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Polarization-controlled dynamical switching between transparency and absorption in a Zeeman-spilt Λ-type system.

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Title: Polarization-controlled dynamical switching between transparency and absorption in a Zeeman-spilt Λ-type system.
Authors: Liu, Yang1 (AUTHOR), Yan, Xiang-An1 (AUTHOR) yanxiangan0321@163.com, Yu, Ze-Kai1 (AUTHOR), Lv, Zi-Yang1 (AUTHOR), Song, Jia-Le1 (AUTHOR), Wu, Zi-Yi1 (AUTHOR), Wang, Xin1 (AUTHOR), Han, Xiao-Xiang1 (AUTHOR)
Source: International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics. 7/20/2026, Vol. 40 Issue 18, p1-12. 12p.
Subjects: Zeeman effect, Transparency (Optics), Optical modulation, Light propagation, Quantum interference, Optical polarization
Abstract: We report a simplified all-optical scheme that achieves dynamical switching between electromagnetically induced transparency (EIT) and absorption (EIA) in a Λ -type atomic system using only two lasers. The switch is controlled via the polarization ( σ + ∕ σ − ) and propagation direction of the optical fields. By applying a weak magnetic field, we spectroscopically resolve the degenerate transition into Zeeman-split subsystems and identify an effective N-type pathway as the physical origin of the switching. Theoretical analysis based on dressed-state perturbation theory reveals that the EIT–EIA transition results from constructive quantum interference between secondary dressed states. The scheme also generates tunable dual transparency windows, enabling potential applications in multi-channel signal routing and polarization-controlled slow-light devices. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics is the property of World Scientific Publishing Company 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
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Header DbId: egs
DbLabel: Engineering Source
An: 195445452
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Polarization-controlled dynamical switching between transparency and absorption in a Zeeman-spilt Λ-type system.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Yang%22">Liu, Yang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Xiang-An%22">Yan, Xiang-An</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yanxiangan0321@163.com</i><br /><searchLink fieldCode="AR" term="%22Yu%2C+Ze-Kai%22">Yu, Ze-Kai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lv%2C+Zi-Yang%22">Lv, Zi-Yang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Jia-Le%22">Song, Jia-Le</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Zi-Yi%22">Wu, Zi-Yi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xin%22">Wang, Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Xiao-Xiang%22">Han, Xiao-Xiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Modern+Physics+B%3A+Condensed+Matter+Physics%3B+Statistical+Physics%3B+Applied+Physics%22">International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics</searchLink>. 7/20/2026, Vol. 40 Issue 18, p1-12. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Zeeman+effect%22">Zeeman effect</searchLink><br /><searchLink fieldCode="DE" term="%22Transparency+%28Optics%29%22">Transparency (Optics)</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+modulation%22">Optical modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Light+propagation%22">Light propagation</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+interference%22">Quantum interference</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+polarization%22">Optical polarization</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We report a simplified all-optical scheme that achieves dynamical switching between electromagnetically induced transparency (EIT) and absorption (EIA) in a Λ -type atomic system using only two lasers. The switch is controlled via the polarization ( σ + ∕ σ − ) and propagation direction of the optical fields. By applying a weak magnetic field, we spectroscopically resolve the degenerate transition into Zeeman-split subsystems and identify an effective N-type pathway as the physical origin of the switching. Theoretical analysis based on dressed-state perturbation theory reveals that the EIT–EIA transition results from constructive quantum interference between secondary dressed states. The scheme also generates tunable dual transparency windows, enabling potential applications in multi-channel signal routing and polarization-controlled slow-light devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics is the property of World Scientific Publishing Company 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.)
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RecordInfo BibRecord:
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        Value: 10.1142/S0217979226501742
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      – Code: eng
        Text: English
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        PageCount: 12
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    Subjects:
      – SubjectFull: Zeeman effect
        Type: general
      – SubjectFull: Transparency (Optics)
        Type: general
      – SubjectFull: Optical modulation
        Type: general
      – SubjectFull: Light propagation
        Type: general
      – SubjectFull: Quantum interference
        Type: general
      – SubjectFull: Optical polarization
        Type: general
    Titles:
      – TitleFull: Polarization-controlled dynamical switching between transparency and absorption in a Zeeman-spilt Λ-type system.
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            NameFull: Liu, Yang
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            NameFull: Yan, Xiang-An
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            – D: 20
              M: 07
              Text: 7/20/2026
              Type: published
              Y: 2026
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            – TitleFull: International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics
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