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Quantum Cryptography Security

Fully Passive Quantum Conference Key Agreement

arXiv
Authors: Jinjie Li, Wenyuan Wang, H. F. Chau

Year

2024

Paper ID

65109

Status

Preprint

Abstract Read

~2 min

Abstract Words

92

Citations

0

Abstract

Quantum Conference Key Agreement (CKA) provides a secure method for multi-party communication. A recently developed interference-based prepare-and-measure quantum CKA possesses the advantages of measurement-device-independence, namely, being immune to side-channels from the detector side. Besides, it achieves good key rate performance, especially for high-loss channels, due to the use of single photon interference. Meanwhile, several fully passive QKD schemes have been proposed, which eliminate all side channels from the source modulation side. We extend the fully passive idea to an interference-based CKA, which has a high level of implementation security for many-user communication.

Why This Paper Matters

  • This paper contributes to the Quantum Cryptography & Security research area in the Quantum Articles archive.
  • It adds a 2024 reference point for readers tracking recent quantum research.
  • Quantum Conference Key Agreement (CKA) provides a secure method for multi-party communication.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2407.15761 [2] arXiv https://arxiv.org/abs/2407.15761 [3] Publisher https://arxiv.org/abs/2407.15761

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External citation index: OpenAlex citation signal • updated 2026-06-11 23:07:15

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