Pulsed homodyne detector for continuous variable quantum key distribution

• Main Author: Tan, Dion Kuan Leng
• Other Authors: Liu Ai Qun
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2020
• Subjects: Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/140537
• Institution: Nanyang Technological University

This paper details the research and work done which is utilized to design, develop and implement a pulsed homodyne detector for continuous variable quantum key distribution. Technologies have brought convenience into the lives of many and information and communications technologies (ICT) being one of them. However, privacy and security remain a key worry in this digital world. With the current cryptography techniques, there is not a fully secured method in protecting the data and information during interactions. Quantum technology is an emerging field of physics and engineering. It has been proved to be reliable with years of research and experiment. Quantum communication is a field of quantum technology that researchers are working on to protect data and information that guarantee secure communication with the means of quantum cryptography. A homodyne detector plays a significant role in quantum communication. It is a tool used for signal processing to extract information. This tool must be efficient and reliable in sensitive detection as quantum technology deals with matter on a very small scale. To understand this project, it is required to touch on the fundamentals of quantum principles and homodyne detection. The concepts in the related area and the underlying principles will also be briefly discussed. This report also highlights the project’s progress, tasks completed, results obtained, problems encountered and its future works.