General sending-or-not-sending twin field protocol for quantum key distribution with asymmetric source parameters

Xiao-Long Hu; Cong Jiang; Zong-Wen Yu; Xiang-Bin Wang

doi:10.1103/PhysRevA.100.062337

General sending-or-not-sending twin field protocol for quantum key distribution with asymmetric source parameters

Quantum Physics 2020-01-01 v1

Authors: Xiao-Long Hu , Cong Jiang , Zong-Wen Yu , Xiang-Bin Wang

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Abstract

The sending-or-not-sending (SNS) protocol of the twin-field quantum key distribution (TFQKD) can tolerant large misalignment error and its key rate can exceed the bound of repeaterless QKD. But the original SNS protocol requires the two users to use the same source parameters. Here we propose a general protocol with asymmetric source parameters and give the security proof of this protocol. Our general protocol has a much better performance than that of the original SNS protocol when the channel of the system is asymmetric.

Keywords

quantum key distribution

Cite

@article{arxiv.1908.05073,
  title  = {General sending-or-not-sending twin field protocol for quantum key distribution with asymmetric source parameters},
  author = {Xiao-Long Hu and Cong Jiang and Zong-Wen Yu and Xiang-Bin Wang},
  journal= {arXiv preprint arXiv:1908.05073},
  year   = {2020}
}

Comments

submitted to PRA on Aug. 12

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