Multichannel photon-pair generation using hydrogenated amorphous silicon waveguides

Ke Yao Wang, Vesselin G. Velev, Kim Fook Lee, Abijith S. Kowligy, Prem Kumar, Mark A. Foster, Amy C. Foster, Yu Ping Huang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


We demonstrate highly efficient photon-pair generation using an 8 mm long hydrogenated amorphous silicon (a-Si: H) waveguide in far-detuned multiple wavelength channels simultaneously, measuring a coincidence-to-accidental ratio as high as 400. We also characterize the contamination from Raman scattering and show it to be insignificant over a spectrum span of at least 5 THz. Our results highlight a-Si:H as a potential high-performance, CMOS-compatible platform for large-scale quantum applications, particularly those based on the use of multiplexed quantum signals.

Original languageEnglish (US)
Pages (from-to)914-917
Number of pages4
JournalOptics Letters
Issue number4
StatePublished - Feb 15 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Multichannel photon-pair generation using hydrogenated amorphous silicon waveguides'. Together they form a unique fingerprint.

Cite this