Experimental study demonstrates high-brightness single-photon generation using a waveguide platform, indicating strong viability for wavelength-multiplexed quantum networking.
We report a fibre-integrated heralded single-photon source based on a commercial Zn-indiffused MgO:PPLN ridge waveguide operated in Type-0 degenerate spontaneous parametric down-conversion (SPDC). The device emits a broadband spectrum spanning approximately 70 nm across the telecom C-and L-bands, with an absolute brightness of 9.1× 10⁹ pairs/(s mW). After accounting for optical losses, we determine an internal heralding efficiency of 58(5)%. The source maintains high purity, exhibiting a coincidences-to-accidentals ratio exceeding 9× 10⁴ and a heralded second-order correlation of gₕ⁽²⁾(0) = (5.53 ± 0.46)× 10⁻⁴. Low multi-photon noise and broadband emission demonstrate the viability of such platforms for wavelength-multiplexed quantum networking.
No takes yet. Share an insight, caveat, or question.
Iveson et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: