Formation and Controlling of Optical Hopfions in High Harmonic Generation

被引:3
|
作者
Lyu, Zijian [1 ,2 ]
Fang, Yiqi [3 ]
Liu, Yunquan [1 ,2 ,4 ,5 ]
机构
[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[2] Peking Univ, Frontiers Sci Ctr Nanooptoelectron, Sch Phys, Beijing 100871, Peoples R China
[3] Univ Konstanz, Dept Phys, D-78464 Constance, Germany
[4] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
[5] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
ANGULAR-MOMENTUM;
D O I
10.1103/PhysRevLett.133.133801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Toroidal vortex is a kind of novel and exotic structured light with potential applications in photonic topology and quantum information. Here, we present the study on high harmonic generation from the interaction of the intense toroidal vortices with atoms. We show that the spatial distribution of harmonic spectra reveal unique structures, which are kinds of high-order topological toroidal vortex because of the rotating of the driving fields with transverse orbital angular momentum. Then we show that, by synthesizing the toroidal vortices and optical vortices with longitudinal orbital angular momentum, it is able to generate the optical hopfions in the extreme ultraviolet range, which exhibit a completely different topological property compared with both the driving fields. Harnessing the spin angular momentum selection rules, we further show that one can control the topological texture and channel each harmonic into a single mode of controllable Hopf invariant.
引用
收藏
页数:6
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