Abstract
We investigate the effect of parity-time ()-symmetric complex potentials on the transmission in a non-Hermitian system, which consists of an infinite dimerized chain and two side-coupled defects with -symmetric complex on-site potentials. It is found that the -symmetric imaginary potentials have pronounced effects on the transmission behavior of such a system, including the shift of the normal antiresonance and the occurrence or disappearance of the Fano resonance. These phenomena depend significantly on the coupling manners and strengths between the defects and the dimerized chain. Our study can be helpful in understanding the influences of the symmetry of the dimerized systems on transmission properties.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
