Content area

Abstract

Translate

Quantum key distribution (QKD) could help to share secure key between two distant peers. In recent years, twin-field (TF) QKD has been widely investigated because of its long transmission distance. One of the popular variants of TF QKD is sending-or-not-sending (SNS) QKD, which has been experimentally verified to realize 1000-km level fibre key distribution. In this article, the authors introduce phase postselection into the SNS protocol. With this modification, the probability of selecting "sending" can be substantially improved. The numerical simulation shows that the transmission distance can be improved both with and without the actively odd-parity pairing method. With discrete phase randomization, the variant can have both a larger key rate and a longer distance.

Details

1009240
Subject
Quantum cryptography
URL
http://arxiv.org/abs/2401.02304
Title
Sending-or-not-sending quantum key distribution with phase postselection
Author
Yang-Guang, Shan; Zhou, Yao; Zhen-Qiang Yin; Wang, Shuang; Chen, Wei; De-Yong, He; Guo, Guang-Can; Zheng-Fu, Han
Publication title
arXiv.org; Ithaca
Publication year
2024
Publication date
Jan 10, 2024
Section
Quantum Physics
Publisher
Cornell University Library, arXiv.org
Source
arXiv.org
Place of publication
Ithaca
Country of publication
United States
University/institution
Cornell University Library arXiv.org
Publication subject
Biology, Statistics, Physics, Mathematics, Engineering--Electrical Engineering, Computers--Computer Engineering, Business And Economics--Banking And Finance
e-ISSN
2331-8422
Source type
Working Paper
Language of publication
English
Document type
Working Paper
Publication history
 
 
Online publication date
2024-01-11
Milestone dates
2024-01-04 (Submission v1); 2024-01-10 (Submission v2)
Publication history
 
 
   First posting date
11 Jan 2024
ProQuest document ID
2910704293
Document URL
https://www.proquest.com/working-papers/sending-not-quantum-key-distribution-with-phase/docview/2910704293/se-2?accountid=208611
Full text outside of ProQuest
http://arxiv.org/abs/2401.02304
Copyright
© 2024. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Last updated
2024-01-12
Database
ProQuest One Academic