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首页> 外文期刊>European journal of physics: A journal of the European Physical Society >Interactive simulations for quantum key distribution
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Interactive simulations for quantum key distribution

机译：量子密钥分布的交互式模拟

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Secure communication protocols are becoming increasingly important, e.g. for internet-based communication. Quantum key distribution (QKD) allows two parties, commonly called Alice and Bob, to generate a secret sequence of 0s and 1s called a key that is only known to themselves. Classically, Alice and Bob could never be certain that their communication was not compromised by a malicious eavesdropper. Quantum mechanics however makes secure communication possible. The fundamental principle of quantum mechanics that taking a measurement perturbs the system (unless the measurement is compatible with the quantum state) also applies to an eavesdropper. Using appropriate protocols to create the key, Alice and Bob can detect the presence of an eavesdropper by errors in their measurements. As part of the QuVis Quantum Mechanics Visualisation Project, we have developed a suite of four interactive simulations that demonstrate the basic principles of three different QKD protocols. The simulations use either polarised photons or spin 1/2 particles as physical realisations. The simulations and accompanying activities are freely available for use online or download, and run on a wide range of devices including tablets and PCs. Evaluation with students over three years was used to refine the simulations and activities. Preliminary studies show that the refined simulations and activities help students learn the basic principles of QKD at both the introductory and advanced undergraduate levels.
机译：安全通信协议变得越来越重要，例如，用于基于互联网的沟通。 Quantum密钥分布（QKD）允许两方，通常称为Alice和Bob，生成0S和1S的秘密序列，称为仅为自己已知的键。经典地，爱丽丝和鲍勃永远不会确定他们的沟通没有被恶意窃听者妥协。然而，量子力学使得可以实现安全的沟通。测量渗透系统的量子力学的基本原理（除非测量与量子状态）也适用于窃听器。使用适当的协议创建密钥，Alice和Bob可以通过测量中的错误来检测窃听器的存在。作为Quvis量子力学可视化项目的一部分，我们开发了一套四种互动模拟，展示了三种不同QKD协议的基本原则。模拟使用偏振光子或旋转1/2颗粒作为物理实现。模拟和随附的活动可自由使用在线或下载，并在各种设备上运行，包括平板电脑和PC。与三年超过三年的学生的评估用于改进模拟和活动。初步研究表明，精致的模拟和活动有助于学生在介绍性和高级本科水平上学习QKD的基本原则。

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