“…In the same time, the OB in the semiconductor quantum wells and dots also is followed with interest for many advantages therein such as strong non-linear, large and revisable electric dipole moments, the great flexibilities and selectivity in devices. For instance, Jamshidnejad et al [17] proposed a defect slab with a negative refractive quantum dot nanostructure to obtain the OB. It can be controlled by the amplitude of the driving fields and thickness of the slab medium in the negative refraction band.…”