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 symmetry, in contrast to parity-time symmetric trimers which are known to feature a real spectrum. We also determine a threshold for wave amplification and analyse the scattering properties of...[Show more]
|Collections||ANU Research Publications|
|Source:||New Journal of Physics|
|01 Suchkov S V et al Non Hermitian trimers 2016.pdf||913.98 kB||Adobe PDF|
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