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Description:

Ultrashort polariton wave packets, such as terahertz graphene plasmon polaritons, could be used for fast information processing in integrated circuits. However, conventional optical techniques have struggled to integrate the components for controlling polariton signals and have a low conversion efficiency. Here, we show that graphene plasmon wave packets can be generated, manipulated and read out on-chip using terahertz electronics. Electrical pulses injected into a graphene microribbon through an ohmic contact can be efficiently converted into a plasmon wave packet with a pulse duration as short as 1.2 ps and a three-dimensional spatial confinement of 2.1 × 10−18 m3. The conversion efficiency between the electrical pulses and plasmon wave packets can also reach 35% due to the absence of a momentum mismatch. The transport properties of graphene plasmons are studied by changing the dielectric environments, which provides a basis for designing graphene plasmonic circuits.

Rights:

• http://arxiv.org/licenses/nonexclusive-distrib/1.0/
  

Keyword: Graphene plasmon polaritons, Terahertz electronics, On-chip plasmon generation and manipulation

Date published: 2024-07-17

Publisher: Springer Science and Business Media LLC

Journal:

• Nature Electronics (ISSN: 25201131) vol. 7 issue. 7 p. 537-544

Funding:

• MEXT | Japan Society for the Promotion of Science JP24H00828
• MEXT | Japan Society for the Promotion of Science JP22H00112
• MEXT | Japan Society for the Promotion of Science 21H05233
• MEXT | Japan Society for the Promotion of Science 23H02052
• MEXT | Japan Society for the Promotion of Science 21H05233
• MEXT | Japan Society for the Promotion of Science 23H02052

Manuscript type: Author's original (Submitted manuscript)

MDR DOI:

First published URL: https://doi.org/10.1038/s41928-024-01197-x

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Updated at: 2025-08-02 08:30:37 +0900

Published on MDR: 2025-08-02 08:17:31 +0900