Experimental quantum key distribution with an untrusted source

Xiang Peng; Hao Jiang; Bingjie Xu; Xiongfeng Ma; Hong Guo

doi:10.1364/OL.33.002077

Experimental quantum key distribution with an untrusted source

Quantum Physics 2009-11-13 v2

Authors: Xiang Peng , Hao Jiang , Bingjie Xu , Xiongfeng Ma , Hong Guo

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Abstract

The photon statistics of a quantum key distribution (QKD) source is crucial for security analysis. In this paper, we propose a practical method, with only a beam splitter and photodetector involved, to monitor the photon statistics of a QKD source. By implementing in a Plug&Play QKD system, we show that the method is highly practical. The final secure key rate is 52 bit/s, comparing to 78 bit/s when the source is treated as a trusted source.

Keywords

quantum key distribution quantum cryptography

Cite

@article{arxiv.0806.1671,
  title  = {Experimental quantum key distribution with an untrusted source},
  author = {Xiang Peng and Hao Jiang and Bingjie Xu and Xiongfeng Ma and Hong Guo},
  journal= {arXiv preprint arXiv:0806.1671},
  year   = {2009}
}

Comments

8 pages, 3 figures

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