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  4. Generation of infrared photon pairs by spontaneous four-wave mixing in a CS2-filled microstructured optical fiber
 
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January 10, 2024
Journal Article
Title

Generation of infrared photon pairs by spontaneous four-wave mixing in a CS2-filled microstructured optical fiber

Abstract
We experimentally demonstrate frequency non-degenerate photon-pair generation via spontaneous four-wave mixing from a novel CS2-filled microstructured optical fiber. CS2 has high nonlinearity, narrow Raman lines, a broad transmission spectrum, and also has a large index contrast with the microstructured silica fiber. We can achieve phase matching over a large spectral range by tuning the pump wavelength, allowing the generation of idler photons in the infrared region, which is suitable for applications in quantum spectroscopy. Moreover, we demonstrate a coincidence-to-accidental ratio of larger than 90 and a pair generation efficiency of about 10 - 2 per pump pulse, which shows the viability of this fiber-based platform as a photon-pair source for quantum technology applications.
Author(s)
Afsharnia, Mina
Junaid, Saher
Saravi, Sina
Chemnitz, Mario
Wondraczek, Katrin
Pertsch, Thomas  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Schmidt, Markus A.
Setzpfandt, Frank  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Journal
Scientific Reports  
Open Access
DOI
10.1038/s41598-024-51482-0
Additional full text version
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Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Keyword(s)
  • quantum optics

  • glass fiber

  • silicon dioxide

  • nonlinear optics

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