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PreprintarXiv licencearXiv

A Fibre-Integrated SPDC Heralded Single-Photon Source Using Zn-Indiffused PPLN Ridge Waveguides at Telecom Wavelengths

  • Peter Iveson
  • Paolo L. Mennea
  • Goronwy Tawy
  • Rex H. S. Bannerman
  • Noe Palomar-Davidson
  • Lewis D. Wright
  • Patrick M. Ledingham
  • Peter G. R. Smith
  • James C. Gates
  • Corin B. E. Gawith
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Abstract

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.

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Cite

BibTeXRIS
BibTeX
@misc{iveson2026fibreintegrated,
  title = {{A Fibre-Integrated SPDC Heralded Single-Photon Source Using Zn-Indiffused PPLN Ridge Waveguides at Telecom Wavelengths}},
  author = {Peter Iveson and Paolo L. Mennea and Goronwy Tawy and Rex H. S. Bannerman and Noe Palomar-Davidson and Lewis D. Wright and Patrick M. Ledingham and Peter G. R. Smith and James C. Gates and Corin B. E. Gawith},
  howpublished = {arXiv},
  year = {2026},
  month = jul,
  doi = {10.48550/arxiv.2607.13215},
  eprint = {2607.13215},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.13215},
}
RIS
TY  - UNPB
TI  - A Fibre-Integrated SPDC Heralded Single-Photon Source Using Zn-Indiffused PPLN Ridge Waveguides at Telecom Wavelengths
AU  - Peter Iveson
AU  - Paolo L. Mennea
AU  - Goronwy Tawy
AU  - Rex H. S. Bannerman
AU  - Noe Palomar-Davidson
AU  - Lewis D. Wright
AU  - Patrick M. Ledingham
AU  - Peter G. R. Smith
AU  - James C. Gates
AU  - Corin B. E. Gawith
PY  - 2026
DA  - 2026/07/14
PB  - arXiv
DO  - 10.48550/arxiv.2607.13215
UR  - https://arxiv.org/abs/2607.13215
AB  - 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× 10^9 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× 10^4 and a heralded second-order correlation of g_h^(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.
ER  -