论文标题
空间模式中的高维两光子干扰效应
High-dimensional two-photon interference effects in spatial modes
论文作者
论文摘要
两光子干扰是量子信息科学中许多应用的基本量子光学效应。在这里，我们研究了沿单个梁路径的多个横向空间模式中的两光子干扰。除了使用二维空间模式分离器实施Hong-Ou-Mandel干扰的模拟外，我们还扩展了该方案，以观察不同的三维和四维空间模式的聚结和抗凝聚。沿单个梁路径的空间模式内的操作提高了对干涉稳定性的需求，并开辟了实现线性光网络的新途径，以实现用于复杂的量子信息任务。
Two-photon interference is a fundamental quantum optics effect with numerous applications in quantum information science. Here, we study two-photon interference in multiple transverse-spatial modes along a single beam-path. Besides implementing the analogue of the Hong-Ou-Mandel interference using a two-dimensional spatial-mode splitter, we extend the scheme to observe coalescence and anti-coalescence in different three and four-dimensional spatial-mode multiports. The operation within spatial modes, along a single beam-path, lifts the requirement for interferometric stability and opens up new pathways of implementing linear optical networks for complex quantum information tasks.
