Journals Information
Universal Journal of Electrical and Electronic Engineering Vol. 12(1), pp. 1 - 10
DOI: 10.13189/ujeee.2025.120101
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Characterizing Quantum Communication Networks: An Optimal Control Technique Performance Enhancement Investigation
Friday Oodee Philip-Kpae 1,*, Lloyd Endurance Ogbondamati 2, Kingsley Theophilus Igulu 3
1 Department of Electrical/Electronic Engineering, Faculty of Engineering, Rivers State University, Nigeria
2 Department of Electrical/Electronic Engineering, Faculty of Engineering, University of Port Harcourt, Nigeria
3 Department of Computer Science, School of Applied Sciences, Kenule Beeson Saro-Wiwa Polytechnic, Nigeria
ABSTRACT
Quantum key distribution (QKD) relies on the precise control and optimization of quantum states for enhanced secure communication. This study focuses on optimizing quantum state evolution through external control fields while minimizing decoherence and energy consumption. The key challenge addressed in this research is the trade-off between achieving high fidelity in quantum state transitions while reducing the environmental loss impact, which significantly affect QKD performance. The study employs a mathematical framework based on the quantum master equation, incorporating system Hamiltonians, control Hamiltonians, and loss functions to model quantum state evolution. Optimization is achieved using an optimal control functional that balances fidelity and energy consumption. Additionally, key generation rate maximization, quantum error correction strategies, and channel loss modeling are incorporated to enhance QKD efficiency. Numerical simulations evaluate the secure key generation rate, error mitigation, and fidelity of quantum states over time. Results demonstrate that at an initial quantum state value of 0.50, the system undergoes an oscillatory decay, stabilizing near zero at t=10, indicating the impact of decoherence. Secure key generation analysis reveals that with an error rate of 0.1, the key rate is maximized at 0.72, but declines sharply to nearly zero when the error rate exceeds 0.5. Fidelity measurements indicate an exponential decline, starting at 1.0 at T=0T = 0 and reducing to approximately 0.61 at T=50T = 50 and 0.37 at T=100T = 100, reflecting the challenges of maintaining quantum coherence. Error correction strategies successfully mitigate errors, achieving a quantum error correction rate of nearly 99% in optimal conditions. The findings support policies aimed at enhancing quantum communication reliability by emphasizing robust error correction methods, efficient energy management, and adaptive control strategies to counteract decoherence. Future work should explore real-time adaptive optimization frameworks to further enhance QKD performance under varying noise conditions.
KEYWORDS
Quantum, Optimal Control, Energy, Efficiency, Optimization
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Friday Oodee Philip-Kpae , Lloyd Endurance Ogbondamati , Kingsley Theophilus Igulu , "Characterizing Quantum Communication Networks: An Optimal Control Technique Performance Enhancement Investigation," Universal Journal of Electrical and Electronic Engineering, Vol. 12, No. 1, pp. 1 - 10, 2025. DOI: 10.13189/ujeee.2025.120101.
(b). APA Format:
Friday Oodee Philip-Kpae , Lloyd Endurance Ogbondamati , Kingsley Theophilus Igulu (2025). Characterizing Quantum Communication Networks: An Optimal Control Technique Performance Enhancement Investigation. Universal Journal of Electrical and Electronic Engineering, 12(1), 1 - 10. DOI: 10.13189/ujeee.2025.120101.