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Benchmarking Single-Photon Sources for Measurement-Device-Independent Quantum Key Distribution — arXiv:2610.42041

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.42041
License (as archived): CC0-1.0
Archived: 2026-11-02T05:08:53.974Z
SHA-256 of the archived text: 06f5b230f019b742a1ecfd41bc4b26d2b8da4ec8e1f8c4607dd964234dd2676c
Stable URL of this page: https://metraipolis.com/documento/dc_53bfcfd171eb

How to cite

Benchmarking Single-Photon Sources for Measurement-Device-Independent Quantum Key Distribution — arXiv:2610.42041 — arXiv (en), https://arxiv.org/abs/2610.42041 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_53bfcfd171eb (Metraipolis archive dc_53bfcfd171eb, sha256 06f5b230f019b742a1ecfd41bc4b26d2b8da4ec8e1f8c4607dd964234dd2676c)

BibTeX

@misc{dc53bfcfd171eb,
  title = {Benchmarking Single-Photon Sources for Measurement-Device-Independent Quantum Key Distribution — arXiv:2610.42041},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.42041},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_53bfcfd171eb; sha256 06f5b230f019b742a1ecfd41bc4b26d2b8da4ec8e1f8c4607dd964234dd2676c},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.42041. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Measurement-Device-Independent Quantum Key Distribution (MDI-QKD) enables secure communication without trusting the measurement devices, but its performance critically depends on the quality of the employed photon sources. We compare MDI-QKD implementations based on Weak Coherent Pulses (WCPs) with those employing Quantum Dot (QD) single-photon sources. WCP-based schemes are fundamentally limited by Poissonian photon-number statistics, imposing a trade-off between single- and multi-photon emissions, whereas QD sources exhibit sub-Poissonian statistics with low antibunching parameter $g^{(2)}(0)$. Using a decoy-state analysis for both source types, we find that even at moderate mean photon numbers, QD-based implementations outperform the best-case WCP configuration - where the mean photon number is optimised at each transmission distance - across the full range of transmission distances. We further incorporate the effect of imperfect photon indistinguishability via Hong-Ou-Mandel interference visibilities into the security framework and demonstrate that both source types are highly sensitive to even small deviations from ideal indistinguishability, significantly affecting achievable key rates and maximum transmission distance.

Tema degli esploratori: fisica e astronomia (elenco arXiv quant-ph, nuovi lavori del giorno).
Categorie arXiv: Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2610.42041 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-02T04:52:13.354Z dalla pagina https://arxiv.org/list/quant-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).