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Title: Terahertz topological photonics for on-chip communication
Authors: Yang, Yihao
Yamagami, Yuichiro
Yu, Xiongbin
Pitchappa, Prakash
Webber, Julian
Zhang, Baile
Fujita, Masayuki
Nagatsuma, Tadao
Singh, Ranjan
Keywords: Science::Physics::Optics and light
Issue Date: 2020
Source: Yang, Y., Yamagami, Y., Yu, X., Pitchappa, P., Webber, J., Zhang, B., ... Singh, R. (2020). Terahertz topological photonics for on-chip communication. Nature Photonics. doi:10.1038/s41566-020-0618-9
Project: MOE2017-T2-1-110
Journal: Nature Photonics
Abstract: The realization of integrated, low-cost and efficient solutions for high-speed, on-chip communication requires terahertz-frequency waveguides and has great potential for information and communication technologies, including sixth-generation (6G) wireless communication, terahertz integrated circuits, and interconnects for intrachip and interchip communication. However, conventional approaches to terahertz waveguiding suffer from sensitivity to defects and sharp bends. Here, building on the topological phase of light, we experimentally demonstrate robust terahertz topological valley transport through several sharp bends on the all-silicon chip. The valley kink states are excellent information carriers owing to their robustness, single-mode propagation and linear dispersion. By leveraging such states, we demonstrate error-free communication through a highly twisted domain wall at an unprecedented data transfer rate (exceeding ten gigabits per second) that enables real-time transmission of uncompressed 4K high-definition video (that is, with a horizontal display resolution of approximately 4,000 pixels). Terahertz communication with topological devices opens a route towards terabit-per-second datalinks that could enable artificial intelligence and cloud-based technologies, including autonomous driving, healthcare, precision manufacturing and holographic communication.
ISSN: 1749-4893
DOI: 10.1038/s41566-020-0618-9
Rights: © 2020 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. This paper was published in Nature Photonics and is made available with permission of Macmillan Publishers Limited, part of Springer Nature.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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