Program design for chip-based quantum key distribution (QKD)

• Main Author: Tan, Jewell Shi Rong
• Other Authors: Jiang Xudong
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2023
• Subjects: Engineering::Electrical and electronic engineering::Control and instrumentation
• Online Access: https://hdl.handle.net/10356/167092
• Institution: Nanyang Technological University

Compared to conventional encryption, quantum cryptography is a more secure method of transferring information. One well-known use of quantum cryptography is quantum key distribution (QKD), which employs a no-cloning theorem to make it difficult to completely replicate an unknowable and unpredictable quantum state. This project aims to develop a LabVIEW graphical user interface that allows for real-time monitoring of the driving voltage and measured voltage, while reducing user inputs. The voltage control system controls the voltage biasing provided by the source measurement unit (SMU) which modulates the intensity of the pulses sent to the Mach-Zehnder Interferometer (MZI) chip. With the final data collected, Python will be used to post process the results for further analysis. At the end of the study, the effectiveness of the LabVIEW program will be demonstrated by controlling the voltage level and speeding up the data collection process.