Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling

Wang, Qiao; Kuang, Kaili; Gao, Huixuan; Chu, Shuwen; Yu, Li; Peng, Wei

doi:10.3390/nano11051350

Open AccessArticle

Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling

by

Qiao Wang

,

Kaili Kuang

,

Huixuan Gao

,

Shuwen Chu

,

Li Yu

and

Wei Peng

^*

Department of Physics, Dalian University of Technology, Ganjingzi District, Dalian 116024, China

^*

Author to whom correspondence should be addressed.

Nanomaterials 2021, 11(5), 1350; https://doi.org/10.3390/nano11051350

Submission received: 20 April 2021 / Revised: 14 May 2021 / Accepted: 17 May 2021 / Published: 20 May 2021

(This article belongs to the Special Issue Nonlinear and Quantum Optics with Nanostructures)

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Abstract

Electromagnetically induced transparency-like (EIT-like) effect is a promising research area for applications of slow light, sensing and metamaterials. The EIT-like effect is generally formed by the destructive interference of bright-dark mode coupling and bright-bright mode coupling. There are seldom reports about EIT-like effect realized by the coupling of two dark modes. In this paper, we numerically and theoretically demonstrated that the EIT-like effect is achieved through dark-dark mode coupling of two waveguide resonances in a compound nanosystem with metal grating and multilayer structure. If we introduce

| 1 ⟩

,

| 2 ⟩

and

| 3 ⟩

to represent the surface plasmon polaritons (SPPs) resonance, waveguide resonance in layer 2, and waveguide resonance in layer 4, the destructive interference occurs between two pathways of

| 0 ⟩ \to | 1 ⟩ \to | 2 ⟩

and

| 0 ⟩ \to | 1 ⟩ \to | 2 ⟩ \to | 3 ⟩ \to | 2 ⟩

, where

| 0 ⟩

is the ground state without excitation. Our work will stimulate more studies on EIT-like effect with dark-dark mode coupling in other systems.

Keywords: electromagnetically induced transparency; waveguide resonance; surface plasmon polaritons

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MDPI and ACS Style

Wang, Q.; Kuang, K.; Gao, H.; Chu, S.; Yu, L.; Peng, W. Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling. Nanomaterials 2021, 11, 1350. https://doi.org/10.3390/nano11051350

AMA Style

Wang Q, Kuang K, Gao H, Chu S, Yu L, Peng W. Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling. Nanomaterials. 2021; 11(5):1350. https://doi.org/10.3390/nano11051350

Chicago/Turabian Style

Wang, Qiao, Kaili Kuang, Huixuan Gao, Shuwen Chu, Li Yu, and Wei Peng. 2021. "Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling" Nanomaterials 11, no. 5: 1350. https://doi.org/10.3390/nano11051350

APA Style

Wang, Q., Kuang, K., Gao, H., Chu, S., Yu, L., & Peng, W. (2021). Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling. Nanomaterials, 11(5), 1350. https://doi.org/10.3390/nano11051350

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Electromagnetically Induced Transparency-Like Effect by Dark-Dark Mode Coupling

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