6 May 2024 Engineering of plasmonic electromagnetically induced transparency from double quantum dot-metal nanoparticle structure
Asaad H. Hameed, Amin H. Al-Khursan
Author Affiliations +
Abstract

Due to the limited study, this work engineers the parameters controlling the rate of absorbed energy from a double quantum dot (DQD)-metal nanoparticle (MNP) system at plasmonic electromagnetically induced transparency (PEIT) considering the strong coupling between DQD and MNP. The modeling is of the material property for which the energy states and transition momenta are calculated. The analysis considers the orthogonalized plane wave between the wetting layer (WL)-QD transitions. A huge (105 W) total absorption rate (Qtotal) from the system is attained. This result is higher by four orders and the power applied is less by three orders than that obtained in the literature. Many features are studied. Neglecting the WL, the system spectrum is similar to the left-handed picture of the system with WL. The value of Q depends on the situation of the QD energy states through the variation of the QD size, MNP radius, and distance separating the system. In the DQD-MNP hybrid system, the controlling factor that gives a high Qtotal in the PEIT case is the DQD combination with a weak probe and enough pump, i.e., the DQD structure works as a whole structure, not as two QDs working separately. Such a structure allows for manipulating the flexibility of carriers between DQD states that are not found in other structures. From the results, one can conclude that DQD behavior under the pump, probe, and single tunneling component produces two transparent windows. Adding a second tunneling component creates four transparency windows depending on the values of these applied parameters.

© 2024 Society of Photo-Optical Instrumentation Engineers (SPIE)
Asaad H. Hameed and Amin H. Al-Khursan "Engineering of plasmonic electromagnetically induced transparency from double quantum dot-metal nanoparticle structure," Journal of Nanophotonics 18(2), 026003 (6 May 2024). https://doi.org/10.1117/1.JNP.18.026003
Received: 30 January 2024; Accepted: 18 April 2024; Published: 6 May 2024
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KEYWORDS
Engineering

Quantum plasmonics

Windows

Transparency

Matrices

Quantum systems

Nanoparticles

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