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Quantum Information Processing

Developing quantum networks: some key innovations

Nilesh Sharma, Saravana Vilashini M, Gopala Krishnan, Anagha Gayathri, Ashutosh Kumar Singh, Vaibhav Pratap Singh, Valliamai Ramanathan, Prabha Mandayam, A K Prabhakar

Published Jan 12, 2026• 0 citations
Publisher
DOI
10.1007/s11128-025-05031-x

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Quantum computing has emerged as both a boon and a bane in the realm of network security. This paper delves into the intriguing interplay between quantum computing and the vulnerabilities of Quantum Key Distribution (QKD) protocols, a cornerstone of secure quantum communication. While QKD offers unmatched security through the principles of quantum mechanics, it is not impervious to attacks in the age of rapidly advancing quantum computing. We examine these vulnerabilities, highlighting the challenges of ensuring the long-term security of quantum networks in a post-quantum world. Through a comprehensive exploration of threat models and the practicality of QKD, we uncover potential weaknesses in quantum network security. In particular, we investigate QKD's susceptibility to evolving quantum algorithms, hardware vulnerabilities, and post-processing security concerns. This work aims to provide a roadmap for understanding and addressing these vulnerabilities, ensuring the continued robustness of quantum communication networks, and fostering the development of post-quantum cryptographic solutions. As quantum computing advances, its implications for quantum network security are far-reaching. This study underlines the critical need for research and innovation in securing quantum communication. By unravelling the vulnerabilities within Quantum Key Distribution and exploring post-quantum cryptographic alternatives, this research contributes to the development of more resilient and secure quantum networks, safeguarding sensitive information and communications in an increasingly quantum-enabled world.
Quantum networks are a rapidly evolving technology that utilizes the principles of quantum mechanics to facilitate secure communication, distributed quantum computing, and highly sensitive sensor networks. Quantum networks are constructed using diverse components, such as quantum information sources, quantum memories, quantum repeaters, and quantum detectors. These networks leverage the distinctive features of quantum mechanics, such as superposition and entanglement, to attain superior performance benefits. Despite the numerous challenges that impede the development of quantum networks, such as the requirement for more efficient and dependable components, considerable advancements have been achieved in recent years through the utilization of simulations and experimental platforms. With the growing need for enhanced security and faster computing, the potential for quantum networks appears promising in the future. The potential of these innovations to revolutionize various fields and facilitate novel breakthroughs and discoveries is noteworthy. In this paper, we review the current state of the art in quantum networks, including key concepts and technologies such as quantum key distribution, quantum repeaters, and quantum routing. We also discuss some of the key challenges in quantum networks, including scalability, noise, and interoperability, and highlight some of the key research directions in this field. Finally, we discuss some of the potential applications of quantum networks, including secure communication, quantum computing, and quantum sensing. This paper provides a comprehensive overview of the current status and future directions of quantum networks and will be of interest to researchers, engineers, and policymakers working in this field.