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Updated: Apr 6, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

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Published on: July 24, 2015

Electrically controllable single-photon switch based on graphene.

Lu Sun, Chun Jiang

|July 21, 2015

Summary

This summary is machine-generated.

We developed an electrically controlled single-photon switch using graphene nanostructures. This device exhibits electromagnetically induced transparency-like effects for efficient single-photon control, achieving high extinction ratios.

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Area of Science:

Quantum optics
Materials science
Nanotechnology

Background:

Single-photon switches are crucial for quantum information processing.
Graphene's unique electronic properties offer potential for novel photonic devices.

Purpose of the Study:

To propose and investigate an electrically controllable single-photon switch.
To explore electromagnetically induced transparency (EIT)-like phenomena in graphene nanostructures for photon control.

Main Methods:

Utilizing a graphene nanoribbon side-coupled to a dynamically modulated graphene nanodisk.
Inducing interband photonic transitions via harmonic modulation of graphene conductivity with gate voltage.

Main Results:

Demonstrated an EIT-like phenomenon enabling single-photon transport control.
Achieved a high extinction ratio of up to 20.8 dB with optimized parameters.
Investigated the impact of coupling strengths and dissipation on device performance.

Conclusions:

The proposed graphene-based device functions as a highly efficient single-photon switch.
Electrically tunable EIT-like effects in graphene nanodisks offer a promising route for advanced photonic devices.