Perfectly absorbed and emitted currents by complex potentials in nonlinear media
Perfectly absorbed and emitted currents by complex potentials in nonlinear media
Recently it was demonstrated that the concept of a spectral singularity (SS) can be generalized to waves propagating in nonlinear media, like matter waves or electromagnetic waves in Kerr media. The corresponding solutions represent nonlinear currents sustained by a localized linear complex potential in a nonlinear Schr\"odinger equation. A key …