Driven square lattice of quantum dots in a magnetic field coupled to a cylindrical FIR-photon cavity
Abstract
We present a comprehensive computational study of driven quantum dot arrays in a square lattice configuration, subject to an external magnetic field and coupled to a cylindrical far-infrared photon cavity. The driving is introduced through a harmonic modulation of the full electron-photon interaction, therefore including both paramagnetic and diamagnetic contributions. The electron-electron Coulomb interactions are treated within density functional theory, while the electron-photon coupling is modeled using a many-body configuration interaction approach at each iteration of the density functional. By exploiting the unique properties of the cylindrical TE011 cavity mode, we demonstrate selective enhancement of diamagnetic two-photon transitions. Our results reveal that the effectiveness of harmonic modulation of the electron-photon interaction is strongly dependent on both the driving frequency and the electron occupation number per dot. When the driving frequency approaches twice the cavity photon frequency, the system exhibits resonant behavior characterized by efficient photon pumping, occupation of higher-order photon replicas, and activation of collective radial Coulomb breathing modes. These findings establish a controllable mechanism for manipulating photon states in coupled quantum dot-cavity systems and provide insights into the interplay among harmonic modulation, photonic excitations, magnetic confinement, and many-body electron correlations in dimensionally reduced nanostructures.
Versions
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BibTeX
@misc{gudmundsson2026driven,
title = {{Driven square lattice of quantum dots in a magnetic field coupled to a cylindrical FIR-photon cavity}},
author = {Vidar Gudmundsson and Vram Mughnetsyan and Hsi-Sheng Goan and Jeng-Da Chai and Nzar Rauf Abdullah and Chi-Shung Tang and Wen-Hsuan Kuan and Valeriu Moldoveanu and Andrei Manolescu},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2607.06812},
eprint = {2607.06812},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.06812},
}
RIS
TY - UNPB
TI - Driven square lattice of quantum dots in a magnetic field coupled to a cylindrical FIR-photon cavity
AU - Vidar Gudmundsson
AU - Vram Mughnetsyan
AU - Hsi-Sheng Goan
AU - Jeng-Da Chai
AU - Nzar Rauf Abdullah
AU - Chi-Shung Tang
AU - Wen-Hsuan Kuan
AU - Valeriu Moldoveanu
AU - Andrei Manolescu
PY - 2026
DA - 2026/10/23
PB - arXiv
DO - 10.48550/arxiv.2607.06812
UR - https://arxiv.org/abs/2607.06812
AB - We present a comprehensive computational study of driven quantum dot arrays in a square lattice configuration, subject to an external magnetic field and coupled to a cylindrical far-infrared photon cavity. The driving is introduced through a harmonic modulation of the full electron-photon interaction, therefore including both paramagnetic and diamagnetic contributions. The electron-electron Coulomb interactions are treated within density functional theory, while the electron-photon coupling is modeled using a many-body configuration interaction approach at each iteration of the density functional. By exploiting the unique properties of the cylindrical TE_011 cavity mode, we demonstrate selective enhancement of diamagnetic two-photon transitions. Our results reveal that the effectiveness of harmonic modulation of the electron-photon interaction is strongly dependent on both the driving frequency and the electron occupation number per dot. When the driving frequency approaches twice the cavity photon frequency, the system exhibits resonant behavior characterized by efficient photon pumping, occupation of higher-order photon replicas, and activation of collective radial Coulomb breathing modes. These findings establish a controllable mechanism for manipulating photon states in coupled quantum dot-cavity systems and provide insights into the interplay among harmonic modulation, photonic excitations, magnetic confinement, and many-body electron correlations in dimensionally reduced nanostructures.
ER -