Quantum-correlated photon pair generation in chalcogenide As 2S3 waveguides

C. Xiong*, L. G. Helt, A. C. Judge, G. D. Marshall, M. J. Steel, J. E. Sipe, B. J. Eggleton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


We theoretically investigate the generation of quantum-correlated photon pairs through spontaneous four-wave mixing in chalcogenide As2S 3 waveguides. For reasonable pump power levels, we show that such photonic-chip-based photon-pair sources can exhibit high brightness (≈1 x 109 pairs/s) and high correlation (≈100) if the waveguide length is chosen properly or the waveguide dispersion is engineered. Such a high correlation is possible in the presence of Raman scattering because the Raman profile exhibits a low gain window at a Stokes shift of 7.4 THz, though it is constrained due to multi-pair generation. As the proposed scheme is based on photonic chip technologies, it has the potential to become an integrated platform for the implementation of on-chip quantum technologies.

Original languageEnglish
Pages (from-to)16206-16216
Number of pages11
JournalOptics Express
Issue number15
Publication statusPublished - 19 Jul 2010

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