Open AccessQuantum key distribution system based on combined modulation
Author(s) -
BH Guo,
Li Yang,
Xiang Cheng,
Chaoliang Guan,
La Wu,
Liu Sh
Publication year - 2013
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.62.130303
Subject(s) - quantum key distribution , modulation (music) , computer science , phase modulation , key (lock) , continuous phase modulation , electronic engineering , physics , photon , optics , telecommunications , phase noise , engineering , computer security , acoustics
We suggest a combined modulation quantum key distribution (QKD) system which encodes each single-photon signal with both phase modulation and polarization modulation. With the aid of dual-velocity protocol of hybrid QKD system, we construct a scheme to realize this combined modulation QKD which generates two-bit key with one signal for increasing the efficiency of QKD. We also develop a combined modulation Michelson QKD system, then solve the stability problem of the combined modulation QKD system in principle.