Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session K13: Integrated Photonics
3:00 PM–5:48 PM,
Tuesday, March 5, 2024
Room: M100D
Sponsoring
Unit:
FIAP
Chair: Shriram Ramanathan, Rutgers University
Abstract: K13.00012 : Towards a heralded single-photon source from nitrogen molecule defects in silicon nitride waveguides*
5:12 PM–5:24 PM
Presenter:
Kathleen Oolman
(University of Illinois Urbana-Champaign)
Authors:
Kathleen Oolman
(University of Illinois Urbana-Champaign)
Kai Shinbrough
(University of Illinois Urbana-Champaign)
Mengdi Zhao
(University of Illinois Urbana-Champaign)
Kejie Fang
(University of Illinois Urbana-Champaign)
Offir Cohen
(University of Illinois Urbana-Champaign)
Virginia O Lorenz
(University of Illinois Urbana-Champaign)
In this work, we investigate an integrated DLCZ single-photon source using interstitial nitrogen molecules trapped in as-grown amorphous silicon nitride waveguides. We show experimental progress demonstrating photon-pair generation in a phase-mismatched waveguide. Using mode propagation simulations in a waveguide, we develop a dual-wavelength experimental scheme. This scheme improves the photon-pair generation rate through satisfying phase matching and reduces sources of error from spontaneous four-wave mixing, supercontinuum generation, and photoluminescence. Finally, we discuss progress characterizing the photon purity from nitrogen defect emission with second-order coherence function autocorrelation and cross-correlations with quantum applications in mind.
*This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE – 1746047. We acknowledge funding from NSF (Award No. 2207822).
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