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Single Photon Sources in Atomically Thin Materials.

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Isolated quantum systems in layered materials offer exciting possibilities for quantum technologies and nanophotonics. This review covers nonclassical light emission from van der Waals crystals and 2D materials, focusing on quantum emitters and their integration potential.

Keywords:
2D materialsTMDCdefectshBNhexagonal boron nitridenanophotonicsquantum informationtransition metal dichalcogenides

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Area of Science:

  • Condensed Matter Physics
  • Quantum Optics
  • Materials Science

Background:

  • Layered materials are crucial for nanoscale light-matter interactions.
  • Quantum emitters like color centers and quantum dots in these materials are key for quantum technologies and nanophotonics.

Purpose of the Study:

  • To review nonclassical light emission from van der Waals crystals and 2D materials.
  • To discuss quantum emitters in transition metal dichalcogenides and hexagonal boron nitride.
  • To explore proof-of-concept experiments for on-chip nanophotonic circuits.

Main Methods:

  • Fabrication and characterization of quantum emitters.
  • Investigation of emission properties.
  • Demonstration of integration with nanophotonic components.

Main Results:

  • Quantum emitters in 2D materials exhibit tunable emission wavelengths.
  • Electrical excitation of quantum emitters is feasible.
  • Successful coupling of emitters to waveguides, cavities, and resonators.

Conclusions:

  • 2D materials provide a promising platform for integrated quantum nanophotonics.
  • Further research is needed to address current challenges and advance the field.