Optical logic gate and isolator are the key components for the optical packet switching, optical address recognition, optical computing, which will play an important role in the future high-speed and large-capacity all-optical signal-processing technologies. In the investigation of materials science, we found that low-dimensional materials have feasibility and reliability in the development of optical logic gates and isolators in all-optical signal processing technology. We demonstrate that zero-dimensional bismuthene quantum dots (0D Bi QDs) can be developed as sensitizers to enhance the nonlinear optical response of one-dimensional tellurium nanotubes (1D Te NTs), and the 1D@0D Te@Bi QD NTs hybrid dimensional heterojunction is found to possess high stability and a strong Kerr effect. Taking advantage of the strong light-matter interaction, a hybrid dimensional heterojunction-based logical gate is designed to realize the OR function with optical method. Moreover, another nonlinear isolator, which utilizes the Te@Bi QD NTs/SnS₂ hybrid structure, is designed to achieve a unidirectional nonlinear optical response based on the strong Kerr nonlinearity. This investigation has enriched the application of SSPM method that can be considered an important step for new materials in all-optical signal processing technologies.

光逻辑门和隔离器是光分组交换，光地址识别，光计算的关键组成部分，它们将在未来的高速，大容量全光信号处理技术中发挥重要作用。在材料科学研究中，我们发现低维材料在全光信号处理技术中发展光学逻辑门和隔离器具有可行性和可靠性。我们证明了零维铋量子点（0D Bi QDs）可以作为增敏剂开发，以增强一维碲纳米管（1D Te NTs）和1D @ 0D Te @ Bi QD NTs混合维异质结的非线性光学响应被发现具有高稳定性和强克尔效应。利用光与物质之间的强相互作用，设计了一种基于混合维异质结的逻辑门，以光学方式实现“或”功能。此外，另一个非线性隔离器利用了Te @ Bi QD NTs / SnS₂混合结构设计用于在强Kerr非线性的基础上实现单向非线性光学响应。这项研究丰富了SSPM方法的应用，可以将其视为全光信号处理技术中新材料的重要步骤。