Open AccessMeasurement-device-independent quantum key distribution with odd coherent state
Author(s) -
Dong Chen,
Zhao Shang-Hong,
Ning Zhang,
Dong Woo Yi,
Weihu Zhao,
Yun Liu
Publication year - 2014
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.63.200304
Subject(s) - quantum key distribution , key (lock) , coherent states , computer science , transmission (telecommunications) , measurement device , key generation , photon , state (computer science) , quantum cryptography , statistical physics , physics , quantum mechanics , quantum , telecommunications , algorithm , quantum information , computer security , cryptography , acoustics
Measurement-device-independent quantum key distribution (MDI-QKD) is immune to all the detection attacks, thus when it is combined with the decoy state method, the final key is unconditionally safe. In this paper, we propose to perform MDI-QKD with odd coherent state (OCS) and compare the results with weak coherent source scenario. Our simulation indicates that both the secure key rate and transmission distance can be improved evidently with OCS owing to the lower probability of multi-photon events of the OCS. Furthermore, we apply the finite key analysis to the decoy state MDI-QKD with OCS and obtain a practical key rate.