Design and Simulation of Quantum Repeater for Optical QuantumCommunication System.

Abstract

In an era where secure communication forms the backbone of various technological appli cations, the thesis delves into the intricate realm of quantum communication. The focus is on the development of an advanced optical quantum repeater, designed to enhance the efficiency and reliability of secure communication networks operating over extended distances. This research is motivated by the imperative to address the unique challenges posed by quantum information transmission, such as susceptibility to environmental factors, including noise and losses. The methodology employed in this study is comprehensive, employing a dual approach that combines sophisticated simulations and experimental investigations. These endeavors are undertaken to rigorously evaluate the feasibility, reliability, and scalability of the pro posed quantum repeater. Through an integration of cutting-edge measurement and control techniques, the repeater is meticulously crafted to ensure optimal performance across di verse applications, including secure communication, quantum cryptography, and quantum computing. The study aspires to contribute a practical and reliable solution that extends the se cure communication range of existing networks. By doing so, it seeks to overcome the formidable challenges associated with transmitting quantum information over substantial distances. This research holds particular significance in the broader landscape of quantum communication technologies, as the proposed repeater has the potential to revolutionize how we communicate and process information securely over extended distances. The proposed optical quantum repeater design exhibits superior performance metrics compared to existing designs. It boasts higher efficiency of 0.95, fidelity of 0.99, and a lower gate error rate of 0.0005, indicating its potential for enhanced quantum computations. However, this improvement comes with a trade-off, as the proposed design requires a larger number of qubits, leading to increased resource overhead. Despite this, it offers longer decoherence times and communication distances, highlighting its promising capabilities for future quantum communication systems