Academic Journal
Sending or Not-Sending Twin-Field Quantum Key Distribution with Flawed and Leaky Sources
| العنوان: | Sending or Not-Sending Twin-Field Quantum Key Distribution with Flawed and Leaky Sources |
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| المؤلفون: | Yi-Fei Lu, Yang Wang, Mu-Sheng Jiang, Xiao-Xu Zhang, Fan Liu, Hong-Wei Li, Chun Zhou, Shi-Biao Tang, Jia-Yong Wang, Wan-Su Bao |
| المصدر: | Entropy, Vol 23, Iss 9, p 1103 (2021) |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Science LCC:Astrophysics LCC:Physics |
| مصطلحات موضوعية: | twin-field, practical security, loss-tolerant, Science, Astrophysics, QB460-466, Physics, QC1-999 |
| الوصف: | Twin-field quantum key distribution (TF-QKD) has attracted considerable attention and developed rapidly due to its ability to surpass the fundamental rate-distance limit of QKD. However, the device imperfections may compromise its practical implementations. The goal of this paper is to make it robust against the state preparation flaws (SPFs) and side channels at the light source. We adopt the sending or not-sending (SNS) TF-QKD protocol to accommodate the SPFs and multiple optical modes in the emitted states. We analyze that the flaws of the phase modulation can be overcome by regarding the deviation of the phase as phase noise and eliminating it with the post-selection of phase. To overcome the side channels, we extend the generalized loss-tolerant (GLT) method to the four-intensity decoy-state SNS protocol. Remarkably, by decomposing of the two-mode single-photon states, the phase error rate can be estimated with only four parameters. The practical security of the SNS protocol with flawed and leaky source can be guaranteed. Our results might constitute a crucial step towards guaranteeing the practical implementation of the SNS protocol. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1099-4300 76132811 |
| Relation: | https://www.mdpi.com/1099-4300/23/9/1103; https://doaj.org/toc/1099-4300 |
| DOI: | 10.3390/e23091103 |
| URL الوصول: | https://doaj.org/article/3ce0bde6110c4621a761328117cf92f3 |
| رقم الانضمام: | edsdoj.3ce0bde6110c4621a761328117cf92f3 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 10994300 76132811 |
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| DOI: | 10.3390/e23091103 |