Researchers Map Hidden Edge States in Dissipative Superconductor

Algebraic decay occurs in the gapless regime and an exponential falloff is observed in the gapped phase, enabling local observables to directly diagnose the topology. The correspondence breaks down in a dissipative topological superconductor, where local observables become unable to decipher the expected topology. Shaina Gandhi of the Indian Institute of Technology Guwahati and colleagues from Bilkent University, using a bond-dissipative dimerized Kitaev chain within a third-quantized rapidity-matrix formulation, find that at zero chemical potential the Majorana rapidity matrix decomposes into two independent non-Hermitian sectors. Each sector possesses its own generalised Brillouin zone and non-Bloch winding number, thereby revealing a sector-resolved non-Bloch bulk-boundary correspondence. Non-Hermitian lattices are strongly boundary…