On High-Dimensional Twin-Field Quantum Key Distribution

Ronny Müller; Mujtaba Zahidy; Leif Katsuo Oxenløwe; Søren Forchhammer; Davide Bacco

doi:10.22331/q-2025-10-01-1869

On High-Dimensional Twin-Field Quantum Key Distribution

Quantum Physics 2025-10-01 v2

Authors: Ronny Müller , Mujtaba Zahidy , Leif Katsuo Oxenløwe , Søren Forchhammer , Davide Bacco

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Abstract

Twin-Field Quantum Key Distribution (QKD) is a QKD protocol that uses single-photon interference to perform QKD over long distances. QKD protocols that encode information using high-dimensional quantum states can benefit from increased key rates and higher noise resilience. We define the essence of Twin-Field QKD and explore its generalization to higher dimensions. Further, we show that, ultimately, the Twin-Field protocol cannot be generalized to higher dimensions in accordance with our definition.

Keywords

quantum key distribution quantum networks quantum cryptography

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@article{arxiv.2405.04207,
  title  = {On High-Dimensional Twin-Field Quantum Key Distribution},
  author = {Ronny Müller and Mujtaba Zahidy and Leif Katsuo Oxenløwe and Søren Forchhammer and Davide Bacco},
  journal= {arXiv preprint arXiv:2405.04207},
  year   = {2025}
}

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21 pages, 1 figure

On High-Dimensional Twin-Field Quantum Key Distribution

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