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Electrically Driven Site-Controlled Single Photon Source.

Shi Guo1, Savvas Germanis2, Takashi Taniguchi3

  • 1Department of Physics and Astronomy, University of Exeter, Exeter EX4 4QL, United Kingdom.

ACS Photonics
|August 21, 2023
PubMed
Summary
This summary is machine-generated.

We developed a novel device for single photon sources using gold pillars in a 2D material heterostructure. This allows precise control over single photon emission for quantum technologies.

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Area of Science:

  • Quantum optics
  • Materials science
  • Condensed matter physics

Background:

  • Single photon sources are crucial for quantum communication and computing.
  • Existing methods face challenges in precise control and integration.

Purpose of the Study:

  • To present a novel device geometry for site-controlled single photon emitters.
  • To demonstrate electrical pumping and energy tuning of these emitters.

Main Methods:

  • Fabrication of a van der Waals heterostructure with gold pillars.
  • Integration of graphene, hexagonal boron nitride, and tungsten diselenide.
  • Electrical characterization of single photon emission properties.

Main Results:

  • Simultaneous positional control and electrical pumping of single photon emitters.
  • Electrical control of emission energy with shifts up to 40 meV.
  • Demonstrated influence of hexagonal boron nitride thickness on electroluminescence and energy tuning.

Conclusions:

  • The proposed device geometry offers a pathway for scalable quantum technology development.
  • Electrical control over single photon emitter properties is achievable.
  • This work advances the engineering of quantum light sources.