Dual-frequency unidirectional reflectionlessness in a non-Hermitian quantum system of two different energy-level quantum dots coupled to a plasmonic waveguide

Dual-frequency unidirectional reflectionlessness is investigated in a quantum system consisting of a two-level and a V-type three-level quantum dots coupled to a plasmonic waveguide based on electromagnetically induced transparency-like effect. The results show that the dual-frequency unidirectional reflectionlessness can be obtained by appropriately adjusting the phase shift between two quantum dots, decay rates of quantum dots, and coupling...