On-chip transfer of ultrashort graphene plasmon wavepackets using terahertz electronics

Abstract

Steering transport of ultrashort polariton wavepackets is essential for achieving on-chip integrated nanocircuits with tightly confined electromagnetic fields towards ultrafast information processing. However, conventional optical techniques have struggled to integrate the necessary components for transferring polariton signals. Here, we address this challenge by electrically generating, manipulating, and reading out terahertz graphene plasmon-polariton wavepackets on-chip. By injecting an electrical pulse into graphene via an ohmic contact, we achieve coherent conversion of the pulse into a plasmon wavepacket exhibiting a pulse duration of 1.2 ps and extreme three-dimensional spatial confinement within a volume of $2.1\times 10^{-18}{m}^3$. We reveal the transport properties of plasmons along graphene ribbons in different dielectric environments, providing a basis for designing graphene plasmonic circuits. Furthermore, we find that the conversion efficiency between the electrical pulses and plasmon wavepackets reaches ~30% thanks to the absence of a momentum mismatch. With unprecedented controllability, our platform represents a significant advance in on-chip handling of plasmonic signals in various van der Waals heterostructures.

20 pages, 5 figures, Supplementary information

References in corpus (16)

• Graphene plasmonics
• Graphene Plasmonics for Terahertz to Mid-Infrared Applications
• Photonic crystals for nano-light in moiré graphene superlattices
• Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
• Far-field Excitation of Single Graphene Plasmon Cavities with Ultra-compressed Mode-volumes
• Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
• Ultrafast intrinsic optical-to-electrical conversion dynamics in graphene photodetector
• Efficient Fizeau Drag from Dirac electrons in monolayer graphene
• Electro-optical graphene plasmonic logic gates
• Real-space imaging of acoustic plasmons in large-area CVD graphene
• Emission and Coherent Control of Levitons in Graphene
• On-chip terahertz modulation and emission with integrated graphene junctions
• On-chip coherent frequency-domain THz spectroscopy for electrical transport
• Nonlinear quantum logic with colliding graphene plasmons
• Ultrashort electron wavepackets via frequency-comb synthesis
• Effects of Screening on Propagation of Graphene Surface Plasmons

Cited by in corpus (6)

• Multidimensional Terahertz Probes of Quantum Materials
• Cavity electrodynamics of van der Waals heterostructures
• Monolithic optoelectronic circuit design for on-chip terahertz applications
• Frequency Dependence of Phonon-Induced Current Noise in ArmchairCarbon Nanotube
• Eigenstate control of plasmon wavepackets with electron-channel blockade
• Cavity-Driven Attractive Interactions in Quantum Materials