Phase-matching quantum key distribution based on pulse-position modulation

被引：4
|
作者：
Yu, Bingjie [1 ]
Mao, Qianping [1 ,2 ]
Zhu, Xiaomei [1 ]
Yu, Yang [2 ]
Zhao, Shengmei [2 ]
机构：
[1] Nanjing Tech Univ, Coll Comp Sci & Technol, Nanjing 211816, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Minist Educ, Key Lab Broadband Wireless Commun & Sensor Networ, Nanjing 210003, Peoples R China
来源：
PHYSICS LETTERS A | 2021年 / 418卷
基金：
中国国家自然科学基金;
关键词：
Pulse-position modulation; Phase-matching quantum key distribution; High-dimensional coding; UNCONDITIONAL SECURITY;
D O I：
10.1016/j.physleta.2021.127702
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In order to further improve the performance of the phase-matching quantum key distribution (PM-QKD) protocol, in this paper, a more efficient protocol named PPM-PM-QKD is proposed which adopts pulse position modulation (PPM) to realize the high-dimensional encoding. PPM technology utilizes the empty pulses in the weak coherent source, and can improve the performance of the protocol. The simulation results show the improvement compared with the original PM-QKD protocol. Moreover, the protocol inherits the advantages of the original PM-QKD protocol, and it can not only exceed the PLOB bound, but also has a higher robust to noise and channel disturbance. (C) 2021 Elsevier B.V. All rights reserved.
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页数：5
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