journal article·2022

High-directionality spin-selective routing of photons in plasmonic nanocircuits

Youqiao Ma, Bo Liu, Zhiqin Huang, Jinhua Li, Zhanghua Han, Di Wu, Jun Zhou, Yuan Ma, Qiang Wu, Hiroshi Maeda

Nanoscale· Volume 14· Issue 2
Publisher page

Abstract

Efficient on-chip manipulation of photon spin is of crucial importance in developing future integrated nanophotonics as is electron spin in spintronics. The unidirectionality induced by the interaction between spin and orbital angular momenta suffers low efficiency in classical macroscopic optics, while it can be highly enhanced on subwavelength scales with suitable architectures. Here we propose and demonstrate a spin-sorting achiral split-ring coupler to unidirectionally excite dielectric-loaded plasmonic modes in two independent waveguides. We found experimentally that the impinging light with different spin can be selectively directed into one of two branching plasmonic waveguides with a directionality contrast up to 15.1 dB. A circular-helicity-independent compact beam splitter is also realized demonstrating great potential in designing complex interconnect nanocircuits. The illustrated approach is believed to open new avenues for developing advanced optical functionalities with a flexible degree of freedom in manipulation of on-chip chirality within chiral optics.
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Research context

OpenAlex topics: Plasmonic and Surface Plasmon Research · Gold and Silver Nanoparticles Synthesis and Applications · Orbital Angular Momentum in Optics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China

Shandong Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China

School of Physics and Microelectronics, Key Laboratory of Materials Physics, Ministry of Education, Zhengzhou University, Zhengzhou, Henan 450052, China

Institute of Photonics, Faculty of Science, Ningbo University, Ningbo 315211, China

Department of Electrical and Computer Engineering, Dalhousie University, Halifax, NS B3J 2X4, Canada

Department of physics and electrical engineering, Northumbria University, Newcastle, NE18ST UK

Department of Information and Communication Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan

Funding

National Natural Science Foundation of China · National Key Research and Development Program of China · Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology

References (26)

Show source-provided references
1. Allen · Phys. Rev. A · 1992 · 45 · 818510.1103/PhysRevA.45.8185 ↗
2. Lodah · Nature · 2017 · 541 · 47310.1038/nature21037 ↗
3. Gao · Nat. Photonics · 2015 · 9 · 36310.1038/nphoton.2015.58 ↗
4. Smith · ACS Nano · 2018 · 12 · 1165710.1021/acsnano.8b07060 ↗
5. Yin · Nano Lett. · 2015 · 15 · 425510.1021/nl5042325 ↗
6. Guo · Phys. Rev. Lett. · 2019 · 123 · 18390310.1103/PhysRevLett.123.183903 ↗
7. Zu · Nano Lett. · 2019 · 19 · 77510.1021/acs.nanolett.8b03850 ↗
8. Chen · Adv. Optical Mater. · 2019 · 7 · 180146710.1002/adom.201801467 ↗
9. Barik · Science · 2018 · 359 · 66610.1126/science.aaq0327 ↗
10. Parappurath · Sci. Adv. · 2020 · 6 · eaaw413710.1126/sciadv.aaw4137 ↗
11. Mehrabad · Optica · 2020 · 7 · 169010.1364/OPTICA.393035 ↗
12. Bliokh · Nat. Photonics · 2015 · 9 · 79610.1038/nphoton.2015.201 ↗
13. Barnes · Nature · 2003 · 424 · 82410.1038/nature01937 ↗
14. Zhang · Opt. Express · 2021 · 29 · 628210.1364/OE.418900 ↗
15. Lefier · Nano Lett. · 2018 · 18 · 3810.1021/acs.nanolett.7b02828 ↗
16. Kan · Adv. Optical Mater. · 2020 · 8 · 200085410.1002/adom.202000854 ↗
17. Pan · Phys. Rev. Lett. · 2016 · 117 · 16680310.1103/PhysRevLett.117.166803 ↗
18. Thomaschewski · Nano Lett. · 2019 · 19 · 116610.1021/acs.nanolett.8b04611 ↗
19. Zhang · Adv. Funct. Mater. · 2017 · 27 · 170429510.1002/adfm.201704295 ↗
20. Chen · Nano Lett. · 2020 · 20 · 854910.1021/acs.nanolett.0c03100 ↗
21. Dorrah · Nat. Photonics · 2021 · 15 · 28710.1038/s41566-020-00750-2 ↗
22. Feng · Light Sci. Appl. · 2020 · 9 · 9510.1038/s41377-020-0330-z ↗
23. Kumar · Laser Photonics Rev. · 2013 · 7 · 166210.1002/lpor.201200113 ↗
24. Siampour · Light Sci. Appl. · 2018 · 7 · 6110.1038/s41377-018-0062-5 ↗
25. D.Marcuse , Light Transmission Optics , Van Nostrand Reinhold , New York , 1972
26. Johnson · Phys. Rev. B · 1972 · 6 · 437010.1103/PhysRevB.6.4370 ↗