https://doi.org/10.1140/epjp/s13360-026-07607-7
Regular Article
Enhancing the intrinsic decoherence dynamics of quantum nonlocality for semiconductor quantum dot qubits: quantum steering, bell nonlocality and entanglement
1
Department of Mathematics, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 11942, Al Kharj, Saudi Arabia
2
Department of Physics, Faculty of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), 11623, Riyadh, Saudi Arabia
3
Physics Department, Faculty of Science, Al-Azhar University, 71524, Assiut, Egypt
a
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Received:
13
October
2025
Accepted:
23
March
2026
Published online:
17
April
2026
Abstract
In this study, we present a theoretical exploration of the intrinsic decoherence dynamics governing quantum correlations in a system of strongly coupled semiconductor quantum dots, supporting advancements in quantum computing and quantum communication. The study focuses on the evolution and interplay of two-qubit entanglement, quantum steering, and Bell non-locality. By systematically varying detuning, tunnel coupling, and dipole-dipole interaction strengths, we analyze their respective impacts on the system’s behavior. Our analysis confirms the fundamental hierarchy 
across all physically relevant parameter spaces, with entanglement exhibiting superior temporal stability compared to the more fragile resources of Bell nonlocality and quantum steering. Specifically, we quantify how detuning affects measurement non-locality values and collapse timescales, revealing that steering undergoes sudden death at characteristically earlier times than entanglement–a vulnerability arising from its intermediate operational character in the correlation hierarchy. Furthermore, we evaluate the resilience of initial maximal non-local correlations under the influence of band energy, dipole-dipole interaction, and intrinsic decoherence. The physical parameters that optimize each class of correlation are identified, and we show that their evolution follows a monotonic dependence on the primary system parameters. This result highlights the significant impact of the quantum tunneling mechanism on the formation and persistence of correlations within quantum dot systems, thereby supporting their potential applications in quantum information processing and computation.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
