Förster Interaction as a Control Mechanism for Quantum Tunneling Current in Coupled Donor-Acceptor Quantum Dots
Abstract
The analytical solution of the system consisting of donor-acceptor double quantum dots of approximately the same size, located inside a high-quality cavity is studied. The double quantum dots interact with the same phonon fields within the cavity, as well as with a single-mode electromagnetic field. The effect of the modified Förster interaction strength coefficient on the atomic occupation probabilities, ρ11(t), ρ22(t), the atomic population inversion ρz(t), the von Neumann entropy, the information entropies H(σx), H(σy) and H(σz), quantum Fisher information (FI ) and quantum coherence (Qc) of this system are investigated. The results clearly show that the modified Förster interaction strength coefficient (Ω) plays a pivotal role in controlling the dynamics of the coupled quantum dot system, where the interaction between quantum dots accelerates energy transfer and information exchange processes within the system. Hence, under the influence of the Förster interaction, which occurs when the donor’s emission spectrum overlaps with the acceptor’s absorption spectrum, a quantum tunneling current is generated between the two quantum dots using photons from negatively charged excitons. Also, the ability to control the degree of entanglement through Ω provides a mechanism to tune the properties of the quantum system.
Keywords
Citation Information
@article{damabokahla2026,
title={Förster Interaction as a Control Mechanism for Quantum Tunneling Current in Coupled Donor-Acceptor Quantum Dots},
author={D. A. M. Abo-Kahla and M. E. Shaheen},
journal={Journal of Computational Electronics},
year={2026},
doi={https://doi.org/10.21203/rs.3.rs-8910531/v1}
}
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