Abstract
Reference-frame-independent measurement-device-independent quantum key distribution (RFI-MDI-QKD) can eschew the alignment of reference frames in practical systems and defeat all potential detector side channel attacks. Here, we propose the decoy-state RFI-MDI-QKD protocol with biased bases. In this protocol, two legitimate parties Alice and Bob prepare signal states in
$Z$
,
$X$
, and
$Y$
bases and decoy states in
$X$
and
$Y$
bases, which avoids the futility in
$Z$
basis for decoy states and simplifies the operation of existing systems. Considering the security against coherent attacks with statistical fluctuations, we investigate the performance of the decoy-state RFI-MDI-QKD protocol with biased bases in the environment of unknown and slowly drifting reference frames and make comparisons with the original decoy-state RFI-MDI-QKD protocol under the same conditions. Simulation results show that the proposed protocol can increase the achievable secret key rate and transmission distance obviously compared with the original protocol, which is very promising in real-life QKD systems.
PDF Article
More Like This
Reference-frame-independent measurement-device-independent quantum key distribution with mismatched-basis statistics
Zhenhua Li, Hongwei Liu, Jipeng Wang, Shunyu Yang, Tianqi Dou, Wenxiu Qu, Fen Zhou, Yuqing Huang, Zhongqi Sun, Yanxin Han, Guoxing Miao, and Haiqiang Ma
Opt. Lett. 45(22) 6334-6337 (2020)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription