基于自由空间光学的量子密钥分配系统性能研究

IF 3.1 3区物理与天体物理 Q2 Engineering

Optik Pub Date : 2025-09-18 DOI:10.1016/j.ijleo.2025.172535

Aanchal Sharma, Sanmukh Kaur

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引用次数: 0

摘要

量子密钥分发（QKD）提供了无与伦比的加密级别，确保了安全的通信通道，可以抵抗窃听和黑客攻击。随着安全威胁的不断发展，QKD系统代表了一个根本性的转变，旨在为高风险应用提供强大的、面向未来的安全解决方案。在这项工作中，我们提出了在不同天气条件下通过自由空间光学（FSO）链路的QKD系统的建模和仿真框架。考虑到贝尼特-布拉萨1984 （BB84）、相干单向（COW）和皮兰多拉、劳伦扎、奥塔维亚尼和班奇（PLOB）界作为理论基准，从安全密钥率和量子误码率（QBER）作为信道损耗和传输范围的函数的角度研究了系统的性能。考虑BB84协议，在雾和雨的影响下，QBER和接收功率也作为链路距离的函数进行了检验。

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Performance investigation of quantum key distribution system through free-space optics

Quantum key distribution (QKD) offers an unparalleled level of encryption, ensuring secure communication channels that are resistant to eavesdropping and hacking. As security threats continue to evolve, QKD systems represent a fundamental shift, aiming to provide robust, future-ready security solutions for high-stakes applications. In this work, we present modelling and simulation framework for QKD system through free space optics (FSO) link under diverse weather conditions. The performance of the system has been investigated in terms of secure key rate and quantum bit error rate (QBER) as a function of channel loss and transmission range considering Bennett-Brassard 1984 (BB84), Coherent one-way (COW) and Pirandola, Laurenza, Ottaviani, and Banchi (PLOB) bound, used as a theoretical benchmark. QBER and received power has also been examined as a function of link distance under the effect of fog and rain considering BB84 protocol.

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来源期刊

Optik 物理-光学

CiteScore

6.90

自引率

12.90%

发文量

1471

审稿时长

46 days

期刊介绍： Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields: Optics: -Optics design, geometrical and beam optics, wave optics- Optical and micro-optical components, diffractive optics, devices and systems- Photoelectric and optoelectronic devices- Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials- Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis- Optical testing and measuring techniques- Optical communication and computing- Physiological optics- As well as other related topics.