Reflection-free one-way edge modes in a gyromagnetic photonic crystal
We point out that electromagnetic one-way edge modes analogous to quantum Hall edge states, originally predicted by Raghu and Haldane in 2D photonic crystals possessing Dirac point-derived band gaps, can appear in more general settings. We show that the TM modes in a gyromagnetic photonic crystal ca...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/101168 http://hdl.handle.net/10220/18345 |
| _version_ | 1826110302477877248 |
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| author | Wang, Zheng Chong, Yidong Joannopoulos, John D. Soljačić, Marin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wang, Zheng Chong, Yidong Joannopoulos, John D. Soljačić, Marin |
| author_sort | Wang, Zheng |
| collection | NTU |
| description | We point out that electromagnetic one-way edge modes analogous to quantum Hall edge states, originally predicted by Raghu and Haldane in 2D photonic crystals possessing Dirac point-derived band gaps, can appear in more general settings. We show that the TM modes in a gyromagnetic photonic crystal can be formally mapped to electronic wave functions in a periodic electromagnetic field, so that the only requirement for the existence of one-way edge modes is that the Chern number for all bands below a gap is nonzero. In a square-lattice yttrium-iron-garnet crystal operating at microwave frequencies, which lacks Dirac points, time-reversal breaking is strong enough that the effect should be easily observable. For realistic material parameters, the edge modes occupy a 10% band gap. Numerical simulations of a one-way waveguide incorporating this crystal show 100% transmission across strong defects. |
| first_indexed | 2024-10-01T02:32:11Z |
| format | Journal Article |
| id | ntu-10356/101168 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:32:11Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1011682023-02-28T19:30:38Z Reflection-free one-way edge modes in a gyromagnetic photonic crystal Wang, Zheng Chong, Yidong Joannopoulos, John D. Soljačić, Marin School of Physical and Mathematical Sciences DRNTU::Science::Physics We point out that electromagnetic one-way edge modes analogous to quantum Hall edge states, originally predicted by Raghu and Haldane in 2D photonic crystals possessing Dirac point-derived band gaps, can appear in more general settings. We show that the TM modes in a gyromagnetic photonic crystal can be formally mapped to electronic wave functions in a periodic electromagnetic field, so that the only requirement for the existence of one-way edge modes is that the Chern number for all bands below a gap is nonzero. In a square-lattice yttrium-iron-garnet crystal operating at microwave frequencies, which lacks Dirac points, time-reversal breaking is strong enough that the effect should be easily observable. For realistic material parameters, the edge modes occupy a 10% band gap. Numerical simulations of a one-way waveguide incorporating this crystal show 100% transmission across strong defects. Published version 2013-12-20T01:46:43Z 2019-12-06T20:34:32Z 2013-12-20T01:46:43Z 2019-12-06T20:34:32Z 2008 2008 Journal Article Wang, Z., Chong, Y., Joannopoulos, J. D., & Soljačić, M. (2008). Reflection-free one-way edge modes in a gyromagnetic photonic crystal. Physical review letters, 100(1), 013905. https://hdl.handle.net/10356/101168 http://hdl.handle.net/10220/18345 10.1103/PhysRevLett.100.013905 en Physical review letters © 2008 The American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of The American Physical Society. The paper can be found at the following official DOI: http://dx.doi.org/10.1103/PhysRevLett.100.013905. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 4 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics Wang, Zheng Chong, Yidong Joannopoulos, John D. Soljačić, Marin Reflection-free one-way edge modes in a gyromagnetic photonic crystal |
| title | Reflection-free one-way edge modes in a gyromagnetic photonic crystal |
| title_full | Reflection-free one-way edge modes in a gyromagnetic photonic crystal |
| title_fullStr | Reflection-free one-way edge modes in a gyromagnetic photonic crystal |
| title_full_unstemmed | Reflection-free one-way edge modes in a gyromagnetic photonic crystal |
| title_short | Reflection-free one-way edge modes in a gyromagnetic photonic crystal |
| title_sort | reflection free one way edge modes in a gyromagnetic photonic crystal |
| topic | DRNTU::Science::Physics |
| url | https://hdl.handle.net/10356/101168 http://hdl.handle.net/10220/18345 |
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