光子跳跃的拓扑变换和自由空间输运

IF 20.6 1区 物理与天体物理 Q1 OPTICS Advanced Photonics Pub Date : 2022-07-11 DOI:10.1117/1.ap.5.1.015001
Yijie Shen, Bing-qiang Yu, Hai-Jung Wu, Chun-Yu Li, Zhi-Han Zhu, A. Zayats
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引用次数: 11

摘要

结构化光场体现了偏振、相位和振幅的强烈空间变化。对这些领域的理解、表征和开发可以通过它们的拓扑性质来实现。三维拓扑孤子,如hopfion,是具有非平凡类粒子结构的三维局域连续场配置,表现出许多重要的拓扑保护性质。在这里,我们提出并证明了具有Hopf纤维化、Hopf指数和Hopf映射的Hopf离子的光子对应物,从实空间矢量束到表示偏振态的同位超球。我们通过实验生成了具有按需高阶Hopf指数和独立控制拓扑结构的光子hopfion,包括N’eel-、Bloch-和反skyrmionic类型。我们还证明了光子hopfion的鲁棒自由空间输运,从而展示了hopfion在发展光学拓扑信息学和通信方面的潜力。
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Topological transformation and free-space transport of photonic hopfions
Structured light fields embody strong spatial variations of polarisation, phase and amplitude. Understanding, characterization and exploitation of such fields can be achieved through their topological properties. Three-dimensional (3D) topological solitons, such as hopfions, are 3D localized continuous field configurations with nontrivial particle-like structures, that exhibit a host of important topologically protected properties. Here, we propose and demonstrate photonic counterparts of hopfions with exact characteristics of Hopf fibration, Hopf index, and Hopf mapping from real-space vector beams to homotopic hyperspheres representing polarisation states. We experimentally generate photonic hopfions with on-demand high-order Hopf indices and independently controlled topological textures, including N\'eel-, Bloch-, and anti-skyrmionic types. We also demonstrate a robust free-space transport of photonic hopfions, thus, showing potential of hopfions for developing optical topological informatics and communications.
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来源期刊
CiteScore
22.70
自引率
1.20%
发文量
49
审稿时长
18 weeks
期刊介绍: Advanced Photonics is a highly selective, open-access, international journal that publishes innovative research in all areas of optics and photonics, including fundamental and applied research. The journal publishes top-quality original papers, letters, and review articles, reflecting significant advances and breakthroughs in theoretical and experimental research and novel applications with considerable potential. The journal seeks high-quality, high-impact articles across the entire spectrum of optics, photonics, and related fields with specific emphasis on the following acceptance criteria: -New concepts in terms of fundamental research with great impact and significance -State-of-the-art technologies in terms of novel methods for important applications -Reviews of recent major advances and discoveries and state-of-the-art benchmarking. The journal also publishes news and commentaries highlighting scientific and technological discoveries, breakthroughs, and achievements in optics, photonics, and related fields.
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