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physics.optics2026
Temporal Localisation of Waves from Imaginary Line-Gap Topology
Carlos Camacho, Tom Sheppard, Joshua Feis +4
For non-Hermitian Hamiltonians, gain, loss, and non-reciprocity produce complex eigenvalues which, in turn, facilitate different kinds of topological phases. One example is the ima…
physics.optics2025
Topological Localisation in Time from PT Symmetry
Tom Sheppard, C. B. B. Camacho, Sebastian Weidemann +4
Time has entered the domain of topological phases in the field of non-Hermitian physics. Previous studies have relied on periodic modulation in time to make an intuitive connection…