Exceptional mode topological surface laser
| Title: | Exceptional mode topological surface laser |
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| Authors: | Sone, Kazuki, Ashida, Yuto, Sagawa, Takahiro |
| Source: | Phys. Rev. B 105, 235426 (2022) |
| Publication Year: | 2021 |
| Collection: | Condensed Matter Physics (Other) |
| Subject Terms: | Condensed Matter - Mesoscale and Nanoscale Physics, Physics - Optics |
| More Details: | Band topology has been studied as a design principle of realizing robust boundary modes. Here, by exploring non-Hermitian topology, we propose a three-dimensional topological laser that amplifies surface modes. The topological surface laser is protected by nontrivial topology around branchpoint singularities known as exceptional points. In contrast to two-dimensional topological lasers, the proposed three-dimensional setup can realize topological boundary modes without judicious gain at the edge or symmetry protection, which are thus robust against a broad range of disorders. We also propose a possible optical setup to experimentally realize the topological surface laser. Our results provide a general guiding principle to construct non-Hermitian topological devices in three-dimensional systems. Comment: 12 pages, 12 figures |
| Document Type: | Working Paper |
| DOI: | 10.1103/PhysRevB.105.235426 |
| Access URL: | http://arxiv.org/abs/2112.11017 |
| Accession Number: | edsarx.2112.11017 |
| Database: | arXiv |
| DOI: | 10.1103/PhysRevB.105.235426 |
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