A perspective of twisted photonic structures
A perspective of twisted photonic structures
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DOI：
10.1063/5.0070163
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发表时间：
2021-12-13
影响因子：
4
通讯作者：
Dai, Siyuan
中科院分区：
文献类型：
--
作者：
Chen, Jialin;Lin, Xiao;Dai, Siyuan
莫尔超晶格——具有小角度的扭曲范德华（vdW）结构——由于其中揭示的重要现象（包括非常规超导性、相关绝缘态和铁磁性）而在凝聚态物理中受到越来越多的关注。莫尔超晶格通常由 vdW 材料的原子层组成，其中奇异的物理现象源自相邻原子层之间的量子电子耦合。莫尔电子学中揭示的丰富现象激发了对其光子对应物的深入研究。除了 vdW 材料之外，扭曲光子系统还可以由超材料、超表面和光子晶体组成，并由层间电磁耦合介导。扭曲结构中短程层间量子和长程电磁耦合之间的相互作用有望在纳米光学中产生丰富的现象。本研究回顾了纳米光子学扭曲结构的最新进展，以及新兴主题、机遇、基本挑战和潜在应用的前景。
Moire superlattices-twisted van der Waals (vdW) structures with small angles-are attracting increasing attention in condensed matter physics, due to important phenomena revealed therein, including unconventional superconductivity, correlated insulating states, and ferromagnetism. Moire superlattices are typically comprised of atomic layers of vdW materials where the exotic physics arises from quantum electronic coupling between adjacent atomic layers. The abundant phenomena revealed in moire electronics have motivated intensive studies on their photonic counterpart. In addition to vdW materials, twisted photonic systems can also be comprised of metamaterials, metasurfaces, and photonic crystals, mediated by interlayer electromagnetic coupling instead. The interplay between short-ranged interlayer quantum and long-ranged electromagnetic coupling in twisted structures is expected to yield rich phenomena in nano-optics. This study reviews recent progress in twisted structures for nanophotonics and outlook for emerging topics, opportunities, fundamental challenges, and potential applications.