$\mathcal{PT}$-symmetric wave guide system with evidence of a third-order exceptional point
| Title: | $\mathcal{PT}$-symmetric wave guide system with evidence of a third-order exceptional point |
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| Authors: | Schnabel, Jan, Cartarius, Holger, Main, Jörg, Wunner, Günter, Heiss, Walter Dieter |
| Source: | Phys. Rev. A 95, 053868 (2017) |
| Publication Year: | 2017 |
| Collection: | Physics (Other) Quantum Physics |
| Subject Terms: | Physics - Optics, Quantum Physics |
| More Details: | An experimental setup of three coupled $\mathcal{PT}$-symmetric wave guides showing the characteristics of a third-order exceptional point (EP3) has been investigated in an idealized model of three delta-functions wave guides in W.~D. Heiss and G.~Wunner, J. Phys. A 49, 495303 (2016). Here we extend these investigations to realistic, extended wave guide systems. We place major focus on the strong parameter sensitivity rendering the discovery of an EP3 a challenging task. We also investigate the vicinity of the EP3 for further branch points of either cubic or square root type behavior. Comment: 8 pages, 8 figures, minor changes in the text, additional references |
| Document Type: | Working Paper |
| DOI: | 10.1103/PhysRevA.95.053868 |
| Access URL: | http://arxiv.org/abs/1703.05091 |
| Accession Number: | edsarx.1703.05091 |
| Database: | arXiv |
| DOI: | 10.1103/PhysRevA.95.053868 |
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