Optoelectronics Letters, Volume. 17, Issue 10, 636(2021)
Four-state reference-frame-independent quantum key distribution using heralded pair-coherent sources with source flaws
We propose a four-state reference-frame-independent quantum key distribution (RFI-QKD) protocol with the heralded pair-coherent source (HPCS). We investigate the performance of the proposed protocol and simulation results show that our protocol can achieve a high key generation rate in long-distance transmission, taking source flaws and statistical fluctuations into consideration. Although fewer states are used, this protocol not only has a higher key generation rate at the same transmission distance but also a longer transmission distance with the same secure communication compared with the original six-state RFI-QKD protocol using the weak coherent source (WCS).
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FENG Bao, ZHAO Ziyan, YANG Shunyu, DOU Tianqi, LI Zhenhua, WANG Jipeng, SUN Zhongqi, ZHOU Fen, HAN Yanxin, HUANG Yuqing, MA Haiqiang. Four-state reference-frame-independent quantum key distribution using heralded pair-coherent sources with source flaws[J]. Optoelectronics Letters, 2021, 17(10): 636
Received: Dec. 11, 2020
Accepted: Feb. 2, 2021
Published Online: Jan. 10, 2022
The Author Email: Haiqiang MA (hqma@bupt.edu.cn)