Efficient scheme for passive decoy-state reference-frame-independent quantum key distribution

Publication date: Available online 5 November 2018Source: Physics Letters AAuthor(s): Jian-Rong Zhu, Chun-Mei Zhang, Qin WangAbstractReference-frame-independent quantum key distribution (RFI-QKD) has been demonstrated to be reliable and useful both in theories and experiments, which is intrinsically robust against slowly varying reference frames. In this paper, we propose an efficient scheme of passive decoy-state RFI-QKD based on the parametric down-conversion source, where a beam splitter splits the idler pulses into four local detection events to improve the performance of RFI-QKD systems. In addition, we demonstrate the worst relative rotation of reference frames in our scheme. Simulation results show that our scheme can achieve good performance even at the worst-case scenario.

Source: Physics Letters A - November 6, 2018 Category: Physics Source Type: research