Статья

Spin–Orbit-Engineered Selective Transport of Photons in Plasmonic Nanocircuits with Panda-Patterned Transporters

Chengkai JiangSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaZhe DengSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaBo LiuSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaJinhua LiSchool of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaZhanghua HanShandong Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250358, ChinaYuan MaDepartment of Electrical and Computer Engineering, Dalhousie University, Halifax, NS B3J 2X4, CanadaDi WuSchool of Physics and Microelectronics, Key Laboratory of Materials Physics, Ministry of Education, Zhengzhou University, Zhengzhou, Henan 450052, ChinaHiroshi MaedaDepartment of Information and Communication Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, JapanYouqiao MaDepartment of Electrical and Computer Engineering, Dalhousie University, Halifax, NS B3J 2X4, Canada

2022en

ABI

Аннотация

The spin–orbit coupling of light, which can be utilized to manipulate the polarization and spatial degrees of freedom of photons, has shown unprecedented potential in realizing on-chip integrated nanocircuits and quantum information processing. Particularly, this chiral coupling mechanism can result in unidirectional transport of spin-dependent light at a subwavelength scale by designing specific nanostructures. Here we propose and demonstrate a dielectric-loaded plasmonic nanocircuit with a panda-patterned transporter to directionally couple and guide plasmonic waves through two-branched waveguides. Both simulation and experimental results reveal that the waveguide modes excited by circularly polarized light with different spin states can be selectively coupled to one of two branching waveguides, with a measured unidirectionality efficiency up to 0.95. The proposed configuration may open up more possibilities in developing multifunctional nanocircuits that could be utilized for exploiting chiral manipulation with flexible degrees of freedom.

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Идентификаторы

DOI: 10.1021/acsphotonics.2c00841

Цитирования и источники

Цитирований: 2Использованных источников: 0

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