2008/06/30 by Xiang Peng, Hao Jiang, Bingjie Xu +2 · 1 citation
Computer Science · Physics and Astronomy · #Advanced Statistical Modeling Techniques #Beam (structure) #Beam splitter #Cryptography #Key (lock) #Photon #Photon counting #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum cryptography #Quantum key distribution #quant-ph
paper · pdf · doi:10.1364/ol.33.002077
published as Optics Letters, Vol. 33, Issue 18, pp. 2077-2079 · 8 pages, 3 figures
openalex publication_date 2008/09/08 · arxiv created 2008/09/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.