Relativistic Effects and Quantum Light-Matter Interaction-induced Security Vulnerabilities in Integrated Quantum Key Distribution System using Spheroidal Quantum Dots as Single-Photon Emitters

IF 1.7 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Moses Udoisoh, Okpara Nathaniel
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引用次数: 0

Abstract

This study investigates the impact of relativistic effects and light-matter interactions on quantum key distribution (QKD) security in satellite-based quantum communication systems. We use a spheroidal quantum dot (SQD) as a single-photon emitter integrated within a photonic waveguide in a relativistic quantum communication system, where both sender and receiver are in motion at velocities approaching a significant fraction of the speed of light. Our analysis employs a fully relativistic treatment of the SQD’s electronic structure, incorporating spin–orbit coupling. We examine the quantum bit error rate (QBER) under relativistic motion and various eavesdropping attack scenarios, including intercept-resend, cloning, and measurement device compromise attacks. Our findings indicate that relativistic effects introduce errors into the QKD system, modifying the polarization states of the transmitted photons. Our analysis reveals that relativistic effects induce a 12% decrease in secure key rate (SKR) at v /c = 0.5. Adversarial attacks further exacerbate SKR vulnerability, with the intercept-resend attack reducing SKR by 75%, the cloning attack by 40%, and the man-in-the-middle (MitM) attack by 95% at v/c = 0.8. Our simulations demonstrate that relativistic corrections and advanced cryptographic techniques are essential to ensure secure key transmission in satellite-based QKD networks.

球体量子点作为单光子发射体集成量子密钥分配系统中的相对论效应和量子光物质相互作用诱导的安全漏洞
本研究探讨了基于卫星的量子通信系统中相对论效应和光物质相互作用对量子密钥分发(QKD)安全性的影响。在相对论量子通信系统中,我们使用球面量子点(SQD)作为集成在光子波导中的单光子发射器,其中发送者和接收者都以接近光速的显著部分的速度运动。我们的分析采用了一种完全相对论的方法来处理量子场的电子结构,并结合了自旋轨道耦合。我们研究了相对论运动和各种窃听攻击场景下的量子比特误码率(QBER),包括拦截-重发,克隆和测量设备妥协攻击。我们的研究结果表明,相对论效应在QKD系统中引入了误差,改变了传输光子的偏振态。我们的分析表明,当v /c = 0.5时,相对论效应导致安全密钥率(SKR)降低12%。对抗性攻击进一步加剧了SKR的脆弱性,在v/c = 0.8时,拦截重发攻击使SKR降低75%,克隆攻击使SKR降低40%,中间人攻击使SKR降低95%。我们的模拟表明,相对论校正和先进的加密技术对于确保基于卫星的QKD网络中的安全密钥传输至关重要。
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来源期刊
Brazilian Journal of Physics
Brazilian Journal of Physics 物理-物理:综合
CiteScore
2.50
自引率
6.20%
发文量
189
审稿时长
6.0 months
期刊介绍: The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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