217508320230101359JC2020YFB18057002022YFA14049022023C0113962171406Z20F0100182024C01241SD262025504

出版年：

2024

DOI：

10.1093/nsr/nwae116

国家科学评论(英文版)

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ISSN：

年,卷(期)：2024.11(8)