3 papers
physics.optics2019
Nonhermitian defect states from lifetime differences
Martí Bosch, Simon Malzard, Martina Hentschel +1
Nonhermitian systems provide new avenues to create topological defect states. An unresolved general question is how much the formation of these states depends on asymmetric backsca…
physics.optics2018
Nonlinear mode competition and symmetry-protected power oscillations in topological lasers
Simon Malzard, Henning Schomerus
Topological photonics started out as a pursuit to engineer systems that mimic fermionic single-particle Hamiltonians with symmetry-protected modes, whose number can only change in…
physics.optics2018
Bulk and edge-state arcs in non-hermitian coupled-resonator arrays
Simon Malzard, Henning Schomerus
We describe the formation of bulk and edge arcs in the dispersion relation of two-dimensional coupled-resonator arrays that are topologically trivial in the hermitian limit. Each r…