We describe the development and in-class evaluation of a quantum interactive learning tutorial (QuILT) on quantum key distribution, a context which involves an exciting application of quantum mechanics. The protocol used in the QuILT described here uses single photons with nonorthogonal polarization states to generate a random shared key over a public channel for encrypting and decrypting information. The QuILT strives to help upper-level undergraduate students learn quantum mechanics using a simple two state system. It actively engages students in the learning process and helps them build links between the formalism and the conceptual aspects of quantum physics without compromising the technical content. The in-class evaluation suggests that the validated QuILT is helpful in improving students’ understanding of relevant concepts.

中文翻译：

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量子密钥分配的交互式学习教程

我们描述了有关量子密钥分配的量子交互学习教程（QuILT）的开发和课堂评估，该上下文涉及令人兴奋的量子力学应用。这里描述的QuILT中使用的协议使用具有非正交偏振态的单光子在公共通道上生成随机共享密钥，以对信息进行加密和解密。QuILT致力于使用简单的两态系统帮助高年级本科生学习量子力学。它积极地使学生参与学习过程，并帮助他们在不损害技术内容的前提下，在形式主义与量子物理学的概念方面之间建立联系。课堂评估表明，经过验证的QuILT有助于提高学生对相关概念的理解。