Unidirectional reflectionless phenomena in a non-Hermitian quantum system of quantum dots coupled to a plasmonic waveguide | Zendy

Nan Wu | Zendy; Cong Zhang | Zendy; Xing Ri Jin | Zendy; Ying Qiao Zhang | Zendy; YoungPak Lee | Zendy

Open Access

Unidirectional reflectionless phenomena in a non-Hermitian quantum system of quantum dots coupled to a plasmonic waveguide

Author(s) -

Nan Wu,

Cong Zhang,

Xing Ri Jin,

Ying Qiao Zhang,

YoungPak Lee

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.003839

Subject(s) - quantum dot , plasmon , physics , waveguide , quantum , quantum optics , hermitian matrix , optics , quantum wire , quantum point contact , optoelectronics , quantum mechanics , condensed matter physics , quantum well , laser

Unidirectional reflectionless phenomena are investigated theoretically in a non-Hermitian quantum system composed of several quantum dots and a plasmonic waveguide. By adjusting the phase shifts between quantum dots, single- and dual-band unidirectional reflectionlessnesses are realized at exceptional points based on two and three quantum dots coupled to a plasmonic waveguide, respectively. In addition, single- and dual-band unidirectional perfect absorptions with high quality factors are obtained at the vicinity of exceptional points.

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