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Liu GG, Zhang BL. Beam splitter benefits from topological antichiral edge states. Opto-Electron Adv 6, 230056 (2023). doi: 10.29026/oea.2023.230056
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Beam splitter benefits from topological antichiral edge states
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Abstract
A functional beam splitter is proposed with recently realized topological antichiral edge states, which offer multi-channel utilization, crosstalk-proof performance, and robustness against defects and obstacles. -
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References
[1] Ozawa T, Price HM, Amo A, Goldman N, Hafezi M et al. Topological photonics. Rev Mod Phys 91, 015006 (2019). doi: 10.1103/RevModPhys.91.015006 [2] Skirlo SA, Lu L, Igarashi Y, Yan QH, Joannopoulos J et al. Experimental observation of large Chern numbers in photonic crystals. Phys Rev Lett 115, 253901 (2015). doi: 10.1103/PhysRevLett.115.253901 [3] Zhang L, Yang YH, He MJ, Wang HX, Yang ZJ et al. Valley kink states and topological channel intersections in substrate-integrated photonic circuitry. Laser Photonics Rev 13, 1900159 (2019). doi: 10.1002/lpor.201900159 [4] Cheng XJ, Jouvaud C, Ni X, Mousavi SH, Genack AZ et al. Robust reconfigurable electromagnetic pathways within a photonic topological insulator. Nat Mater 15, 542–548 (2016). doi: 10.1038/nmat4573 [5] Chen JF, Li ZY. Configurable topological beam splitting via antichiral gyromagnetic photonic crystal. Opto-Electron Sci 1, 220001 (2022). doi: 10.29026/oes.2022.220001 [6] Colomés E, Franz M. Antichiral edge states in a modified Haldane nanoribbon. Phys Rev Lett 120, 086603 (2018). doi: 10.1103/PhysRevLett.120.086603 [7] Chen JF, Liang WY, Li ZY. Antichiral one-way edge states in a gyromagnetic photonic crystal. Phys Rev B 101, 214102 (2020). doi: 10.1103/PhysRevB.101.214102 [8] Zhou PH, Liu GG, Yang YH, Hu YH, Ma SL et al. Observation of photonic antichiral edge states. Phys Rev Lett 125, 263603 (2020). doi: 10.1103/PhysRevLett.125.263603 [9] Liu GG, Gao Z, Wang Q, Xi X, Hu YH et al. Topological Chern vectors in three-dimensional photonic crystals. Nature 609, 925–930 (2022). doi: 10.1038/s41586-022-05077-2 -
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Liu GG, Zhang BL. Beam splitter benefits from topological antichiral edge states. Opto-Electron Adv 6, 230056 (2023). doi: 10.29026/oea.2023.230056
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Figure 1.
Schematic illustration of the topological beam splitter based on antichiral edge states.
