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Non-Hermitian trimers: PT-symmetry versus pseudo-Hermiticity

We study a structure composed of three coupled waveguides with gain and loss, a non-Hermitian trimer. We demonstrate that the mode spectrum can be entirely real if the waveguides are placed in a special order and at certain distances between each other. Such structures generally lack a spatial symme...

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Hoofdauteurs: Sergey V Suchkov, Fernande Fotsa-Ngaffo, Aurelien Kenfack-Jiotsa, Arnaud D Tikeng, Timoleon C Kofane, Yuri S Kivshar, Andrey A Sukhorukov
Formaat: Artigo
Taal:Inglês
Gepubliceerd in: IOP Publishing 2016-01-01
Reeks:New Journal of Physics
Onderwerpen:
pseudo-Hermiticity
PT-symmetry
scattering
gain and loss
Online toegang:https://doi.org/10.1088/1367-2630/18/6/065005
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