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New electronic metadevices overcome semiconductor limitations for terahertz frequencies. These active devices enable ultrafast switches and amplifiers, promising faster wireless networks and 6G telecommunications.

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Area of Science:

  • Terahertz electronics
  • Metamaterials science
  • Semiconductor device physics

Background:

  • Semiconductor devices face performance limitations above 100 GHz, hindering data-driven demands and wireless network advancements.
  • Electronic metadevices, inspired by optical metamaterials, offer a potential solution to surpass traditional semiconductor device limitations.

Purpose of the Study:

  • To demonstrate the critical aspects and potential of three-terminal active metadevices for next-generation telecommunication circuits.
  • To showcase the development of picosecond terahertz switches and active devices for ultrafast electronics.

Main Methods:

  • Demonstration of three-terminal active metadevices.
  • Monolithic integration of electronic metadevices.
  • Characterization of linear and nonlinear operation, insertion loss, and isolation.

Main Results:

  • Near-ideal linear and nonlinear operation of electronic metadevices, approaching material limits.
  • Development of picosecond terahertz switches with low insertion loss and high isolation.
  • Demonstration of parametric amplification and active mixing with ultrawideband operation exceeding 40 Gbps data rates.

Conclusions:

  • Electronic metadevices provide a promising solution for future ultrafast electronics.
  • The developed metadevices are suitable for 6G telecommunications and enable new functional devices.
  • This work paves the way for overcoming current performance bottlenecks in high-frequency electronics.