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Entanglement Engineering in Two-Electron Quantum Dots with Quartic Anharmonic Confinement

SOUMEN DAS

Published May 29, 2026• 0 citations
Publisher

Abstract

Abstract We investigate the influence of quartic anharmonic confinement on spatial entanglement in two-electron quantum dots. By transforming the Hamiltonian into center-of-mass and relative coordinates, we develop a computational framework combining variational methods, Numerov integration, and Monte Carlo evaluation of linear entropy. We demonstrate that anharmonicity reduces the equilibrium inter-electronic separation, leading to enhanced Coulomb correlations and increased entanglement. In the weakly anharmonic regime, the linear entropy exhibits an approximately linear dependence on the anharmonicity parameter. The results are validated through convergence analysis and comparison with known harmonic-limit results. These findings establish anharmonic confinement as a controllable mechanism for tuning entanglement in semiconductor quantum dots, with potential applications in quantum information processing.

DOI
10.21203/rs.3.rs-9617342/v1

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