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Global Quantum Discord and Entanglement in two Coupled Double Quantum Dots AlGaAs/GaAs

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Abstract

This work presents a theoretical study on the behavior of global quantum discord and entanglement in two coupled double quantum dots made of AlGaAs/GaAs as a function of temperature. We use each double quantum dot as a qubit, where the electron can occupy either the right or left dot. The goal of our investigation is to understand the impact of the energy offset of each qubit and the tunneling coupling energy on quantum correlations. Our findings show that the energy offset and tunneling coupling energy significantly affect the variations of entanglement of formation, standard discord, and global quantum discord. Our results provide insights into the interplay between quantum correlations and environmental parameters and have important implications for the development of quantum technologies.

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Authors and Affiliations

  1. ESMaR, Faculty of Sciences, Mohammed V University in Rabat, Rabat, Morocco

    Hicham Ait Mansour & Morad El Baz

  2. LERMA Laboratory, Aerospace Engineering School, International University of Rabat, Rabat, Morocco

    Hicham Ait Mansour & Mustapha Faqir

Authors
  1. Hicham Ait Mansour
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  2. Mustapha Faqir
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  3. Morad El Baz
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Correspondence to Hicham Ait Mansour.

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Ait Mansour, H., Faqir, M. & El Baz, M. Global Quantum Discord and Entanglement in two Coupled Double Quantum Dots AlGaAs/GaAs. Int J Theor Phys 62, 58 (2023). https://doi.org/10.1007/s10773-023-05312-0

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  • DOI: https://doi.org/10.1007/s10773-023-05312-0

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