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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Entangled photon pair generation in an integrated SiC platform.

Anouar Rahmouni1, Ruixuan Wang2, Jingwei Li2

  • 1National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD, 20899, USA. anouar.rahmouni@nist.gov.

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Summary
This summary is machine-generated.

Researchers demonstrate the first entangled photon source on an integrated silicon carbide platform. This breakthrough enables scalable quantum information processing using silicon carbide

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Area of Science:

  • Quantum Information Science
  • Materials Science
  • Photonics

Background:

  • Entanglement is crucial for quantum information processing.
  • Silicon carbide (SiC) offers unique material properties for scalable quantum technologies.
  • Previous SiC research focused on nuclear spin entanglement; entangled photon sources were missing.

Purpose of the Study:

  • To demonstrate the first entangled photon source on an integrated silicon carbide platform.
  • To leverage SiC's properties for advanced quantum information processing.
  • To develop a scalable, chip-based entangled photon source.

Main Methods:

  • Utilizing spontaneous four-wave mixing in a 4H-silicon-carbide-on-insulator microring resonator.
  • Generating photon pairs at telecom C-band wavelengths.
  • Implementing integrated photonics for chip-scale operation.

Main Results:

  • Efficient generation of strongly correlated photon pairs.
  • Achieved a maximum coincidence-to-accidental ratio exceeding 600.
  • Demonstrated energy-time entanglement with >99% fringe visibility.
  • Measured heralded single-photon properties with g(2)(0) ~ 10^-3.

Conclusions:

  • The integrated SiC platform successfully hosts an entangled photon source.
  • This work paves the way for fully integrated, SiC-based quantum applications.
  • The platform is compatible with complementary metal-oxide-semiconductor (CMOS) fabrication.