Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation
Exceptional points (EPs) can achieve intriguing asymmetric control in non-Hermitian systems due to the degeneracy of eigenstates. Here, we present a general method that extends this specific asymmetric response of EP photonic systems to address any arbitrary fully-polarized light. By rotating the me...
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Physics Magnetron sputtering Quantum mechanics |
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Physics Magnetron sputtering Quantum mechanics Yang, Zijin Huang, Po-Sheng Lin, Yu-Tsung Qin, Haoye Zúñiga-Pérez, Jesús Shi, Yuzhi Wang, Zhanshan Cheng, Xinbin Tang, Man-Chung Han, Sanyang Kanté, Boubacar Li, Bo Wu, Pin Chieh Genevet, Patrice Song, Qinghua Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
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Exceptional points (EPs) can achieve intriguing asymmetric control in non-Hermitian systems due to the degeneracy of eigenstates. Here, we present a general method that extends this specific asymmetric response of EP photonic systems to address any arbitrary fully-polarized light. By rotating the meta-structures at EP, Pancharatnam-Berry (PB) phase can be exclusively encoded on one of the circular polarization-conversion channels. To address any arbitrary wavefront, we superpose the optical signals originating from two orthogonally polarized -yet degenerate- EP eigenmodes. The construction of such orthogonal EP eigenstates pairs is achieved by applying mirror-symmetry to the nanostructure geometry flipping thereby the EP eigenmode handedness from left to right circular polarization. Non-Hermitian reflective PB metasurfaces designed using such EP superposition enable arbitrary, yet unidirectional, vectorial wavefront shaping devices. Our results open new avenues for topological wave control and illustrate the capabilities of topological photonics to distinctively operate on arbitrary polarization-state with enhanced performances. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Yang, Zijin Huang, Po-Sheng Lin, Yu-Tsung Qin, Haoye Zúñiga-Pérez, Jesús Shi, Yuzhi Wang, Zhanshan Cheng, Xinbin Tang, Man-Chung Han, Sanyang Kanté, Boubacar Li, Bo Wu, Pin Chieh Genevet, Patrice Song, Qinghua |
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Article |
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Yang, Zijin Huang, Po-Sheng Lin, Yu-Tsung Qin, Haoye Zúñiga-Pérez, Jesús Shi, Yuzhi Wang, Zhanshan Cheng, Xinbin Tang, Man-Chung Han, Sanyang Kanté, Boubacar Li, Bo Wu, Pin Chieh Genevet, Patrice Song, Qinghua |
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Yang, Zijin |
| title |
Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
| title_short |
Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
| title_full |
Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
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Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
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Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
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creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation |
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2024 |
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https://hdl.handle.net/10356/174913 |
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1800916241507942400 |
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sg-ntu-dr.10356-1749132024-04-22T15:36:47Z Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation Yang, Zijin Huang, Po-Sheng Lin, Yu-Tsung Qin, Haoye Zúñiga-Pérez, Jesús Shi, Yuzhi Wang, Zhanshan Cheng, Xinbin Tang, Man-Chung Han, Sanyang Kanté, Boubacar Li, Bo Wu, Pin Chieh Genevet, Patrice Song, Qinghua School of Physical and Mathematical Sciences Majulab, International Research Laboratory IRL 3654, CNRS, Université Côte d’Azur, Sorbonne Université, National University of Singapore, Nanyang Technological University, Singapore Physics Magnetron sputtering Quantum mechanics Exceptional points (EPs) can achieve intriguing asymmetric control in non-Hermitian systems due to the degeneracy of eigenstates. Here, we present a general method that extends this specific asymmetric response of EP photonic systems to address any arbitrary fully-polarized light. By rotating the meta-structures at EP, Pancharatnam-Berry (PB) phase can be exclusively encoded on one of the circular polarization-conversion channels. To address any arbitrary wavefront, we superpose the optical signals originating from two orthogonally polarized -yet degenerate- EP eigenmodes. The construction of such orthogonal EP eigenstates pairs is achieved by applying mirror-symmetry to the nanostructure geometry flipping thereby the EP eigenmode handedness from left to right circular polarization. Non-Hermitian reflective PB metasurfaces designed using such EP superposition enable arbitrary, yet unidirectional, vectorial wavefront shaping devices. Our results open new avenues for topological wave control and illustrate the capabilities of topological photonics to distinctively operate on arbitrary polarization-state with enhanced performances. Published version Q.S. acknowledges the funding support from the National Key R&D Program of China (No. 2023YFB3811400), the National Natural Science Foundation of China (No. 12204264), and the Shenzhen Science and Technology Innovation Commission (No. WDZC20220810152404001; JCYJ20230807111706014). Q.S. and S.H. acknowledges the funding from the Cross-disciplinary Research and Innovation Fund of Tsinghua Shenzhen International Graduate School (No. JC2022001). Y.S. acknowledges the funding support from the National Natural Science Foundation of China (No. 62205246), Shanghai Pilot Program for Basic Research, Science and Technology Commission of Shanghai Municipality (22ZR1432400), and the Fundamental Research Funds for the Central Universities. B.K. acknowledges support for the U.S. Army Research Office (ARO) grant W911NF2310027. P.C.W. gratefully acknowledges the use of advanced focused ion beam system (EM025200) of National Science and Technology Council (NSTC) 112- 2731-M-006-001 and electron beam lithography system belonging to the Core Facility Center of National Cheng Kung University (NCKU). P.C.W. acknowledges the support from the NSTC, Taiwan (Grant number: 111-2112-M-006-022-MY3; 111-2124-M-006-003; 112-2124-M-006- 001), and in part from the Higher Education Sprout Project of the Ministry of Education (MOE) to the Headquarters of University Advancement at NCKU. P.C.W. also acknowledges the support from the MOE (Yushan Young Scholar Program), Taiwan and supported in part by Higher Education Sprout Project, Center for Quantum Frontiers of Research & Technology (QFort) at NCKU. 2024-04-16T02:38:43Z 2024-04-16T02:38:43Z 2024 Journal Article Yang, Z., Huang, P., Lin, Y., Qin, H., Zúñiga-Pérez, J., Shi, Y., Wang, Z., Cheng, X., Tang, M., Han, S., Kanté, B., Li, B., Wu, P. C., Genevet, P. & Song, Q. (2024). Creating pairs of exceptional points for arbitrary polarization control: asymmetric vectorial wavefront modulation. Nature Communications, 15(1), 232-. https://dx.doi.org/10.1038/s41467-023-44428-z 2041-1723 https://hdl.handle.net/10356/174913 10.1038/s41467-023-44428-z 38177166 2-s2.0-85181469198 1 15 232 en Nature Communications © The Author(s) 2024. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |