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Updated: May 28, 2025
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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
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Spontaneous Emission Mediated by Moiré Hyperbolic Metasurfaces
Yuying Liu1, Zhanrong Yang1, Tongbiao Wang1
1School of Physics and Materials Science, Nanchang University, Nanchang 330031, China.
Nanomaterials (Basel, Switzerland)
|February 13, 2025
Summary
We show that twisted graphene hyperbolic metasurfaces enhance quantum emitter spontaneous emission via moiré hyperbolic plasmon polaritons. Emission is tunable via graphene properties, spacer thickness, and twist angle, with maximum enhancement at topological transitions.
Area of Science:
- Condensed Matter Physics
- Quantum Optics
- Nanophotonics
Background:
- Quantum emitters near nanostructures exhibit modified spontaneous emission.
- Hyperbolic metasurfaces (HMTSs) support unique plasmonic modes.
- Twisted van der Waals heterostructures offer novel physical properties.
Purpose of the Study:
- To investigate spontaneous emission enhancement of quantum emitters near twisted graphene HMTSs.
- To explore the role of moiré hyperbolic plasmon polaritons (HPPs) in this enhancement.
- To analyze the tunability of spontaneous emission by structural and material parameters.
Main Methods:
- Numerical simulations of quantum emitter spontaneous emission rates.
- Analysis of electromagnetic field confinement and enhancement.
- Investigation of moiré hyperbolic plasmon polaritons (HPPs) in twisted graphene HMTSs.
Main Results:
- Distinct enhancement of spontaneous emission due to moiré HPPs.
- Efficient modulation of emission decay rate by graphene chemical potential, dielectric spacer thickness, and twist angle.
- Maximum spontaneous emission observed at topological transitions.
Conclusions:
- Twisted graphene HMTSs provide a versatile platform for controlling quantum emitter spontaneous emission.
- The findings extend studies of twisted photonic structures and have implications for optical sensing and integrated photonics.
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