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

Jia-Hao Li; Yang Xue; Lei Shi

doi:10.1117/12.2641171

15 December 2022 Simplified scheme for passive decoy-state reference-frame-independent quantum key distribution

Jia-Hao Li, Yang Xue, Lei Shi

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 1247802 (2022) https://doi.org/10.1117/12.2641171
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

Reference-frame-independent quantum key distribution (RFI-QKD) has been proven to be intrinsically robust against slowly varying reference frames under realistic environment. In this paper, we propose a simplified scheme for the passive decoy-state RFI-QKD considering the afterpulsing effect. We investigated the system performance with the weak coherent source (WCS) and parametric down conversion (PDC) source, respectively. Numerical simulation results show that the simplified scheme can achieve comparable secure key rate with the active decoy-state scheme. Our scheme is advantageous to simplify the system implementation and reduces the time cost. Besides, it is proven that the afterpulsing effect plays dominant role in the system. Our work could provide a useful solution for RFI-QKD in practical situations.

Citation Download Citation

Jia-Hao Li, Yang Xue, and Lei Shi "Simplified scheme for passive decoy-state reference-frame-independent quantum key distribution", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 1247802 (15 December 2022); https://doi.org/10.1117/12.2641171

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