Tunable magnetless optical isolation with twisted Weyl semimetals
Weyl semimetals hold great promise in revolutionizing nonreciprocal optical components due to their unique topological properties. By exhibiting nonreciprocal magneto-optical effects without necessitating an external magnetic field, these materials offer remarkable miniaturization opportunities and...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-07-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2023-0241 |
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| author | Chistyakov Vladislav A. Asadchy Viktar S. Fan Shanhui Alù Andrea Krasnok Alex |
| author_facet | Chistyakov Vladislav A. Asadchy Viktar S. Fan Shanhui Alù Andrea Krasnok Alex |
| author_sort | Chistyakov Vladislav A. |
| collection | DOAJ |
| description | Weyl semimetals hold great promise in revolutionizing nonreciprocal optical components due to their unique topological properties. By exhibiting nonreciprocal magneto-optical effects without necessitating an external magnetic field, these materials offer remarkable miniaturization opportunities and reduced energy consumption. However, their intrinsic topological robustness poses a challenge for applications demanding tunability. In this work, we introduce an innovative approach to enhance the tunability of their response, utilizing multilayered configurations of twisted anisotropic Weyl semimetals. Our design enables controlled and reversible isolation by adjusting the twist angle between the anisotropic layers. When implemented in the Faraday geometry within the mid-IR frequency range, our design delivers impressive isolation, exceeding 50 dB, while maintaining a minimal insertion loss of just 0.33 dB. Moreover, the in-plane anisotropy of Weyl semimetals eliminates one or both polarizers of conventional isolator geometry, significantly reducing the overall dimensions. These results set the stage for creating highly adaptable, ultra-compact optical isolators that can propel the fields of integrated photonics and quantum technology applications to new heights. |
| format | Article |
| id | doaj-art-ff168940a0774891bf9255236a4a5c68 |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2023-07-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-ff168940a0774891bf9255236a4a5c682024-11-25T11:19:10ZengDe GruyterNanophotonics2192-86142023-07-0112163333334010.1515/nanoph-2023-0241Tunable magnetless optical isolation with twisted Weyl semimetalsChistyakov Vladislav A.0Asadchy Viktar S.1Fan Shanhui2Alù Andrea3Krasnok Alex4Saint-Petersburg, 191002, RussiaDepartment of Electronics and Nanoengineering, Aalto University, 02150, Espoo, FinlandGinzton Laboratory and Department of Electrical Engineering, Stanford University, Stanford, CA, 94305, USAPhotonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, USADepartment of Electrical and Computer Engineering, Florida International University, Miami, FL33174, USAWeyl semimetals hold great promise in revolutionizing nonreciprocal optical components due to their unique topological properties. By exhibiting nonreciprocal magneto-optical effects without necessitating an external magnetic field, these materials offer remarkable miniaturization opportunities and reduced energy consumption. However, their intrinsic topological robustness poses a challenge for applications demanding tunability. In this work, we introduce an innovative approach to enhance the tunability of their response, utilizing multilayered configurations of twisted anisotropic Weyl semimetals. Our design enables controlled and reversible isolation by adjusting the twist angle between the anisotropic layers. When implemented in the Faraday geometry within the mid-IR frequency range, our design delivers impressive isolation, exceeding 50 dB, while maintaining a minimal insertion loss of just 0.33 dB. Moreover, the in-plane anisotropy of Weyl semimetals eliminates one or both polarizers of conventional isolator geometry, significantly reducing the overall dimensions. These results set the stage for creating highly adaptable, ultra-compact optical isolators that can propel the fields of integrated photonics and quantum technology applications to new heights.https://doi.org/10.1515/nanoph-2023-0241optical isolationtunabletwisted anisotropic weyl semimetalweyl semimetals |
| spellingShingle | Chistyakov Vladislav A. Asadchy Viktar S. Fan Shanhui Alù Andrea Krasnok Alex Tunable magnetless optical isolation with twisted Weyl semimetals Nanophotonics optical isolation tunable twisted anisotropic weyl semimetal weyl semimetals |
| title | Tunable magnetless optical isolation with twisted Weyl semimetals |
| title_full | Tunable magnetless optical isolation with twisted Weyl semimetals |
| title_fullStr | Tunable magnetless optical isolation with twisted Weyl semimetals |
| title_full_unstemmed | Tunable magnetless optical isolation with twisted Weyl semimetals |
| title_short | Tunable magnetless optical isolation with twisted Weyl semimetals |
| title_sort | tunable magnetless optical isolation with twisted weyl semimetals |
| topic | optical isolation tunable twisted anisotropic weyl semimetal weyl semimetals |
| url | https://doi.org/10.1515/nanoph-2023-0241 |
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