title: Multichannel photon-pair generation using hydrogenated amorphous silicon waveguides.
abstract: 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.
authors.forename: Ke-Yao
authors.initials: KY
authors.lastname: Wang
authors.forename: Vesselin G
authors.initials: VG
authors.lastname: Velev
authors.forename: Kim Fook
authors.initials: KF
authors.lastname: Lee
authors.forename: Abijith S
authors.initials: AS
authors.lastname: Kowligy
authors.forename: Prem
authors.initials: P
authors.lastname: Kumar
authors.forename: Mark A
authors.initials: MA
authors.lastname: Foster
authors.forename: Amy C
authors.initials: AC
authors.lastname: Foster
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Huang