On High-Dimensional Twin-Field Quantum Key Distribution

Ronny Mueller; 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

Ronny Mueller^1,2, Mujtaba Zahidy¹, Leif Katsuo Oxenløwe¹, Søren Forchhammer¹, and Davide Bacco²

¹Department of Electrical and Photonics Engineering, Technical University of Denmark, Lyngby, Denmark
²Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy

Published:	2025-10-01, volume 9, page 1869
Editor:	Anna Pappa
Eprint:	arXiv:2405.04207v2
Doi:	https://doi.org/10.22331/q-2025-10-01-1869
Citation:	Quantum 9, 1869 (2025).

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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.

► BibTeX data

@article{Mueller2025highdimensionaltwin,
  doi = {10.22331/q-2025-10-01-1869},
  url = {https://doi.org/10.22331/q-2025-10-01-1869},
  title = {On {H}igh-{D}imensional {T}win-{F}ield {Q}uantum {K}ey {D}istribution},
  author = {Mueller, Ronny and Zahidy, Mujtaba and Oxenl{\o{}}we, Leif Katsuo and Forchhammer, S{\o{}}ren and Bacco, Davide},
  journal = {{Quantum}},
  issn = {2521-327X},
  publisher = {{Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften}},
  volume = {9},
  pages = {1869},
  month = oct,
  year = {2025}
}

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