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Quantum Key Distribution in Optical Communication Networks


Affiliations
1 Department of Computer Applications, Abhijit Kadam Institute of Management and Social Sciences, India
2 Department of Bachelor of Computer Application, Ambaba Commerce College, India
3 Department of Information Communication and Technology, Tecnia Institute of Advanced Studies, India
4 Department of Computer Science and Engineering-Data Science, Brainware University, India

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Background: Quantum Key Distribution (QKD( is a promising technology for secure communication, leveraging the principles of quantum mechanics to provide theoretically unbreakable encryption. With the exponential growth in data traffic and the increasing need for secure communication in backbone fiber networks, integrating highbit-rate multiplexing techniques into QKD systems can enhance their efficiency and scalability. Problem: Traditional QKD systems face limitations in terms of data rate and network scalability, particularly in high-capacity optical communication networks. As data demands increase, there is a critical need for methods that can support high-bitrate multiplexing while maintaining the security and performance of QKD. Method: This study proposes a novel QKD approach using highbit-rate multiplexing in backbone fiber networks. The method involves encoding quantum keys using multiple optical channels simultaneously to increase the data throughput of the QKD system. We employ a combination of time-division multiplexing (TDM( and wavelength-division multiplexing (WDM( to optimize the use of fiber resources and enhance key distribution rates. Results: Simulation results demonstrate that the proposed method achieves a key distribution rate of 10 Mbps over a 200 km fiber link with a quantum bit error rate (QBER( of 1.5%. This represents a 50% improvement in key rate compared to conventional QKD systems without multiplexing. Additionally, the method shows enhanced scalability and network utilization, supporting up to 16 multiplexed channels with minimal impact on security.

Keywords

Quantum Key Distribution, High-Bit-Rate Multiplexing, Optical Communication Networks, Time-Division Multiplexing, WavelengthDivision Multiplexing
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  • Quantum Key Distribution in Optical Communication Networks

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Authors

Akabarsaheb Babulal Nadaf
Department of Computer Applications, Abhijit Kadam Institute of Management and Social Sciences, India
Rajeshkumar R Savaliya
Department of Bachelor of Computer Application, Ambaba Commerce College, India
Vinay Kumar Nassa
Department of Information Communication and Technology, Tecnia Institute of Advanced Studies, India
Qaim Mehdi Rizvi
Department of Computer Science and Engineering-Data Science, Brainware University, India

Abstract


Background: Quantum Key Distribution (QKD( is a promising technology for secure communication, leveraging the principles of quantum mechanics to provide theoretically unbreakable encryption. With the exponential growth in data traffic and the increasing need for secure communication in backbone fiber networks, integrating highbit-rate multiplexing techniques into QKD systems can enhance their efficiency and scalability. Problem: Traditional QKD systems face limitations in terms of data rate and network scalability, particularly in high-capacity optical communication networks. As data demands increase, there is a critical need for methods that can support high-bitrate multiplexing while maintaining the security and performance of QKD. Method: This study proposes a novel QKD approach using highbit-rate multiplexing in backbone fiber networks. The method involves encoding quantum keys using multiple optical channels simultaneously to increase the data throughput of the QKD system. We employ a combination of time-division multiplexing (TDM( and wavelength-division multiplexing (WDM( to optimize the use of fiber resources and enhance key distribution rates. Results: Simulation results demonstrate that the proposed method achieves a key distribution rate of 10 Mbps over a 200 km fiber link with a quantum bit error rate (QBER( of 1.5%. This represents a 50% improvement in key rate compared to conventional QKD systems without multiplexing. Additionally, the method shows enhanced scalability and network utilization, supporting up to 16 multiplexed channels with minimal impact on security.

Keywords


Quantum Key Distribution, High-Bit-Rate Multiplexing, Optical Communication Networks, Time-Division Multiplexing, WavelengthDivision Multiplexing