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
