Quantum information and quantum foundations are becoming popular topics for advanced undergraduate courses. Many of the fundamental concepts and applications in these two fields, such as delayed choice experiments and quantum encryption, are comprehensible to undergraduates with basic knowledge of quantum mechanics. In this paper, we show that the quantum eraser, usually used to study the duality between wave and particle properties, can also serve as a generic platform for quantum key distribution. We present a pedagogical example of an algorithm to securely share random keys using the quantum eraser platform and propose its implementation with quantum circuits.

量子信息和量子基础正在成为高级本科课程的热门话题。这两个领域的许多基本概念和应用，例如延迟选择实验和量子加密，对于具有量子力学基础知识的本科生来说是可以理解的。在本文中，我们表明，通常用于研究波和粒子性质之间的二元性的量子擦除器也可以作为量子密钥分配的通用平台。我们提出了一个使用量子擦除器平台安全共享随机密钥的算法的教学示例，并提出了使用量子电路来实现它。