Peng Jingyang, Xiu Yuanqi, Wang Aizhu
School of Artificial Intelligence Science and Technology, University of Shanghai for Science and Technology, Shanghai, 200093, China.
Institute of Photonic Chips, University of Shanghai for Science and Technology, Shanghai, 200093, China.
Phys Chem Chem Phys. 2025 Jul 10;27(27):14172-14188. doi: 10.1039/d5cp00529a.
Topological materials, characterized by unique quantum states and nontrivial band topologies, have become a central focus in physics due to their remarkable quantum and geometric properties. Over recent decades, extensive research has uncovered a diverse range of phenomena in these materials, from robust surface states and unconventional transport behaviours to extraordinary optical signatures. In this review, we first provide an overview of recent studies on topological materials and their associated quantum properties. We then examine the distinctive optical signatures that emerge from the quantum geometry of Bloch bands, manifesting as enhanced photocurrents and nonlinear optical effects. By linking these photocurrent characteristics to the intrinsic properties of topological materials, we aim to deepen the understanding of how band topology influences optical responses. Finally, we discuss the emerging opportunities enabled by topological quantum effects for next-generation optoelectronic and photonics devices and outline key challenges that must be addressed to fully leverage these effects in practical applications.
拓扑材料以其独特的量子态和非平凡的能带拓扑结构为特征，由于其卓越的量子和几何性质，已成为物理学的核心研究焦点。在最近几十年里，广泛的研究揭示了这些材料中的各种现象，从稳健的表面态、非常规的输运行为到非凡的光学特征。在这篇综述中，我们首先概述了关于拓扑材料及其相关量子性质的近期研究。然后，我们研究了从布洛赫能带的量子几何中出现的独特光学特征，表现为增强的光电流和非线性光学效应。通过将这些光电流特性与拓扑材料的固有性质联系起来，我们旨在加深对能带拓扑如何影响光学响应的理解。最后，我们讨论了拓扑量子效应为下一代光电器件和光子器件带来的新机遇，并概述了在实际应用中充分利用这些效应必须解决的关键挑战。
