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quant-ph2012★ 57 cited
Self-dual Spectral Singularities and Coherent Perfect Absorbing Lasers without PT-symmetry
Ali Mostafazadeh
A PT-symmetric optically active medium that lases at the threshold gain also acts as a complete perfect absorber at the laser wavelength. This is because spectral singularities of…
quant-ph2012★ 25 cited
Perturbative Analysis of Spectral Singularities and Their Optical Realizations
Ali Mostafazadeh, Saber Rostamzadeh
We develop a perturbative method of computing spectral singularities of a Schreodinger operator defined by a general complex potential that vanishes outside a closed interval. Thes…