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Dynamic control of spontaneous emission using magnetized InSb higher-order-mode antennas

Aghili, S ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.1088/2515-7647/ad4c34
  3. Publisher: 2024
  4. Abstract:
  5. We exploit InSb’s magnetic-induced optical properties to design THz sub-wavelength antennas that actively tune the radiative decay rates of dipole emitters at their proximity. The proposed designs include a spherical InSb antenna and a cylindrical Si-InSb hybrid antenna demonstrating distinct behaviors. The former dramatically enhances both radiative and non-radiative decay rates in the epsilon-near-zero region due to the dominant contribution of the Zeeman-splitting electric octupole mode. The latter realizes significant radiative decay rate enhancement via magnetic octupole mode, mitigating the quenching process and accelerating the photon production rate. A deep-learning-based optimization of emitter positioning further enhances the quantum efficiency of the proposed hybrid system. These novel mechanisms are promising for tunable THz single-photon sources in integrated quantum networks. © 2024 The Author(s). Published by IOP Publishing Ltd
  6. Keywords:
  7. Active antenna ; III-V semiconductors ; Indium antimonide (InSb) ; Local density of states ; Radiative decay rate ; Antimony compounds ; Hybrid systems ; Indium antimonides ; Indium arsenide ; Narrow band gap semiconductors ; Optical properties ; Particle beams ; Photons ; Silicon compounds ; Active antennas ; Dynamic controls ; III/V semiconductors ; Indium antimonide ; Local density of state ; Multipole moments ; Radiative decay rates ; Zeeman splittings ; Zeeman-splitting effect
  8. Source: JPhys Photonics ; Volume 6, Issue 3 , 2024 ; 25157647 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/2515-7647/ad4c34