Experimental quantum-key distribution with an untrusted source
Xiang Peng, Hao Jiang, Bingjie Xu +2 more
The photon statistics of a quantum-key-distribution (QKD) source are crucial for security analysis. We propose a practical method, with only a beam splitter and a photodetector, to monitor the photon statistics of a QKD source. By implementing in a plug and play QKD system, we show that the method is highly practical. The final secure key rate is 52 bit/s, compared to 78 bit/s when the source is treated as a trusted source.
arXiv:0806.1671•Optics Letters•Sep 8, 2008•40 citations