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physics.optics2026
Boundary singular scattering enables coherent perfect absorption and lasing without resonators
Letian Yu, Xu Zheng, Cesare Soci +2
Scattering singularities are features conventionally associated with resonant scattering bodies, which correspond to the zeros and poles of a scattering matrix, and manifest as coh…
physics.optics2026
Dirac branch-cut modes with relativistic transport
Bofeng Zhu, Chengzhi Ma, Qiang Wang +6
Emergent Dirac fields, exhibiting effective relativistic physics, are most commonly associated with bulk and surface states in materials such as graphene and topological insulators…
physics.optics2026
Topological antilaser
Rui-Chang Shen, Chunquan Peng, Bingbing Wang +6
Coherent perfect absorption (CPA)-the time-reversed operation of lasing at threshold-relies on finely tuned interference and is intrinsically fragile to disorder and structural imp…