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The relation between susceptibility and quantum entropy in the ladder-plus-Y double quantum dot system under spontaneously generated coherence

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Abstract

This work examines how the real part (dispersion) and imaginary part (absorption or gain) of susceptibility control the entropy in the ladder-plus-Y double quantum dot structure under spontaneously generated coherence (SGC). The results show that the higher real part of susceptibility is related to the higher SGC factor and the structure transfer between the normal and anomalous dispersion but, in a way, depends on the strength of the probe field. At a very weak probe, the system transfers from the gain case under no SGC to an absorption case with increasing SGC and returns to gain under a complete SGC. High entropy is associated with high SGC. When the probe field grows, the system pinned the gain case, but the gain and dispersion are reduced depending on probe increment, reducing the entropy. In a few words, high entropy is associated with high dispersion and gain resulting from a weak probe.

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Authors and Affiliations

  1. Department of Physics, College of Science, University of Thi-Qar, Nasiriya, Iraq

    Muwaffaq Abdullah & Amin Habbeb Al-Khursan

  2. Nasiriya Nanotechnology Research Laboratory (NNRL), College of Science, University of Thi-Qar, Nasiriya, Iraq

    Muwaffaq Abdullah, Hakeem H. Al-Ameri & Amin Habbeb Al-Khursan

  3. General directorate of Education, Thi-Qar Province, Thi-Qar, Iraq

    Hakeem H. Al-Ameri & Kadhim A. Kadhim

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  1. Muwaffaq Abdullah
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  2. Hakeem H. Al-Ameri
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  3. Kadhim A. Kadhim
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  4. Amin Habbeb Al-Khursan
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Correspondence to Amin Habbeb Al-Khursan.

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Abdullah, M., Al-Ameri, H.H., Kadhim, K.A. et al. The relation between susceptibility and quantum entropy in the ladder-plus-Y double quantum dot system under spontaneously generated coherence. J Opt (2023). https://doi.org/10.1007/s12596-023-01500-7

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  • DOI: https://doi.org/10.1007/s12596-023-01500-7

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