View in EDS HTML Full Text PDF Full Text

Electromagnetically Induced Transparency in a GaAs Coupled Quantum Dot-Ring.

Saved in:
Bibliographic Details
Title: Electromagnetically Induced Transparency in a GaAs Coupled Quantum Dot-Ring.
Authors: Hahn, R. V. H.1 (AUTHOR), Giraldo-Neira, A. S.2 (AUTHOR), Vinasco, J. A.3 (AUTHOR), Gil-Corrales, J. A.4 (AUTHOR), Morales, A. L.2 (AUTHOR), Duque, C. A.2 (AUTHOR) carlos.duque1@udea.edu.co
Source: Nanomaterials (2079-4991). Sep2025, Vol. 15 Issue 18, p1455. 21p.
Subjects: Electric fields, Optical properties, Quantum coherence, Effective mass (Physics), Semiconductor quantum dots, Aharonov-Bohm effect, Nanostructures, Finite element method
Abstract: In this work, the ground and low-lying excited states in a GaAs coupled quantum dot-ring embedded in an AlGaAs cylindrical matrix are computed under the assumption of a finite confinement potential and an axisymmetric model by means of the finite element method and the effective mass approximation. The electron energy levels are studied as functions of the intensity of externally applied electric and magnetic fields. Electromagnetically induced transparency in the ladder configuration and linear optical absorption coefficient are calculated thereupon. Our results suggest that magnetic fields are more suitable than electric fields for controlling the optical properties of this nanostructure. Also, we found that the system's response, however, exhibits a striking asymmetry: while the electromagnetically induced transparency is unexpectedly quenched under positive electric fields due to vanishing dipole transition matrix elements, this limitation is completely overcome by a magnetic field. Its application not only restores optical transparency across the full range of electric field values but also drives substantially larger energy level shifts and clear Aharonov–Bohm oscillations, making it a far more robust tool for controlling the optical properties of confined electrons in dot-ring coupled heterostructures. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 188323537
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Electromagnetically Induced Transparency in a GaAs Coupled Quantum Dot-Ring.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Hahn%2C+R%2E+V%2E+H%2E%22">Hahn, R. V. H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Giraldo-Neira%2C+A%2E+S%2E%22">Giraldo-Neira, A. S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vinasco%2C+J%2E+A%2E%22">Vinasco, J. A.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gil-Corrales%2C+J%2E+A%2E%22">Gil-Corrales, J. A.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Morales%2C+A%2E+L%2E%22">Morales, A. L.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duque%2C+C%2E+A%2E%22">Duque, C. A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> carlos.duque1@udea.edu.co</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Sep2025, Vol. 15 Issue 18, p1455. 21p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electric+fields%22">Electric fields</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+properties%22">Optical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+coherence%22">Quantum coherence</searchLink><br /><searchLink fieldCode="DE" term="%22Effective+mass+%28Physics%29%22">Effective mass (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductor+quantum+dots%22">Semiconductor quantum dots</searchLink><br /><searchLink fieldCode="DE" term="%22Aharonov-Bohm+effect%22">Aharonov-Bohm effect</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructures%22">Nanostructures</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this work, the ground and low-lying excited states in a GaAs coupled quantum dot-ring embedded in an AlGaAs cylindrical matrix are computed under the assumption of a finite confinement potential and an axisymmetric model by means of the finite element method and the effective mass approximation. The electron energy levels are studied as functions of the intensity of externally applied electric and magnetic fields. Electromagnetically induced transparency in the ladder configuration and linear optical absorption coefficient are calculated thereupon. Our results suggest that magnetic fields are more suitable than electric fields for controlling the optical properties of this nanostructure. Also, we found that the system's response, however, exhibits a striking asymmetry: while the electromagnetically induced transparency is unexpectedly quenched under positive electric fields due to vanishing dipole transition matrix elements, this limitation is completely overcome by a magnetic field. Its application not only restores optical transparency across the full range of electric field values but also drives substantially larger energy level shifts and clear Aharonov–Bohm oscillations, making it a far more robust tool for controlling the optical properties of confined electrons in dot-ring coupled heterostructures. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=188323537
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/nano15181455
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 21
        StartPage: 1455
    Subjects:
      – SubjectFull: Electric fields
        Type: general
      – SubjectFull: Optical properties
        Type: general
      – SubjectFull: Quantum coherence
        Type: general
      – SubjectFull: Effective mass (Physics)
        Type: general
      – SubjectFull: Semiconductor quantum dots
        Type: general
      – SubjectFull: Aharonov-Bohm effect
        Type: general
      – SubjectFull: Nanostructures
        Type: general
      – SubjectFull: Finite element method
        Type: general
    Titles:
      – TitleFull: Electromagnetically Induced Transparency in a GaAs Coupled Quantum Dot-Ring.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Hahn, R. V. H.
      – PersonEntity:
          Name:
            NameFull: Giraldo-Neira, A. S.
      – PersonEntity:
          Name:
            NameFull: Vinasco, J. A.
      – PersonEntity:
          Name:
            NameFull: Gil-Corrales, J. A.
      – PersonEntity:
          Name:
            NameFull: Morales, A. L.
      – PersonEntity:
          Name:
            NameFull: Duque, C. A.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 20794991
          Numbering:
            – Type: volume
              Value: 15
            – Type: issue
              Value: 18
          Titles:
            – TitleFull: Nanomaterials (2079-4991)
              Type: main
ResultId 1