Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment
Directional near-field coupling can enable many applications, such as directional routing, on-chip information processing, and chiral quantum optics. This directional near-field coupling is generally face dependent, since the induced near-field radiation pattern is dependent on which face (e.g., the...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/178323 |
| _version_ | 1811676778369908736 |
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| author | Bian, Chenxu Zhong, Yuhan Chen, Xuhuinan Low, Tony Chen, Hongsheng Zhang, Baile Lin, Xiao |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Bian, Chenxu Zhong, Yuhan Chen, Xuhuinan Low, Tony Chen, Hongsheng Zhang, Baile Lin, Xiao |
| author_sort | Bian, Chenxu |
| collection | NTU |
| description | Directional near-field coupling can enable many applications, such as directional routing, on-chip information processing, and chiral quantum optics. This directional near-field coupling is generally face dependent, since the induced near-field radiation pattern is dependent on which face (e.g., the upper or lower face) of the dipolar source is facing toward the outcoupler. In other words, the dipolar sources in the directional near-field coupling intrinsically have two faces (e.g., Janus faces), whose corresponding near-field coupling strength and coupling directionality might be distinct. Here, we outline a general physical framework to control these Janus faces in the directional near-field coupling and find that they can have the feature of an oriented misalignment. To be specific, the upper and lower radiation patterns of excited surface waves can have the same shape but are misaligned with a twist angle. For example, the twist angle can be any acute angle if the source is composed of a Huygens dipole and an electric dipole, and it can be any obtuse angle if the source is constructed by a circular electric dipole and a magnetic dipole. |
| first_indexed | 2024-10-01T02:26:53Z |
| format | Journal Article |
| id | ntu-10356/178323 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:26:53Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1783232024-06-17T15:34:24Z Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment Bian, Chenxu Zhong, Yuhan Chen, Xuhuinan Low, Tony Chen, Hongsheng Zhang, Baile Lin, Xiao School of Physical and Mathematical Sciences Physics Coupling strengths Dipolar sources Directional near-field coupling can enable many applications, such as directional routing, on-chip information processing, and chiral quantum optics. This directional near-field coupling is generally face dependent, since the induced near-field radiation pattern is dependent on which face (e.g., the upper or lower face) of the dipolar source is facing toward the outcoupler. In other words, the dipolar sources in the directional near-field coupling intrinsically have two faces (e.g., Janus faces), whose corresponding near-field coupling strength and coupling directionality might be distinct. Here, we outline a general physical framework to control these Janus faces in the directional near-field coupling and find that they can have the feature of an oriented misalignment. To be specific, the upper and lower radiation patterns of excited surface waves can have the same shape but are misaligned with a twist angle. For example, the twist angle can be any acute angle if the source is composed of a Huygens dipole and an electric dipole, and it can be any obtuse angle if the source is constructed by a circular electric dipole and a magnetic dipole. Published version X.L. acknowledges the support partly from the National Natural Science Fund for Excellent Young Scientists Fund Program (Overseas) of China, the National Natural Science Foundation of China (NSFC) under Grant No. 62175212, Zhejiang Provincial Natural Science Fund Key Project under Grant No. Z23F050009, and the Fundamental Research Funds for the Central Universities (2021FZZX001-19). H.C. acknowledges the support partly from the Key Research and Development Program of the Ministry of Science and Technology under Grants No. 2022YFA1404704, No. 2022YFA1405200, and No. 2022YFA1404902, and the Key Research and Development Program of Zhejiang Province under Grant No. 2022C01036. 2024-06-12T00:43:59Z 2024-06-12T00:43:59Z 2024 Journal Article Bian, C., Zhong, Y., Chen, X., Low, T., Chen, H., Zhang, B. & Lin, X. (2024). Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment. Physical Review A, 109(3), 033505-. https://dx.doi.org/10.1103/PhysRevA.109.033505 2469-9926 https://hdl.handle.net/10356/178323 10.1103/PhysRevA.109.033505 2-s2.0-85186770725 3 109 033505 en Physical Review A © 2024 American Physical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1103/PhysRevA.109.033505 application/pdf |
| spellingShingle | Physics Coupling strengths Dipolar sources Bian, Chenxu Zhong, Yuhan Chen, Xuhuinan Low, Tony Chen, Hongsheng Zhang, Baile Lin, Xiao Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment |
| title | Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment |
| title_full | Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment |
| title_fullStr | Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment |
| title_full_unstemmed | Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment |
| title_short | Janus faces of dipolar sources in directional near-field coupling with an oriented misalignment |
| title_sort | janus faces of dipolar sources in directional near field coupling with an oriented misalignment |
| topic | Physics Coupling strengths Dipolar sources |
| url | https://hdl.handle.net/10356/178323 |
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