Mode-Entanglement in Silicon Waveguides Through Intermodal Four-Wave Mixing

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Silicon photonics is rapidly emerging as a promising, scalable platform for quantum information applications. As the technology matures, sources of high-quality quantum-optical states are increasingly important. We discuss the use of intermodal four-wave mixing in silicon waveguides for creating entangled photon pairs. We describe a framework to numerically analyze the state of produced photon pairs and discuss a scheme for generating photon pairs that are purely entangled in their transverse waveguide mode. Using this scheme, we find a theoretical fidelity of 99.6 % to a true Bell state in the transverse mode with no spectral correlations.
Original languageEnglish
Article number9964077
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number1
Number of pages9
Publication statusPublished - 1 Jan 2022


  • Entanglement
  • Quantum photonics
  • Silicon photonics
  • Waveguide modes


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