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Room-Temperature Quantum Emitter in Aluminum Nitride.

Sam G Bishop1, John P Hadden1, Faris D Alzahrani1

  • 1School of Engineering and School of Physics and Astronomy, Cardiff University, Queen's Building, The Parade, Cardiff, CF24 3AA, United Kingdom.

ACS Photonics
|September 9, 2020
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new room-temperature quantum emitter in aluminum nitride. This solid-state light source is bright, pure, and polarized, paving the way for advanced quantum technologies.

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Area of Science:

  • Solid-state physics
  • Quantum optics
  • Materials science

Background:

  • Single-photon sources are crucial for quantum technologies.
  • Existing solid-state emitters include quantum dots and defects in 2D materials.
  • There is a need for efficient room-temperature quantum emitters.

Purpose of the Study:

  • To discover and characterize a novel room-temperature quantum emitter.
  • To investigate its potential for quantum applications.

Main Methods:

  • Spectral analysis
  • Polarization measurements
  • Photon-counting time-resolved measurements
  • Characterization of color centers in aluminum nitride

Main Results:

  • Discovery of a quantum emitter within the band gap of aluminum nitride.
  • Demonstration of bright (>10^5 counts s^-1) quantum light emission.
  • Observation of high purity (g(2)(0) < 0.2) and polarized emission.
  • Room-temperature operation of the quantum emitter.

Conclusions:

  • Aluminum nitride hosts a promising room-temperature quantum emitter.
  • The demonstrated properties are suitable for various quantum technologies.
  • This finding advances the development of solid-state quantum light sources.