Open AccessEavesdropping on practical QKD system based on six-state protocol
Author(s) -
Jingfeng Liu,
Zhilie Tang,
Renrong Liang,
Li Ling-Yan,
Zhengjun Wei,
Zhixin Chen,
Liao Chang-Jun,
Songhao Liu
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.517
Subject(s) - eavesdropping , quantum key distribution , computer science , quantum cryptography , photon , lossy compression , protocol (science) , transmission (telecommunications) , cryptography , key (lock) , physics , optics , quantum information , quantum , algorithm , computer network , computer security , telecommunications , quantum mechanics , medicine , alternative medicine , pathology , artificial intelligence
Based on practical implementations of quantum cryptography with the attenuated laser pulses as the signal source rather than single photon, as well as lossy channels, detection efficiency, dark count of singlephoton counter, and technological possibilities of a realistic eavesdropping, we discuss a combining eavesdropping strategy of Breidbart basis and beamsplitting, and give a bound on maximum disturbance for a given mean photon number and transmission length for which a secret key can be distilled.